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Influence of various volute designs on volute overall performance 被引量:8

Influence of various volute designs on volute overall performance
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摘要 This paper discusses the influence of various volute designs on volute overall performance for a certain centrifu- gal compressor with both vaned and vaneless diffuser. Firstly, based on a free vortex flow pattern and the assumption of a circumferentially uniform flow at the design condition, a corrected method for volute design is adopted. By means of this method, corresponding to five geometric parameters affecting the volute overall performance, ten volute cases are designed. Secondly, the numerical simulation is employed and the detailed flow field and losses in different volutes with different geometric parameters are analyzed. The numerical investigation reveals that in all of the five geometric parameters, the radial location of the cross-section has the strongest influence on the performance of the volute. The non-uniform volute inlet formed by the upward vaned diffuser outlet flow is another important factor. Finally a relatively better value of D1/D2 is concluded.
出处 《Journal of Thermal Science》 SCIE EI CAS CSCD 2010年第6期505-513,共9页 热科学学报(英文版)
关键词 Centrifugal compressor CFD Volute design Total pressure loss Static pressure recovery Speed asymmetry coefficient 蜗壳设计 性能影响 几何参数 数值模拟 叶片扩压器 流动模式 修正方法 径向位置
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