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层流叶片在压气机中的应用研究

Journal of Engineering Thermophysics(2017)

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Abstract
压气机叶片表面层流流动及转捩现象的捕捉是研究压气机层流叶型的重点和关键.通过基于SST转捩模型的数值方法对某压气机叶型进行数值模拟分析,以精确捕捉普通湍流模型无法捕捉的叶片表面的层流流动及转捩现象,并给定叶片表面转捩的判定依据.在此基础上深入研究低雷诺数环境和高湍流度环境对压气机叶片表面层流流动的影响,验证了在实际压气机环境下,叶片表面的层流流动是可能存在的.为后续压气机层流叶型设计提供数值验证手段和可行性验证基础.
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Key words
laminar blade,transition,skin friction resistance,low reynolds number,high turbulence level
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