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題名 | 邊界層流中點式煙流延散之研究=Plume Dispersion from an Elevated Point Source within Turbulent Boundary Layers |
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作者 | 方富民; 莊秉潔; 陳鉅昌; 宋邦壽; 許志祥; Fang, Fuh-min; Tsuang, B. J.; Chen, J. C.; Soong, P. S.; She, J. S.; |
期刊 | 興大工程學報 |
出版日期 | 19980700 |
卷期 | 9:2 1998.07[民87.07] |
頁次 | 頁23-33 |
分類號 | 445.6 |
語文 | chi |
關鍵詞 | 煙流延散; 水洞試驗; Plume dispersion; Water tunnel testing; |
中文摘要 | 本研究藉水洞實驗的方式探討鄉村、市郊與都市三種形式的風況中點式污染源的延散機制。實驗中於不同地表高程處以針管釋放螢光染料,並配合雷射切光的視化技術,將各瞬間之數位化濃度場存入電腦資料庫中,據以統計分析平均濃度場中煙流橫向尺度(水平及垂直兩個方向)與濃度質心之空間變化。 |
英文摘要 | The mechanisms of elevated point-source dispersion were investigated in a water tunnel within three types of turbulent boundary layers, corresponding respectively to rural, suburb and urban ground conditions. In the experiments, the pollutant was produced by injecting a nonbuoyant fluorescent solution into the flow at various elevations within the shear flows. By adopting an image technique, the instantaneous concentration fields, in forms of laser-sheet profiles, were monitored and digitized. They were further analyzed to obtain the variations of the transverse dispersion scales (horizontal and vertical) and the concentration centroids. |
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