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STUDY OF TURBULENT DISPERSION OF POLLUTANT PLUMES IN A STAGGERED ARRAY OF OBSTACLES

Bing-Chen Wang
Department of Mechanical & Manufacturing Engineering, University of Manitoba, Winnipeg, MB, R3T 5V6, Canada

Eugene Yee
Defence Research & Development Canada − Suffield P.O. Box 4000, Medicine Hat, Alberta, T1A 8K6, Canada

Fue-Sang Lien
Department of Mechanical Engineering, University of Waterloo Waterloo, Ontario, N2L 3G1, Canada

Аннотация

In this research, we report a numerical and experimental study of the turbulent dispersion of a passive scalar released from a continuous ground-level point-source in a staggered array of 16 × 16 cubic obstacles. The numerical simulation of the flow and scalar fields was based on the Reynolds-averaged Navier-Stokes method and experimental measurements of the flow and dispersion were obtained in a boundary-layer water channel. Results of a detailed comparison between the water-channel experiment of flow and dispersion and model predictions of the mean flow, turbulence kinetic energy, mean concentration and concentration variance are presented.