Influence Analysis of the Bypass Structure on Entrainment Ratio of a Subcritical Ejector

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Influence Analysis of the Bypass Structure on Entrainment Ratio of a Subcritical Ejector

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[1]LIU Huadong,JIN Zhaoyang,WANG Dingbiao,et al.Influence Analysis of the Bypass Structure on Entrainment Ratio of a Subcritical Ejector[J].Journal of Zhengzhou University (Engineering Science),2023,44(06):48-53.[doi:10.13705/j.issn.1671-6833.20223.02.008]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 44卷 Number of periods: 2023 06 Page number: 48-53 Column: Public date: 2023-12-25

Title:: Influence Analysis of the Bypass Structure on Entrainment Ratio of a Subcritical Ejector

Author(s):: LIU Huadong; JIN Zhaoyang; WANG Dingbiao; HAO Qi; DANG Hao; ZHANG Yuxiang; School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China

Keywords:: entrainment ratio; inlet angle; inlet width; inlet pressure; bypass ejector

CLC:: TB65

DOI:: 10.13705/j.issn.1671-6833.20223.02.008

Abstract:: Regarding to the low efficiency, a bypass structure was set to improve the internal fluid of a traditional ejector. Computational fluid dynamics was conducted to study the influence of the structure and the working parameters of the bypass on the flow field, including the bypass inlet angle, width and the flow pressure. The optimum matching parameters was also investigated. Based on the simulation results, when all other parameters of the ejector were fixed, the entrain ratio increased firstly and then decreased with the increase of the inlet angle, the width and the flow pressure of the bypass, respectively, and there existed the optimum parameters. In this investigation, the optimum inlet angle, width and the flow pressure of the bypass was 15°, 3 mm and 618. 5 kPa. Compared with the traditional ejector, the entrainment ratio of the bypass ejector could be increased by 25. 7% - 56. 8% in the same conditions.

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