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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/7852


    Title: 橫風向與扭轉向強制振動方柱體之氣動力及尾跡研究
    Other Titles: Aerodynamic Forces and Wake of a Square Prism Oscillated in Transverse and Torsional Modes in an Uniform Flow
    Authors: 盧博堅
    Contributors: 淡江大學水資源及環境工程學系
    Keywords: 橫風向振動;扭轉向振動;渦散;氣動力;Across wind vibration;Torsional vibration;Vortex shedding;Aerodynamic force
    Date: 1998
    Issue Date: 2009-03-16 17:05:24 (UTC+8)
    Abstract: 由渦散所引發的鈍狀體振動是流體和結構體間交互作用的一種現象。先前研究大多數著重在流體流經矩柱體而導致的橫向振動,以及少數探討所導致的扭轉向振動。至於兩者的共同作用則甚少提及。本計畫的主要目的將針對二維方柱體在橫風向振動與扭轉向振動耦合下對其所產生的氣動力行為與尾跡結構做一基本現象的探討,期望有助於高層建築受風力振動問題的了解,而使用在設計的考量上。本計畫將於風洞中進行實驗。逼進流場為一均勻流場。方柱體將被裝置在一振動台上作橫風向與扭轉向的強制振動。柱體軸向中央單層的昇力及扭力將透過表面壓力孔經由管線利用氣相平均法加以量測。尾跡的渦度值則將使用多根×型熱探針量得瞬時速度再利用條件取樣及相位平均法求得。量測結果將和單獨振動時之昇力,扭力與渦漩結構作比較,並找出其間的關聯性及其互制現象。
    Appears in Collections:[水資源及環境工程學系暨研究所] 研究報告

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