YEUNG, P.K.

Assistant Professor
E-Mail Address: puikuen.yeung@aerospace.gatech.edu
B.Sc(Eng.),  Mechanical Engineering, 1980, University of Hong Kong
M.Phil., Mechanical Engineering, 1984, University of Hong Kong
Ph.D., Mechanical Engineering, 1989, Cornell University

    Professor P.K. Yeung joined the faculty at Georgia Tech in 1992, after taking post-doctoral positions at Queen's University at Kingston (Canada) and at Pennsylvania State University. His research interests are in the study of turbulence, including problems in mixing and dispersion using massively parallel computing techniques and the latest national supercomputing platforms. Direct numerical simulations of the exact Navier-Stokes and passive scalar transport equations are performed using pseudo-spectral methods and more than 100 million grid points. Data from these simulations have been used to investigate basic issues in Reynolds number dependence and similarity scaling, nonlinear scale interactions in Fourier space, differential diffusion of multiple scalars with different molecular diffusivities, and the turbulent dispersion of contaminant material from a Lagrangian viewpoint following the fluid.  Improved physical understanding in these problems is important in applications such as combustion and pollutant dispersion in the environment. Recent work has also emphasized the use of the simulation data for model testing and development.
    Professor Yeung has collaborated with scientists at NASA Langley Research Center and at CSIRO Division of Atmospheric Research (Australia) through extended visits. As of late 1997 he has published 18 journal articles and contributed 16 papers to conference proceedings volumes.

SELECTED ACTIVE PROJECTS

"Numerical Simulation Of Turbulent Dispersion And Relative Diffusion", Sponsored by: the US Environmental Protection Agency.

"Numerical Simulations And Stochastic Modeling Of Turbulent Mixing And Dispersion." Sponsored by: the National Science Foundation.

"Lagrangian Studies Of Turbulent Mixing And Dispersion Using High-Resolution Computations."  Sponsored by: the National Science Foundation.

SELECTED PUBLICATIONS

Yeung, P.K. and Zhou, Y. (1997)  " On The Universality Of The Kolmogorov Constant In Numerical Simulations Of Turbulence."  Physical Review E  Vol. 56, 1746-1752.

Shen, P. and Yeung, P.K. (1997)  "Fluid Particle Dispersion In Homogeneous Turbulent Shear Flow."    Physics of Fluids  Vol. 9, (in press , Nov. 1997).

Yeung, P.K. (1996)   "Multi-Scalar Triadic Interactions In Differential Diffusion With And Without Mean Scalar Gradients".  Journal of Fluid Mechanics  Vol. 321, pp. 235-278

Yeung, P.K. and Moseley, C.A. (1995) "A Message-Passing, Distributed Memory Parallel Algorithm For Direct Numerical Simulation Of Turbulence With Particle Tracking." In  "Parallel Computational Fluid Dynamics: Implementations And Results Using Parallel Computers," edited by A. Ecer,  J. Periaux, N. Satofuka, S. Taylor. Elsevier Science Publishers, Amsterdam; pp. 473-480.  Proceedings of the Parallel CFD Conference, Pasadena, CA,  July 1995.

Yeung, P.K. (1994), "Direct Numerical Simulation Of Two-Particle Relative Diffusion In Isotropic Turbulence."  Physics of Fluids  Vol. 6, pp. 3416-3428.

Yeung, P.K. and Pope, S.B. (1989) "Lagrangian Statistics From Direct Numerical Simulations Of Isotropic Turbulence."  Journal of Fluid Mechanics , Vol. 207, pp. 531-586.