A numerical simulation of airflows and SO2 concentration distributions in an arid south-western Valley |
| |
| Institution: | 1. Department of Energy Engineering and Physics, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue P.O. Box, 15875-4413 Tehran, Iran;2. Faculty of Engineering, Shahed University, P.O. Box 33191-18651, Tehran, Iran;1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China;2. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Insistute of China, Chengdu, China |
| |
| Abstract: | Three-dimensional numerical models were used to simulate wind and turbulence distributions in the Mohave Valley and plume transport from the Mohave Power Project, located at approximately 120 km south-south-east of Las Vegas, NV. The Modeled meteorological variables were input to a three-dimensional random-puff diffusion model to simulate observed tetroon trajectories and ground-level concentrations of SO2 in the Valley. Numerical simulations indicated that hourly averaged surface concentrations could differ considerably, even when the mean and turbulence variables of the airflows were kept statistically identical. The concentration variations resulted from the differences in initial turbulence velocity and inhomogeneous distributions of airflows that each puff encountered during transport. Because the range of variations is, in general, unknown for both measurements and simulations, it is difficult to assess the representativeness of the observed and simulated values, and therefore to evaluate quantitatively the modeled concentrations against observations. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
