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Numerical Analysis of Flow and Pollutant Dispersion over 2-D Bell Shaped Hills  

Jung, Young-Rae (School of Mechanical Engineering, Pusan National University)
Park, Keun (School of Mechanical Engineering, Pusan National University)
Park, Warn-Gyu (School of Mechanical Engineering, Pusan National University)
Park, Ok-Hyun (Department of Environmental Engineering, Pusan National University)
Publication Information
Journal of Mechanical Science and Technology / v.17, no.7, 2003 , pp. 1054-1062 More about this Journal
Abstract
The numerical simulations of flow and pollutant particle dispersion are described for two-dimensional bell shaped hills with various aspect ratios. The Reynolds-averaged incompressible Navier-Stokes equations with low Reynolds number $\kappa$-$\varepsilon$ turbulent model are used to simulate the flowfield. The gradient diffusion equation is used to solve the pollutant dispersion field. The code was validated by comparison of velocity, turbulent kinetic energy, Reynolds shear stress, speed-up ratio, and ground level concentration with experimental and numerical data. Good agreement has been achieved and it has been found that the pollutant dispersion pattern and ground level concentration have been strongly influenced by the hill shape and aspect ratio, as well as the location and height of the source.
Keywords
Pollutant Dispersion; Navier-Stokes Equation; Gradient Diffusion Equation; Low-Reynolds Number $\kappa$-$\varepsilon$ Model; Bell Shaped Hill; Ground Level Concentration;
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Times Cited By KSCI : 1  (Citation Analysis)
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