TY  - JOUR
AU  - LI, Ling
AU  - Kimura, Shigeo
PY  - 2007
TI  - Numerical Simulation on Stratified Flow over an Isolated Mountain Ridge
JO  - Tsinghua Science and Technology
SN  - 1007-0214
SP  - 332
EP  - 336
VL  - 12
IS  - 3
AB  - The characteristics of stratified flow over an isolated mountain ridge have been investigated numerically. The two-dimensional model equations, based on the time-dependent Reynolds averaged Navier-Stokes equations, are solved numerically using an implicit time integration in a fitted body grid arrangement to simulate stratified flow over an isolated ideally bell-shaped mountain. The simulation results are in good agreement with the existing corresponding analytical and approximate solutions. It is shown that for atmospheric conditions where non-hydrostatic effects become dominant, the model is able to reproduce typical flow features. The dispersion characteristics of gaseous pollutants in the stratified flow have also been studied. The dispersion patterns for two typical atmospheric conditions are compared. The results show that the presence of a gravity wave causes vertical stratification of the pollutant concentration and affects the diffusive characteristics of the pollutants.
UR  - https://doi.org/10.1016/S1007-0214(07)70049-4
DO  - 10.1016/S1007-0214(07)70049-4