建築物風場對植栽影響之數值分析研究

Building Wind Farms Impact on the Planting of Computational Fluid Dynamics Study

陳俊傑(Chun-Chieh Chen)

《健康與建築雜誌》 1卷1期 (2013/10) Pp. 22-29

https://doi.org/10.6299/JHA.2013.1.1.R3.22

摘要

背景：建築物風道效應及騎樓風，造成行人不適與居住環境惡化。目的：研究目地在分析建築物的風道效應和騎樓風對運河河畔植栽的影響。方法：研究方法以Computational Fluid Dynamics（CFD）計算體學軟體來模擬與分析。結果：研究結果如下。一、在建築物之近尾流區，植栽的生長情形最佳，此與預料之結果吻合。二、行道樹在強風長時間的吹襲下，其主要枝葉會沿著風吹方向生長，造成枝葉生長不平均而失去行道樹應有的遮陽功能。三、建築物之間風場強勁，在建築物間之樹木受風強吹襲而導致死亡。結論：行道樹因建築物產生強勁騎樓風而死亡。應妥善處理。

關鍵字

風道效應 ； 騎樓風 ； 近尾流區 ； 計算流體力學軟體

並列摘要

Backgrounds: Building duct effect and horseshoe vortex result in deterioration of the living environment with pedestrian discomfort.Purposes: Analysis the building duct effect and horseshoe vortex impact on trees.Methods: Use computational fluid dynamics (CFD) analysis method to simulate the case.Results: 1. In the near wake region of buildings, planting is optimal growth conditions. 2. Trees hit by strong winds for a long time. Its main branches grow along the wind direction does not mean and lose function of shade trees. 3. The wind between buildings is strong, trees between buildings are hit by strong winds and cause death.Conclusions: Trees between buildings are hit by horseshoe vortex and cause death. It should be properly handled.

並列關鍵字

Wind Chunnel ； Horseshoe ； Near wake region ； Computational Fluid Dynamics (CFD)