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    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/123229


    題名: Numerical study of optimum parameter design for film cooling effectiveness by Taguchi method
    作者: Ouyang, Kwan;Chen, Tseng-Yuan;Wu, Jun-You
    關鍵詞: Film cooling;Barchan-dune-shaped ramp;Tab;Taguchi method;Numerical simulation
    日期: 2023-02-12
    上傳時間: 2023-04-28 17:22:03 (UTC+8)
    出版者: SLSEVIER
    摘要: The present numerical study investigated a novel film cooling scheme that combines a cylindrical hole with an upstream Barchan-dune ramp and a triangular tab over the hole. Simulations revealed that this arrangement can induce an additional anti-kidney vortex pair on the outside of the original primary kidney vortices to suppress the penetration of the high-temperature mainstream by the cooling flow, increasing cooling effectiveness. Compared with schemes employing only a triangular tab or a Barchan-dune ramp, the novel film cooling scheme achieved superior cooling performance. An optimum parameter design is determined through the Taguchi method. Three parameters were investigated, namely, the Barchan-dune-shaped ramp height, triangular tab length, and blowing ratio, under various incoming temperatures. Analysis of variance revealed that the blowing ratio has the greatest influence on cooling effectiveness. An average cooling effectiveness of 34.1% was achieved by the optimum parameter design.
    關聯: International Journal of Heat and Fluid Flow 100, p.109118
    DOI: 10.1016/j.ijheatfluidflow.2023.109118
    顯示於類別:[航空太空工程學系暨研究所] 期刊論文

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