強制性振動葉柵之非定常流場計算

Unsteady Flow Computation of a Vibrating Cascade

10.6124/TAASRC.200003_32(1).11

許文英(W. I. Hsu)；陳世雄(S. H. Chen)

渦輪機械 ； 非定常流 ； 計算流體力學 ； 葉片振動 ； turbomachinery ； unsteady f1ow ； CFD ； blade vibration

中國航空太空學會學刊

32卷1期（2000 / 03 / 01）

97 - 104

繁體中文

近年有許多研究利用計算流體力學的方法探討非定常流場與結構振動之耦合，增加對此一現象的瞭解並解決問題，同時協助在設計階段節省設計時程，因此成爲渦輪機械的研究重點之一。本研究以一非黏性之Euler解析方法配合時間精準之計算步驟，對一已知振動幅度與頻率的葉柵進行流場分析，結果顯示與相關之實驗量測相當一致。

The use of computational f1uid dynamic method in solving turbomachinery unsteady flow problems is becoming popular in the past decade. This will not only help the understanding of the unsteady f1ow and its coupling with structures, but will also significantly reduce the time for blade design and development. A three-dimensional time-accurate compressible Euler solver has been developed to study the unsteady flow phenomena under a blade vibrational motion. The computational method for a vibrating cascade with prescribed motion is discussed. The results show good agreement with experimental data is achieved.