Faculty

Tamer Zaki

Associate Professor

Research Interests

Transitional and turbulent shear flows: linear and non-linear instability waves, secondary instabilities, breakdown to turbulence, direct numerical simulations, transition modelling. Two-fluid shear flows: linear and non-linear instability methods, interface tracking, the interaction of vortical disturbances with interfaces, direct numerical simulations, laminar-to-turbulence transition. Turbulence: boundary layer turbulence, separation, drag reduction, and large-scale high-performance computing.

Tamer Zaki, the 2016 winner of the Office of Naval Research Young Investigator Award, is recognized for his innovative theoretical and engineering solutions to technological and environmental challenges created when turbulence meets momentum, heat, and mass. He is an associate professor in the Department of Mechanical Engineering.

Zaki’s work offers novel applications for hydro and aero-dynamics, turbo-machinery, heat transfer, materials processing, and medical interventions with inhaled drug delivery. His research and the work of his lab, Johns Hopkins’ Flow Science and Engineering (FSE), address a classic, complex mechanics problem: Infinitesimal disturbances can cause organized fluid motion to become chaotic. To capture these detailed flow instabilities that precede the onset of turbulence, Zaki creates high-fidelity, scalable numerical simulations with complementary analytical and semi-analytical techniques. Current research areas include modeling and controlling transition to turbulence, flow manipulation and turbulent drag reduction technologies, and the stability or viscoelastic shear flows.

Zaki is the 2016 and 2017 winner of the Japanese Society for the Promotion of Science visiting fellowship. A life member of the American Physical Society, he is also a member of JHU’s Institute for Data Intensive Engineering and Science and the Center for Environmental and Applied Fluid Mechanics. He is the 2017 recipient of JHU William H. Huggins Excellence in Teaching Award and has garnered several awards at Imperial College London. Zaki co- organized the 2018 Mini-symposium on Complex Flows: Dynamics of Viscoelastic and Inertioelastic flows and the 16th and 17th International Symposia on Transport Phenomena and Dynamics of Rotating Machinery in 2016 and 2017.

Author of numerous journal articles and book chapters, Zaki is a member of the editorial advisory board of Flow, Turbulence & Combustion. He also referees several journals, including the Journal of Fluid Mechanics; Computers and Fluids; Royal Society Philosophical Transactions; Flow, Turbulence and Combustion; Journal of Turbomachinery; and the International Journal of Heat and Fluid Flow.

He received a BSc in Mechanical Engineering from The Pennsylvania State University in 1998 and, from Stanford University, a MSc in Mechanical Engineering (2001), a PhD in Flow Physics and Computational Engineering, and a PhD minor in Mathematics (2005).

 

 

Education
  • Ph.D. 2005, STANFORD UNIVERSITY
Experience
  • 2015 - 2017:  Department of Mechanical Engineering, Graduate Admission Committee, The Johns Hopkins University
  • 2015 - Present:  Visiting Professor, Mechanical Engineering, Imperial College London
  • 2015 - Present:  Other, Board of Review
  • 2013 - 2015:  Reader, Mechanical Engineering, Imperial College London
  • 2010 - 2012:  Senior Lecturer, Mechanical Engineering, Imperial College London
  • 2006 - 2010:  Lecturer, Mechanical Engineering, Imperial College London
Research Areas
  • Boundary layer turbulence
  • Breakdown to turbulence
  • DRAG reduction
  • Direct numerical simulations
  • Interface tracking
  • Laminar-to-turbulence transition
  • Large-scale high-perfomance computing
  • Linear and non-linear instability methods
  • Linear instability waves
  • Non-linear instability waves
  • Second instabilities
  • Seperation
  • TURBULENCE
  • Transitional shear flows
  • Transition modelling
  • Turbulent shear flows
  • Two-fluid shear flows
  • Vortical disturbances with interfaces
Awards
  • 2017:  Japanese Society for the Promotion of Science
  • 2017:  William H. Huggins Excellence in Teaching Award
  • 2016:  Japanese Society for the Promotion of Science
  • 2016:  Office of Naval Research Young Investigator Award
  • 2013:  Department Nominee, Faculty of Engineering Teaching Excellence Award, Imperial College London
  • 2013:  Institute of Industrial Sciences Visiting Fellowship, University of Tokyo
  • 2013:  Japanese Society for the Promotion of Science
  • 2013:  President and Rector’s Award for Excellence in Teaching, Imperial College London
  • 2010:  Department Nominee, Faculty of Engineering Teaching Excellence Award, Imperial College London
  • 2005:  Directors' fellowship, Los Alamos National Laboratory
  • 2005:  Graduate Fellowship, Stanford University
  • 2000:  Abstract of Distinction Award, The American Gastroenterological Association
  • 1999:  Graduate Fellowship Program – Honorable mention
Journal Articles
  • Wang B, Mao X, Zaki TA (2019).  Low-frequency selectivity in flat-plate boundary layer with elliptic leading edge.  Journal of Fluid Mechanics.  866.  239-262.
  • Hameduddin I, Zaki TA (2019).  The mean conformation tensor in viscoelastic turbulence.  Journal of Fluid Mechanics.  865.  363-380.
  • Marxen O, Zaki TA (2019).  Turbulence in intermittent transitional boundary layers and in turbulence spots.  Journal of Fluid Mechanics.  860.  350-383.
  • Wu Z, Lee J, Meneveau C, Zaki T (2019).  Application of a self-organizing map to identify the turbulent-boundary-layer interface in a transitional flow.  Physical Review Fluids.  4(2).
  • Park J, Zaki TA (2019).  Sensitivity of high-speed boundary-layer stability to base-flow distortion.  Journal of Fluid Mechanics.  859.  476-515.
  • Hameduddin I, Gayme DF, Zaki TA (2019).  Perturbative expansions of the conformation tensor in viscoelastic flows.  Journal of Fluid Mechanics.  858.  377-406.
  • Wang B, Mao X, Zaki TA (2019).  Low-frequency selectivity in flat-plate boundary layer with elliptic leading edge.  Journal of Fluid Mechanics.
  • You J, Zaki TA (2019).  Conditional statistics and flow structures in turbulent boundary layers buffeted by free-stream disturbances.  Journal of Fluid Mechanics.  866.  526-566.
  • You J, Zaki TA (2019).  Conditional statistics and flow structures in turbulent boundary layers buffeted by free-stream distur- bances.  Journal of Fluid Mechanics.
  • Hameduddin I, Zaki TA (2019).  The mean conformation tensor in viscoelastic turbulence.  Journal of Fluid Mechanics.
  • Wu Z, Lee J, Meneveau C, Zaki TA (2019).  Application of a self-organizing map to identify the turbulent-boundary-layer interface in a transitional flow.  Physical Review Fluids.
  • Haward SJ, Page J, Zaki TA, Shen AQ (2018).  "phase diagram" for viscoelastic Poiseuille flow over a wavy surface.  Physics of Fluids.  30(11).
  • Lee J, Zaki TA (2018).  Detection algorithm for turbulent interfaces and large-scale structures in intermittent flows.  Computers and Fluids.  175.  142-158.
  • Haward SJ, Page J, Zaki TA, Shen AQ (2018).  Inertioelastic Poiseuille flow over a wavy surface.  Physical Review Fluids.  3(9).
  • Ismail U, Zaki TA, Durbin PA (2018).  The effect of cube-roughened walls on the response of rough-to-smooth (RTS) turbulent channel flows.  International Journal of Heat and Fluid Flow.  72.  174-185.
  • Ismail U, Zaki TA, Durbin PA (2018).  Simulations of rib-roughened rough-to-smooth turbulent channel flows.  Journal of Fluid Mechanics.  843.  419-449.
  • Hameduddin I, Meneveau C, Zaki TA, Gayme DF (2018).  Geometric decomposition of the conformation tensor in viscoelastic turbulence.  Journal of Fluid Mechanics.  842.  395-427.
  • Bose R, Zaki TA, Durbin PA (2018).  Instability waves and transition in adverse-pressure-gradient boundary layers.  Physical Review Fluids.  3(5).
  • Marxen O, Zaki TA (2018).  Turbulence in intermittent transitional boundary layers and in turbulence spots.  Journal of Fluid Mechanics.  350-383.
  • Park J, Zaki TA (2018).  Sensitivity of high-speed boundary-layer stability to base-flow distortion.  Journal of Fluid Mechanics.  476-515.
  • Hameduddin I, Gayme DF, Zaki TA (2018).  Perturbative expansions of the conformation tensor in viscoelastic flows.  Journal of Fluid Mechanics.  377-406.
  • Haward SJ, Shen AQ, Page J, Zaki TA (2017).  Poisseuille flow over a wavy surface.  Physical Review Fluids.  2(12).
  • Mao X, Zaki TA, Sherwin SJ, Blackburn HM (2017).  Transition induced by linear and nonlinear perturbation growth in flow past a compressor blade.  Journal of Fluid Mechanics.  820.  604-632.
  • Lee SJ, Zaki TA (2017).  Simulations of natural transition in viscoelastic channel flow.  Journal of Fluid Mechanics.  820.  232-262.
  • Lee J, Sung HJ, Zaki TA (2017).  Signature of large-scale motions on turbulent/non-turbulent interface in boundary layers.  Journal of Fluid Mechanics.  819.  165-187.
  • Biancofiore L, Brandt L, Zaki TA (2017).  Streak instability in viscoelastic Couette flow.  Physical Review Fluids.  2(4).
  • Rocco G, Zaki TA, Mao X, Blackburn H, Sherwin SJ (2017).  Floquet and transient growth stability analysis of a flow through a compressor passage.  Aerospace Science and Technology.  44.
  • Panagiotou CF, Cerizza D, Zaki TA, Hasegawa Y (2017).  Evaluation of olfactory search algorithms using direct numerical simulation of turbulent scalar transport.  10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017.  2.
  • Ismail U, Zaki TA, Durbin PA (2017).  Turbulence statistics in rib-roughened rough-to-smooth (RTS) channel flows.  10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017.  4.
  • Nicolaou L, Zaki TA (2016).  Characterization of aerosol Stokes number in 90° bends and idealized extrathoracic airways.  Journal of Aerosol Science.  102.  105-127.
  • Cerizza D, Sekiguchi W, Tsukahara T, Zaki TA, Hasegawa Y (2016).  Reconstruction of Scalar Source Intensity Based on Sensor Signal in Turbulent Channel Flow.  Flow, Turbulence and Combustion.  97(4).  1211-1233.
  • Page J, Zaki TA (2016).  Viscoelastic shear flow over a wavy surface.  Journal of Fluid Mechanics.  801.  392-429.
  • Hack MJP, Zaki TA (2016).  Data-enabled prediction of streak breakdown in pressure-gradient boundary layers.  Journal of Fluid Mechanics.  801.  43-64.
  • Trevelyan DJ, Zaki TA (2016).  Wavy Taylor vortices in molecular dynamics simulation of cylindrical Couette flow.  Physical Review E.  93(4).
  • Hwang J, Lee J, Sung HJ, Zaki TA (2016).  Inner-outer interactions of large-scale structures in turbulent channel flow.  Journal of Fluid Mechanics.  790.  128-157.
  • Saha S, Page J, Zaki TA (2016).  Disturbance amplification in boundary layers over thin wall films.  Physics of Fluids.  28(2).
  • Lee J, Jelly TO, Zaki TA (2015).  Effect of Reynolds Number on Turbulent Drag Reduction by Superhydrophobic Surface Textures.  Flow, Turbulence and Combustion.  95(2-3).  277-300.
  • Hack MJP, Zaki TA (2015).  Modal and non-modal stability of boundary layers forced by spanwise wall oscillations.  Journal of Fluid Mechanics.  778.  389-427.
  • Page J, Zaki T (2015).  The dynamics of spanwise vorticity perturbations in homogeneous viscoelastic shear flow.  Journal of Fluid Mechanics.  777.  327-363.
  • Jung SY, Zaki TA (2015).  The effect of a low-viscosity near-wall film on bypass transition in boundary layers.  Journal of Fluid Mechanics.  772.  330-360.
  • Smith ER, Heyes DM, Dini D, Zaki TA (2015).  A localized momentum constraint for non-equilibrium molecular dynamics simulations.  Journal of Chemical Physics.  142(7).
  • Marxen O, Kotapati RB, Mittal R, Zaki T (2015).  Stability analysis of separated flows subject to control by zero-net-mass-flux jet.  Physics of Fluids.  27(2).
  • Ray PK, Zaki TA (2015).  Absolute/convective instability of planar viscoelastic jets.  Physics of Fluids.  27(1).
  • Hack MJP, Zaki TA (2015).  Bypass Transition in Three-dimensional Time-dependent Boundary Layers.  Procedia IUTAM.  14.  274-281.
  • Hwang J, Lee J, Sung HJ, Zaki TA (2015).  Near-wall features of very large-scale motions in a turbulent channel flow.  9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015.  3.
  • Agarwal A, Brandt L, Zaki TA (2015).  Transition to Turbulence in Viscoelastic Channel Flow.  Procedia IUTAM.  14.  519-526.
  • Nicolaou L, Jung SY, Zaki TA (2015).  A robust direct-forcing immersed boundary method with enhanced stability for moving body problems in curvilinear coordinates.  Computers and Fluids.  119.  101-114.
  • Agarwal A, Brandt L, Zaki TA (2014).  Linear and nonlinear evolution of a localized disturbance in polymeric channel flow.  Journal of Fluid Mechanics.  760.  278-303.
  • Jelly TO, Jung SY, Zaki TA (2014).  Turbulence and skin friction modification in channel flow with streamwise-aligned superhydrophobic surface texture.  Physics of Fluids.  26(9).
  • Page J, Zaki TA (2014).  Streak evolution in viscoelastic Couette flow.  Journal of Fluid Mechanics.  742.  520-521.
  • Ray PK, Zaki TA (2014).  Absolute instability in viscoelastic mixing layers.  Physics of Fluids.  26(1).
  • Heyes DM, Smith ER, Dini D, Zaki TA (2014).  The method of planes pressure tensor for a spherical subvolume.  Journal of Chemical Physics.  140(5).
  • Wissink JG, Zaki TA, Rodi W, Durbin PA (2014).  The effect of wake turbulence intensity on transition in a compressor cascade.  Flow, Turbulence and Combustion.  93(4).  555-576.
  • Hack MJP, Zaki TA (2014).  Streak instabilities in boundary layers beneath free-stream turbulence.  Journal of Fluid Mechanics.  741.  280-315.
  • Hack MJP, Zaki TA (2014).  The influence of harmonic wall motion on transitional boundary layers.  Journal of Fluid Mechanics.  760.  63-94.
  • Hack MJP, Zaki TA (2014).  Localized streak instabilities in pressure gradient boundary layers.  AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference.
  • Lee J, Jung SY, Sung HJ, Zaki TA (2014).  Turbulent thermal boundary layers with temperature-dependent viscosity.  International Journal of Heat and Fluid Flow.  49(C).  43-52.
  • Cheung LC, Zaki TA (2014).  An exact representation of the nonlinear triad interaction terms in spectral space.  Journal of Fluid Mechanics.  748.  175-188.
  • Zhang M, Lashgari I, Zaki TA, Brandt L (2013).  Linear stability analysis of channel flow of viscoelastic Oldroyd-B and FENE-P fluids.  Journal of Fluid Mechanics.  737.  249-279.
  • Nolan KP, Zaki TA (2013).  Conditional sampling of transitional boundary layers in pressure gradients.  Journal of Fluid Mechanics.  728.  306-339.
  • Lee J, Yoon Jung S, Jin Sung H, Zaki TA (2013).  Effect of wall heating on turbulent boundary layers with temperature-dependent viscosity.  Journal of Fluid Mechanics.  726.  196-225.
  • Nicolaou L, Zaki TA (2013).  Direct numerical simulations of flow in realistic mouth-throat geometries.  Journal of Aerosol Science.  57.  71-87.
  • Zaki TA (2013).  From streaks to spots and on to turbulence: Exploring the dynamics of boundary layer transition.  Flow, Turbulence and Combustion.  91(3).  451-473.
  • Lee J, Jung SY, Sung HJ, Zaki TA (2013).  Turbulence and scalar transport in heated boundary layers with viscosity stratification.  International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013.  1.
  • Rehill B, Walsh EJ, Brandt L, Schlatter P, Zaki TA, McEligot DM (2012).  Identifying Turbulent Spots in Transitional Boundary Layers.  Journal of Turbomachinery.  135(1).
  • Smith ER, Heyes DM, Dini D, Zaki TA (2012).  Control-volume representation of molecular dynamics.  Physical Review E - Statistical, Nonlinear, and Soft Matter Physics.  85(5).
  • Heyes DM, Smith ER, Dini D, Spikes HA, Zaki TA (2012).  Pressure dependence of confined liquid behavior subjected to boundary-driven shear.  Journal of Chemical Physics.  136(13).
  • Hack MJP, Zaki TA (2012).  The continuous spectrum of time-harmonic shear layers.  Physics of Fluids.  24(3).
  • Lardeau S, Leschziner M, Zaki T (2012).  Large Eddy Simulation of transitional separated flow over a flat plate and a compressor blade.  Flow, Turbulence and Combustion.  88(1-2).  19-44.
  • Zhang Y, Zaki TA, Sherwin SJ, Wu X (2011).  Nonlinear response of a laminar boundary layer to isotropic and spanwise localized free-stream turbulence.  6th AIAA Theoretical Fluid Mechanics Conference.
  • Rehill B, Walsh EJ, Schlatter P, Brandt L, Zaki TA, McEligot DM (2011).  Identifying turbulent spots in transitional boundary layers.  Proceedings of the ASME Turbo Expo.  5(PARTS A AND B).  1859-1868.
  • Náraigh LO, Spelt PDM, Zaki TA (2011).  Turbulent flow over a liquid layer revisited: Multi-equation turbulence modelling.  Journal of Fluid Mechanics.  683.  357-394.
  • Schrader LU, Brandt L, Zaki TA (2011).  Receptivity, instability and breakdown of Görtler flow.  Journal of Fluid Mechanics.  682.  362-396.
  • Ó Náraigh L, Spelt PDM, Matar OK, Zaki TA (2011).  Interfacial instability in turbulent flow over a liquid film in a channel.  International Journal of Multiphase Flow.  37(7).  812-830.
  • Vaughan NJ, Zaki TA (2011).  Stability of zero-pressure-gradient boundary layer distorted by unsteady Klebanoff streaks.  Journal of Fluid Mechanics.  681.  116-153.
  • Jones BL, Kerrigan EC, Morrison JF, Zaki TA (2011).  Flow estimation of boundary layers using DNS-based wall shear information.  International Journal of Control.  84(8).  1310-1325.
  • Cheung LC, Zaki TA (2011).  A nonlinear PSE method for two-fluid shear flows with complex interfacial topology.  Journal of Computational Physics.  230(17).  6756-6777.
  • Heyes DM, Smith ER, Dini D, Zaki TA (2011).  The equivalence between volume averaging and method of planes definitions of the pressure tensor at a plane.  Journal of Chemical Physics.  135(2).
  • Jones BL, Kerrigan EC, Morrison JF, Zaki TA (2011).  Flow estimation of boundary layers using wall shear information.  IFAC Proceedings Volumes (IFAC-PapersOnline).  44(1 PART 1).  13813-13818.
  • Zaki TA, Wissink JG, Rodi W, Durbin PA (2010).  Direct numerical simulations of transition in a compressor cascade: The influence of free-stream turbulence.  Journal of Fluid Mechanics.  665.  57-98.
  • Zaki TA, Liu Y, Durbin PA (2010).  Boundary layer transition by interaction of streaks and Tollmien-Schlichting waves.  IUTAM Bookseries.  18.  439-444.
  • Naguib AM, Morrison JF, Zaki TA (2010).  On the relationship between the wall-shear-stress and transient-growth disturbances in a laminar boundary layer.  Physics of Fluids.  22(5).  1-13.
  • Cheung LC, Zaki TA (2010).  Linear and nonlinear instability waves in spatially developing two-phase mixing layers.  Physics of Fluids.  22(5).  1-21.
  • Zaki TA, Durbin PA, Wissink J, Rodi W (2009).  DNS of transition to turbulence in a linear compressor cascade.  High Performance Computing in Science and Engineering, Garching/Munich 2007 - Transactions of the 3rd Joint HLRB and KONWIHR Status and Result Workshop.  431-440.
  • Zaki TA, Wissink JG, Durbin PA, Rodi W (2009).  Direct computations of boundary layers distorted by migrating wakes in a linear compressor cascade.  Flow, Turbulence and Combustion.  83(3).  307-322.
  • Zaki TA, Saha S (2009).  On shear sheltering and the structure of vortical modes in single- and two-fluid boundary layers.  Journal of Fluid Mechanics.  626.  111-147.
  • Durbin PA, Zaki TA, Liu Y (2009).  Interaction of discrete and continuous boundary layer modes to cause transition.  International Journal of Heat and Fluid Flow.  30(3).  403-410.
  • Náraigh LO, Matar OK, Spelt PDM, Zaki TA (2008).  Interfacial stability in turbulent pressure-driven channel flow.  AIChE Annual Meeting, Conference Proceedings.
  • Liu Y, Zaki TA, Durbin PA (2008).  Floquet analysis of secondary instability of boundary layers distorted by Klebanoff streaks and Tollmien-Schlichting waves.  Physics of Fluids.  20(12).
  • Liu Y, Zaki TA, Durbin PA (2008).  Boundary-layer transition by interaction of discrete and continuous modes.  Journal of Fluid Mechanics.  604.  199-233.
  • Zaki T, Durbin P, Wissink J, Rodi W (2006).  Direct numerical simulation of by-pass and separation-induced transition in a linear compressor cascade.  Proceedings of the ASME Turbo Expo.  6 PART B.  1421-1429.
  • Zaki TA, Durbin PA (2006).  Continuous mode transition and the effects of pressure gradient.  Journal of Fluid Mechanics.  563.  357-388.
  • Ghosh SK, Kahrilas PJ, Zaki T, Pandolfino JE, Joehl RJ, Brasseur JG (2005).  The mechanical basis of impaired esophageal emptying postfundoplication.  American Journal of Physiology - Gastrointestinal and Liver Physiology.  289(1 52-1).
  • Zaki TA, Durbin PA (2005).  Mode interaction and the bypass route to transition.  Journal of Fluid Mechanics.  531.  85-111.
  • Zaki T, Kahrilas PJ, Ghosh SK, Tatum RP, Joehl RJ, Brasseur JG (2000).  Mechanical consequences of tightness and length of wrap in fundoplication.  Gastroenterology.  118(4, Part 1).  A478-A479.
Book Chapters
  • Zaki TA, Page J (2016).  Theory and simulations of bypass transition in two-fluid boundary layers.  Theme Issue on Transition Modelling.  ERCOFTAC.  (106).
  • Zaki TA, Durbin PA, Wissink J, Rodi W (2009).  DNS of Transition to Turbulence in a Linear Compressor Cascade.  431-440.
  • Durbin PA, Zaki TA (2005).  Continuous Mode Transition.  Transition And Turbulence Control.  87-106.
Conference Proceedings
  • Wu Z, Lee J, Meneveau C, Zaki TA (2019).  Identifying the turbulent-boundary-layer interface in a transitional flow using a self-organizing map.  11th International Symposium on Turbulence Shear Flow Phenomena - TSFP11.
  • Wang M, Zaki TA (2018).  State estimation in transitional and turbulent cylindrical-Couette flow.  71ST ANNUAL MEETING OF THE APS DIVISION OF FLUID DYNAMICS.
  • Wang Q, Zaki TA (2018).  Fundamental limitations in initial-state estimation using surface measurements in wall turbulence.  71ST ANNUAL MEETING OF THE APS DIVISION OF FLUID DYNAMICS.
  • Jahanbankhshi R, Zaki TA (2018).  Earliest transition Reynolds number in hypersonic boundary layers.  71ST ANNUAL MEETING OF THE APS DIVISION OF FLUID DYNAMICS.
  • Wu Z, Meneveau C, Lee J, Zaki TA (2018).  Identifying the turbulent-boundary-layer interface in a transitional flow using a self-organizing map.  71ST ANNUAL MEETING OF THE APS DIVISION OF FLUID DYNAMICS.
  • Haward S, Page J, Zaki TA, Shen A (2018).  Experimental investigation of viscoelastic effects in wavy-microchannel flow.  71ST ANNUAL MEETING OF THE APS DIVISION OF FLUID DYNAMICS.
  • You J, Zaki TA (2018).  The influence of free-stream perturbations on turbulent boundary layers.  12th International Symposium on Engineering Turbulence Modelling and Measurement.
  • Wu Z, Ravoorib R, Zaki TA, Burns R, Meneveau C (2018).  A File-Based Storage Approach to a Public Turbulence Database System and Applications to a Transitional Developing Boundary Layer Dataset.  The 13th World Congress in Computational Mechanics.
  • Haward S, Page J, Zaki TA, Shen A (2018).  Viscoelastic Poiseuille flow through wavy-wall microchannels.  The Annual European Rheology Conference.
  • Lee J, Zaki TA (2017).  V0083: Coherent energetic structures in turbulent boundary layers.  70TH ANNUAL MEETING OF THE APS DIVISION OF FLUID DYNAMICS.
  • Ismail U, Zaki TA, Durbin PA (2017).  Turbulence statistics in rib-roughened rough-to-smooth (RTS) channel flows.  10th International Symposium on Turbulence and Shear Flow Phenomena.
  • Panagiotou C, Cerizza D, Zaki TA, Hasegawa Y (2017).  Evaluation Of Olfactory Search Algorithms Through Direct Numerical Simulation Of Turbulent Scalar Transfer.  10th International Symposium on Turbulence and Shear Flow Phenomena.
  • Mao X, Zaki T, Sherwin SJ, Blackburn H (2016).  Bypass transition induced by free-stream noise in flow past a blade cascade.  16th International Symposium of Transport Phenomena and Dynamics of Rotating Machinery.
  • Biancofiore L, Brandt L, Zaki TA (2016).  Streak instability in viscoelastic Couette flow.  11th Euopean Fluid Mechanics Conference.
  • Cerizza D, Zaki TA, Hasegawa Y (2016).  Effects of velocity and measurement uncertainties on estimation of scalar source intensity in turbulent channel flow.  First Pacific Rim Thermal Engineering Conference.
  • Zaki TA (2015).  V0056: A computational laboratory for the study of transitional and turbulent boundary layers.  68TH ANNUAL MEETING OF THE APS DIVISION OF FLUID DYNAMICS.
  • Hwang J, Lee J, Sung HJ, Zaki TA (2015).  Near-wall features of very large-scale motions in a turbulent channel flow.  9th International Symposium on Turbulence Shear Flow Phenomena - TSFP9.
  • Nicolaou L, Zaki T (2015).  On the Stokes number and characterization of aerosol deposition in the respiratory airways.  4th International Conference on Computational & Mathematical Biomedical Engineering.
  • Hwang J, Lee J, Sung HJ, Zaki TA (2015).  Evolution of large-scale motions in wall-bounded turbulence.  Proceedings of the ASME-JSME-KSME Joint Fluids Engineering Conference.
  • Hack P, Zaki TA (2014).  Localized Streak Instabilities in Pressure Gradient Boundary Layers.  7th AIAA Theoretical Fluid Mechanics Conference.  American Institute of Aeronautics and Astronautics (AIAA).
  • Hack MJ, Zaki TA (2014).  Localized Instabilities of Boundary Layer Streaks in Zero and Adverse Pressure Gradients.  7th AIAA Theoretical Fluid Fluid Mechanics Conference.
  • Agarwal A, Brandt L, Zaki TA (2014).  Bypass breakdown to turbulence in viscoelastic channel flow.
  • Jelly TO, Jung SY, Zaki T (2014).  On the drag-reducing capacity of superhydrophobic surfaces.  10th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements.
  • Hack MJ, Zaki TA (2014).  Nonmodal and modal growth in boundary layers subject to wall oscillation.
  • Nicolaou L, Zaki T (2013).  An immersed boundary method for patient-specific modelling of flow and aerosol deposition in the respiratory airways.  3rd International Conference on Computational & Mathematical Biomedical Engineering.
  • Lee J, Jung SY, Sung HJ, Zaki TA (2013).  Structure of turbulent boundary layer with viscosity stratification.  8th International Symposium on Turbulence Shear Flow Phenomena - TSFP8.
  • Nicolaou L, Zaki T (2012).  Prediction of flow and aerosol deposition in the extrathoracic airways using an implicit immersed boundary method.  9th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements.
  • Zhang Y, Zaki TA, Sherwin SJ, Wu X (2012).  Nonlinear response of a laminar boundary layer to isotropic and spanwise localized free-stream turbulence.  6th AIAA Theoretical Fluid Mechanics Conference.
  • Kerrigan EC, Morrison JF, Zaki TA (2011).  Flow Estimation of Boundary Layers Using Wall-Shear Measurements.  18th World Congress of the International Federation of Automatic Control.
  • Lardeau S, Zaki T (2010).  Large-eddy simulation of transitional flow in a compressor cascade.  8th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements.
  • Vaughan NJ, Zaki T (2010).  The effect of unsteady streaks on boundary layer stability.  8th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements.
  • Cheung LC, Zaki TA (2010).  Development of spatial instability waves in laminar two-phase mixing layers.  7th International Conference on Multiphase Flow.
  • Saha S, Jung SY, Zaki TA (2010).  Stabilization of wall shear beneath vortical disturbances using a thin film.  7th International Conference on Multiphase Flow.
  • Rehill B, Walsh EJ, Brandt L, Schlatter P, Zaki TA (2010).  Identifying turbulent spots in a transitional boundary layer.  ASME TurboExpo.
  • Zaki TA, Liu Y, Durbin PA (2010).  Boundary layer transition by interaction of streaks and Tollmien-Schlichting waves.  439-444.
  • Heyes DM, Zaki TA, Dini D (2009).  Non-equilibrium Molecular Dynamics Simulations of Shear Characteristics in Dry and Lubricated Contacts.  World Tribology Congress.
  • Lardeau S, Zaki TA (2009).  Assessment of Large-Eddy Simulation for accurate prediction of transitional flow in a compressor cascade.  15th International Conference on Finite Elements in Flow Problems.
  • Zaki T, Wissink JG, Durbin PA, Rodi W (2008).  DNS of wake-boundary layer interactions in a linear compressor.  7th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements.
  • Durbin PA, Liu Y, Zaki T (2008).  Boundary layer transition by discrete and continuous modes.  7th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements.
  • Wissink JG, Zaki TA, Durbin PA, Rodi W (2008).  Direct Numerical Simulations of Flow in a Low-Pressure Compressor Cascade with Incoming Wakes (Invited).  8th World Congress on Computational Mechanics.
  • Naraigh LO, Matar OK, Spelt PD, Zaki T (2008).  Interfacial stability in turbulent pressure-driven channel flow.  AIChE100 Annual Meeting, Conference Proceedings.
  • Durbin PA, Zaki T (2007).  Simulation of transition on a compressor blade.  9th US National Congress on Computational Mechanics.
  • Zaki TA, Durbin PA, Wissink JG, Rodi W (2006).  Direct numerical simulation of by-pass and separation-induced transition in a linear compressor cascade.  ASME TurboExpo.  1421-1429.
  • Zaki T, Durbin PA, Wissink JG, Rodi W (2006).  DNS of transition in a linear compressor cascade.  Minnowbrook V: Workshop on Unsteady Flows in Turbomachinery (NASA/CP-2006-214484).
  • Durbin PA, Medic G, Zaki T (2003).  Bypass Transition Via Continuous Modes and Unsteady Effects on Film Cooling.  Minnowbrook IV: Workshop on Transition and Unsteady Aspects of Turbomachinery Flows (NASA/TM-2004-212913).
  • Lee J, Zaki T  Video: A computational laboratory for the study of transitional and turbulent boundary layers.  68th Annual Meeting of the APS Division of Fluid Dynamics - Gallery of Fluid Motion.  American Physical Society (APS).
  • "The dynamics of vorticity and polymer torque in viscoelastic shear flows", Fluid flows, from Graphene to planet atmospheres.  Israel.  December 17, 2018
  • "Precursors of Wall Turbulence".  Lubbock Texas, United States of America (the).  November 1, 2018
  • "Harbingers of Turbulence in Boundary Layers".  Philadelphia Pennsylvania, United States of America (the).  October 1, 2018
  • "Nonlocal vorticity amplification in viscoelastic Couette flow over wavy surfaces", Elastic Turbulence.  Princeton New Jersey, United States of America (the).  September 1, 2018
  • "Dynamical and structural modifications of boundary layers by free-stream turbulence", Control of Turbulent Friction Drag, Beihang University,.  Beijing, China.  September 1, 2018
  • "Natural transition and turbulence in viscoelastic channel flow", Dynamics of Viscoelastic and Inertioelastic flows.  Onna, Japan.  January 20, 2018
  • "A Big-Data Computational Laboratory for the Optimization of Olfactory Search Algorithms in Turbulent Environments", Japan Science & Tech Agency and National Science Foundation (JST-NSF) Big Data Joint Workshop.  Tokyo, Japan.  December 20, 2017
  • "Sensitivity of boundary-layer stability to base-state distortions at high Mach numbers", 70th Annual Meeting of the APS Division of Fluid Dynamics.  Denver Colorado, United States of America (the).  November 21, 2017
  • "Discrete adjoint of fractional step Navier-Stokes solver in generalized coordinates", 70th Annual Meeting of the APS Division of Fluid Dynamics.  Denver Colorado, United States of America (the).  November 21, 2017
  • "Ensemble-based data assimilation and optimal sensor placement for scalar source reconstruction", 70th Annual Meeting of the APS Division of Fluid Dynamics.  Denver Colorado, United States of America (the).  November 20, 2017
  • "Particle sedimentation and impaction in the respiratory airways", 70th Annual Meeting of the APS Division of Fluid Dynamics.  Denver Colorado, United States of America (the).  November 20, 2017
  • "Quantifying polymer deformation in viscoelastic turbulence: the geometric decomposition and a Riemannian approach to scalar measures", 70th Annual Meeting of the APS Division of Fluid Dynamics.  Denver California, United States of America (the).  November 19, 2017
  • "Inception of Klebanoff streaks and large-scale motions in transitional and fully turbulent boundary layers", 70th Annual Meeting of the APS Division of Fluid Dynamics.  Denver Colorado, United States of America (the).  November 19, 2017
  • "Direct numerical simulations of turbulent boundary layers beneath free-stream vortical forcing", 70th Annual Meeting of the APS Division of Fluid Dynamics.  Denver Colorado, United States of America (the).  November 19, 2017
  • "A new approach to characterising the conformation tensor in viscoelastic turbulence", The Society of Rheology 89th Annual Meeting.  Denver Colorado, United States of America (the).  October 9, 2017
  • "Theoretical and data-enabled predictions of boundary-layer transition", 61st Workshop on Investigation and Control of Transition to Turbulence.  Tokyo, Japan.  September 22, 2017
  • "Signature of large-scale motions on turbulent/non-turbulent interface in boundary layers", Invited Lecture.  Osaka, Japan.  June 27, 2017
  • "Large-scale structures in transitional and turbulent boundary layers", Invited Lecture.  Kyoto, Japan.  June 26, 2017
  • "Large-scale motion in wall-bounded turbulence", Invited Lecture.  Okinawa, Japan.  June 23, 2017
  • "Modulation of the turbulent/non-turbulent interface by energetic turbulence structures", Invited Lecture.  Tokyo, Japan.  June 9, 2017
  • "Interfaces in transitional and turbulent boundary layers", Invited Lecture.  Tokyo, Japan.  May 16, 2017
  • "Transition to turbulence in boundary layers buffeted by free-stream disturbances", Invited Lecture.  Austin Texas, United States of America (the).  January 1, 2017
  • "Adjoint-optimization algorithm for spatial reconstruction of a scalar source, Abstract: L7.00008 in Session L7: Flow Control: Feedback, System and Model Identification", 69th Annual Meeting of the APS Division of Fluid Dynamics.  Portland, OR.  November 21, 2016
  • "Nonlinear equilibrium states in viscoelastic Taylor-Couette flow", 69th Annual Meeting of the APS Division of Fluid Dynamics.  Portland, OR.  November 1, 2016
  • "Laminar flow separation subject to control by zero-net-mass-flux jet", 69th Annual Meeting of the APS Division of Fluid Dynamics.  Portland, OR.  November 1, 2016
  • "Non-local vorticity generation by surface roughness in viscoelastic shear flows", 24th ICTAM Conference.  Montreal, Canada.  August 1, 2016
  • "Nonlinear optimal streaks induced by free-stream disturbances in flow over a thin flat plate", 24th ICTAM Conference.  Montreal, Canada.  August 1, 2016
  • "Characterization and prediction of streak breakdown in bypass transition using machine learning", 24th ICTAM Conference.  Montreal, Canada.  August 1, 2016
  • "Turbulent/non-turbulent interface in transitional and turbulent boundary layers", 24th ICTAM Conference.  Montreal, Canada.  August 1, 2016
  • "High-fidelity simulations and predictive theory of boundary-layer transition", CSME International Congress.  Kelowna, Canada.  June 1, 2016
  • "Vorticity wave propagation and reverse-Orr amplification in polymeric shear flows".  Nagoya University, Japan.  May 1, 2016
  • "Boundary layer transition beneath free-stream turbulence: Linear precursors of nonlinear breakdown".  Okinawa Institute of Technology, Japan.  May 1, 2016
  • "Primary and secondary instabilities of transitional boundary layers beneath free-stream turbulence".  Nagoya Institute of Technology, Japan.  May 1, 2016
  • "Deposition characteristics in particle-laden turbulent flows", 9th International Conference on Multiphase Flow.  Firenze, Italy.  May 1, 2016
  • "Linear analysis and nonlinear simulations of boundary-layer transition".  University of Texas at Dallas.  March 1, 2016
  • "Splitting vortices and re-energizing streaks: The dynamics of vortical disturbances in viscoelastic shear flows".  Stanford University, CA.  February 1, 2016
  • "A Big-Data Computational Laboratory for the Optimization of Olfactory Search Algorithms in Turbulent Environments", Big Data Joint Workshop.  Tokyo, Japan.  January 1, 2016
  • "Scaling of energy amplification in the weak and strong elastic limits of viscoelastic shear flows", The American Physical Society DFD Meeting.  Boston, USA.  November 1, 2015
  • "Characteristics of the laminar-turbulent edge in transitional boundary layers", The American Physical Society DFD Meeting.  Boston, USA.  November 1, 2015
  • "Competing disturbance amplification mechanisms in two-fluid boundary layers", The American Physical Society DFD Meeting.  Boston, USA.  November 1, 2015
  • "Scaling of energy amplification in the weak and strong elastic limits of viscoelastic shear flows", The American Physical Society DFD Meeting.  Boston, USA.  November 1, 2015
  • "Phase diagram of vorticity response to surface waviness in viscoelastic Couette flow", The American Physical Society DFD Meeting.  Boston, USA.  November 1, 2015
  • "Natural transition to turbulence in polymeric channel flow", The American Physical Society DFD Meeting.  Boston, USA.  November 1, 2015
  • "Characteristics of turbulent spots in transitional boundary layers", The American Physical Society DFD Meeting.  Boston, USA.  November 1, 2015
  • "Aerosol transport and deposition efficiency in the respiratory airways", The American Physical Society DFD Meeting.  Boston, USA.  November 1, 2015
  • "Aerosol transport and deposition efficiency in the respiratory airways", The 8th GRACM International Congress on Computational Mechanics.  Greece.  July 1, 2015
  • "Deformation of the turbulent/non-turbulent interface by large-scale motions in boundary layers", The American Physical Society DFD Meeting.  San Francisco, USA.  November 1, 2014
  • "A tractable representation of the non-linear terms in spectral space applied to isotropic turbulence", The American Physical Society DFD Meeting.  San Francisco, USA.  November 1, 2014
  • "An immersed-boundary framework for patient-specific optimization of inhaled drug delivery", The American Physical Society DFD Meeting.  San Francisco, USA.  November 1, 2014
  • "An inverse-Orr mechanism for spanwise vorticity amplification in viscoelastic fluids", The American Physical Society DFD Meeting.  San Francisco, USA.  November 1, 2014
  • "The impact of superhydrophobic surface texture on channel-flow turbulence and drag", The American Physical Society DFD Meeting.  San Francisco, USA.  November 1, 2014
  • "Stability of viscoelastic wakes", The American Physical Society DFD Meeting.  San Francisco, USA.  November 1, 2014
  • "Time-evolution of very large-scale motions in a turbulent channel flow", The American Physical Society DFD Meeting.  San Francisco, USA.  November 1, 2014
  • "Boundary layer transition beneath free-stream turbulence: Linear precursors of nonlinear breakdown".  University of Maryland.  January 1, 2014
  • "Bypass transition in three-dimensional time-dependent boundary layers", IUTAM-ABCM Symposium on Laminar-Turbulent Transition.  Brazil.  January 1, 2014
  • "Prediction and control of breakdown to turbulence in wall-bounded shear flows".  University of Cincinnati.  January 1, 2014
  • "Bypass breakdown to turbulence in viscoelastic channel flow", IUTAM-ABCM Symposium on Laminar-Turbulent Transition.  Brazil.  January 1, 2014
  • "Predictive theory for inner and outer instabilities of Klebanoff distortions".  Michigan State University.  January 1, 2014
  • "Localized instabilities of boundary-layer streaks in zero and adverse pressure gradients", AIAA Aviation and Aeronautics Forum and Exposition.  January 1, 2014
  • "On the drag-reducing capacity of superhydrophobic surfaces", 10th International Symposium on Engineering Turbulence Modelling and Measurements.  January 1, 2014
  • "An In Silico Laboratory for Patient-Specific Treatment of Asthma and COPD", Drug Delivery to the Lungs Conference - DDL25.  UK.  January 1, 2014
  • "Boundary-layer transition in turbomachinery flows".  United Technologies Research Center.  January 1, 2014
  • "Laminar-to-turbulence transition: Rare events and their localized instabilities".  University of Minnesota.  January 1, 2014
  • "Laminar-turbulent interfaces".  McGill University.  January 1, 2014
  • "Inner and outer interactions in transitional wall-bounded shear flows".  The Pennsylvania State University.  January 1, 2014
  • "The elusive onset of turbulence and the laminar-turbulence interface".  Johns Hopkins University.  January 1, 2014
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