A Wind Tunnel and Numerical Investigation of Turbulent Dispersion in Coastal Atmospheric Boundary Layers |
| |
Authors: | R Ohba Y Shao A Kouchi |
| |
Institution: | (1) Nagasaki Research & Development Centre, Mitsubishi Heavy Industries, Japan;(2) Centre for Advanced Numerical Computation, in Engineering and Science, UNSW, Sydney, Australia |
| |
Abstract: | Thermal internal boundary layers in onshore air flows have a significant influence on pollutant diffusion in coastal areas. Although several models for this diffusion problem exist, measurements for model verification are scarce. In this paper, we present a set of wind tunnel observations and examine the performance of a Lagrangian stochastic model. The good agreement between the model simulation and the tunnel measurements confirms the usefulness of the Lagrangian stochastic model for practical purposes. Sensitivity tests of the model to turbulence statistics show that uncertainty in velocity skewness to the extent of observational scatter does not seem to have a significant influence on pollutant dispersion, while uncertainties in turbulence intensity (variance) significantly influence the dispersion pattern. |
| |
Keywords: | Dispersion Lagrangian stochastic model Thermal internal boundary layer Wind-tunnel study |
本文献已被 SpringerLink 等数据库收录! |
|