| Title |
A Study on the Pollutant Dispersion over a Mountain Valley Region(I):Wind Tunnel Experiments |
| Keywords |
Heat dispersion ; 열확산 ; Gas dispersion ; 가스확산 ; Concentration profile ; 농도분포 ; Boundary layer wind tunnel ; 경계층 풍동 ; Complex terrain ; 복잡지형 |
| Abstract |
Heat and SF6 gas dispersions over a complex terrain were investigated using wind tunnel. The wind speed, temperature and concentration profiles were measured for the 1/1000 scale complicated terrain model in an Eiffel type boundary layer wind tunnel with test section of 2.5m in height and 4.5m in width. The scale model was mounted on the top of a plate which can rotate with respect to the approaching wind. Dispersion processes from a continuous emission source driven by various wind direction were investigated, including plume climbing over the steep up-slope of the mountain and down-spreading toward the lower level of the valley. Extensive dispersion experiment data(wind speeds and concentration profiles) were provided for verification and validation of dispersion models. Under the identical flow and emission conditions, the independently measured profiles of the temperature and SF6 con-centration showed an excellent agreement which ensured the credibility of the results. |