【摘要】 以数值模拟的方式对某高转速弹用涡喷发动机离心压气机改型后内部三维流场进行了详细的数值模拟,得到相应的特性曲线与主要的参数分布。计算结果的分析表明,在设计点其结果与设计值基本吻合;在堵塞状态时径向扩压器和轴向扩压器中都存在不同程度的分离,尤其是轴向扩压器中分离现象更为严重,这些都造成了不同程度的气流损失,导致了效率的降低;数值计算结果对进一步改进设计此类压气机有一定参考价值。更多还原

【Abstract】 A three-dimensional flow field of a high-speed centrifugal compressor has been investigated by numerical simulation in this paper.The characteristic curve and primary parameter of different rotation speed has been obtained.The numerical results indicate that the separation flow in axial and radial diffuser was severely,especially in the axial diffuser,which could decrease the efficiency of this centrifugal compressor.The numerical results could be used in the improving and redesign of the compressor.更多还原