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摘 要
.......設計不同多邊形斷面的中空管，使用HyperWorks CFD分析固定風速吹過中空管，比較管表面上的壓力跟速度的變化，根據結果，八邊形斷面具有最小的壓力跟風速。
.......關鍵字: CFD流場分析、中空管、風壓。
Abstract
.......The cross-section area of those hollow poles, which is used by several polygons with the variable-length side. The several types of the structure were investigated and compared for the result of the pressure and wind speed variation of the pole's surface after The fixed airflow through the pole structure analyzed by HyperWorks CFD software. Base on the result and decide on 8 polygons design.
.......Key words: CFD analysis、hollow pole、wind pressure
1 前言
.......升降桅桿適用各種機動通信, 偵搜, 監測及需要舉升作業的任務，結構會使用多邊形的管材，多邊形斷面使軸向具有抗旋轉能力[1]，使管材之間不會相互旋轉
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