流体机械

2004, (08) 14-17+4

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离心压缩机外部损失的联合计算
Calculation of Leakage and Friction Loss in Centrifugal Compressor

闻苏平,李景银,刘秋洪
WEN Su-ping,LI Jing-yin,LIU Qiu-hong (Xi'an Jiaotong University,Xi'an 710049,China)

摘要(Abstract):

通过对离心叶轮外侧间隙内泄漏气体的流动分析 ,给出了间隙内的速度分布 ,利用Goldstein的对数壁面率处理摩擦应力分布 ,通过求解边界层动量积分方程可以获得间隙内的压力分布和切应力分布 ,进而可以同时联合计算压缩机的外部损失。
The velocity distribution formula in the gap between shroud or hub and casing under the turbulence condition was proposed.The logarithmic law of the wall that obtained by Goldstein is used to express the shear stress.The friction loss and leakage loss of centrifugal compressor is calculated by the boundary layer momentum integral equations. The leakage loss and friction loss are good agreement wth experimental results.

关键词(KeyWords): 离心叶轮;漏气损失;轮阻损失;间隙
centrifugal impeller;friction loss;leakage loss;gap

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作者(Author): 闻苏平,李景银,刘秋洪
WEN Su-ping,LI Jing-yin,LIU Qiu-hong (Xi'an Jiaotong University,Xi'an 710049,China)

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