| Summary: | 碩士 === 國立臺灣海洋大學 === 河海工程學系 === 99 === The experiments were conducted in the wind tunnel to measure the dispersion characteristics of the two side by side sources located before fence，Effects of the location of fence, gap of two sources, and source hight on the wind flow and dispersion characteristics were investigated.
Experimental results show that:(1)The wind accelerated as it past the fence, then the wind speed decreased, due to blockage effect of the fence. Furthermore,the reverse flow appeared behind the fence.(2)When the gap of two sources was 18 times source diameter, two concentration plumes interacted and merged around at downstream distance of three times of source heights.
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