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題 名 | Aerodynamic Forces on Two Stationary and Oscillating Square Prisms in Tandem and Side by Side Arrangements=順風向及橫風向排列相鄰兩振動方柱之氣動力現象研究 |
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作 者 | 盧博堅; 鄭啟明; 鄭傑文; | 書刊名 | 中國工程學刊 |
卷 期 | 21:5 1998.09[民87.09] |
頁 次 | 頁535-546 |
分類號 | 440.137 |
關鍵詞 | 高層結構群; 氣動力; 強制振動; Groups of high-rise structures; Aerodynamic force; Force oscillation; |
語 文 | 英文(English) |
中文摘要 | 為了對群體高層結構物受風力作用之氣動力現象有更進一步的了解。本研究以相 鄰兩方柱體在順風向排列及橫風向排列不同間距比下進行風洞實驗。首先探討兩固定柱體 間之交互作用現象,然後探討一柱體固定、一柱體振動下的現象,最後再探討兩柱體皆振動 下的情形。研究結果發現,兩柱體不僅受到周圍流場的影響,隨著相鄰間距比的改變及不同 的排列方式,兩柱體會產生加強或壓抑約互制作用及氣動力反應,且流場的改變會造成氣動 力現象的改變。 |
英文摘要 | In order to gain further understanding of aerodynamic forces and their effects on groups of high-rise buildings, this study used windunnelt experiments. Two square prisms were arranged both in tandem and side-by-side arrangement with different spacings in between. Similar experiments were carried out to study the interactions of aerodynamics between the two prisms when both were stationary, when only one prism oscillated, and finally, when both prisms oscillated. The results showed that the aerodynamic responses were either enhanced or suppressed by the spacing ratios, the oscillating frequencies, and the mutual influences of the two square prisms in various arrangements. The aerodynamics also changed due to the occurrences of different flow patterns, such as channel flow, deflected flow, pulsating sating flow, and so on. Obviously, the aerodynamics of the flow patterns terns of the two square prisms in tandem and side-by-side arrangements proved to be more complex than those of a single square prism. |
本系統中英文摘要資訊取自各篇刊載內容。