跨临界二氧化碳离心压缩机叶轮流场计算  

Numerical Study of the Flow Field of the Transcritical Carbon Dioxide Centrifugal Compressor Impeller

作　　者：王枭 陈启明 胡四兵 饶杰 常超 Wang Xiao;Chen Qiming;Hu Sibing;Rao Jie;Chang Chao(State Key Laboratory of Compressor Technology,Anhui Province Key Laboratory of Compressor Technology,Hefei General Machinery Research Institute Co.,Ltd.,Hefei 230031,China)

机构地区：[1]合肥通用机械研究院有限公司,压缩机技术国家重点实验室,压缩机技术安徽省实验室,合肥230031

出　　处：《流体机械》2020年第10期17-21,53,共6页Fluid Machinery

基　　金：安徽省重点研究与开发计划项目(1704a0902005);合肥通用机械研究院有限公司青年科技基金项目(2019010371)。

摘　　要：针对跨临界二氧化碳离心压缩机,采用CFD方法对叶轮流场进行计算。将计算所得叶轮总焓变与试验数据进行对比,验证了计算的准确性与可靠性。分析流场内密度、比热和黏度的分布,得出二氧化碳物性特性在叶轮流场内的表现情况。分析冷凝区域的分布,得出冷凝现象形成的规律及原因,为跨临界二氧化碳离心压缩机叶轮设计提供参考和依据。For the transcritical carbon dioxide centrifugal compressor,the flow field of impeller was simulated by the CFD method.The enthalpy change of impeller obtained through calculation was compared with the experiment data,which verified the accuracy of reliability of the calculation.The distribution of density,specific heat and viscosity in the flow field was analyzed,and the exhibition of physical property of the carbon dioxide in the flow field of impeller was obtained.The distribution of condensation area was analyzed and the formation law and cause of condensation phenomenon were obtained,which provides a reference and basis for the design of the transcritical carbon dioxide centrifugal compressor impeller.

关 键 词：跨临界二氧化碳 离心压缩机叶轮 流场 物性 冷凝 

分 类 号：TH432[机械工程—机械制造及自动化] TK05[动力工程及工程热物理]