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題 名 | 防風構造物防鹽效果之風洞試驗研究=Wind Tunnel Experiment on the Effect of Salt Spray Reduction of Windbreak Structures |
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作 者 | 王浩中; 梁大慶; | 書刊名 | 水土保持學報 |
卷 期 | 29:4 1997.12[民86.12] |
頁 次 | 頁417-427 |
分類號 | 434.287 |
關鍵詞 | 風洞試驗; 防風效果; 防鹽效果; Wind tunnel experiment; Windbreak efficiency; Salt spray reduction; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究係於風洞內模擬大氣邊界層內流場及近地大氣中鹽分分佈情形,探討各種 密度之防風網、不同型式之百葉防風柵及防風牆等構造物的防風、防鹽效果,並分析防風與 防鹽兩者間相互關係,以期未來在現地提供最佳防風、防鹽構造物設計之參考。其結果分述 如下: 一、防風網之密度與防風、防鹽效果,具有二次函數之關係。 Y=3.417+63.010X-43.468X �� r=0.9004* Y��=-28.074+139.436X-84.450X �� r=0.9716** Y: 防風效果 Y: 防鹽效果 X ��: 防風網密度 (%) 二、防風構造物之防風效果的對數值與防鹽 效果成正比。三、葉片間距相同之百葉防風柵,其防鹽效果隨著葉片角度的增加而減小。四 、防風效果以密度 70% 防風網最佳; 防鹽效果以葉片間距 1.0cm、葉片角度 45° 之百葉防 風柵最佳。 |
英文摘要 | This study was to investigate the effects on salt spray reduction and windbreak efficiency for different structures, including net, wall and Venetian-blinds. Simulating the flow field of boundary layer and salt spray distribution with the wind tunnel, we analyzed the relationships between various windbreak constructions and their effects. The results were concluded as follows:1.A quadratic relationship exists between the effect of the salt spray reducation and the density of windbreak net. Y=3.417+63.020X-43.468X �� r=0.9004* Y �� =-28.074+139.436X-84.450X �� r=0.9716** Y:Windbreak efficiency Y ��:Salt spray reduction X:Density of net(%) 2.The logarithm of windbreak efficiency is related in direct proportion to salt spray reduction. 3.In Venetian-blinds windbreak, salt spray reduction decreased with increase of blade angle in the constant partition between tow blades. 4.In general, the best set of windbreak efficiency is the windbreak net with 70% density and the best salt spray reduction is the Venetian-blinds at angle 45 °, partition 1 cm. |
本系統中英文摘要資訊取自各篇刊載內容。