Numerical Investigation on the Influence of Nozzle Lip Thickness on the Flow Field and Performance of an Annular Jet Pump
Long-Zhou Xiao1,2,Xin-Ping Long1,2, Xue-Long Yang1,2
(1.School of Power and Mechanical Engineering, Wuhan University, Wuhan 43000 China; 2.Key Lab of Jet Theory and New Technology of Hubei Province, Wuhan 43000 China)
Abstract:
The performance of an annular jet pump (AJP) is determined by its area ratio A(ratio of cross sectional area of throat and annular nozzle) and flow rate ratio q (ratio of primary and secondary flow rate, Qs/Qj), while the nozzle lip thickness is neglected in the present studies. This paper presents a study on the effect of the thickness on the flow field and performance of an AJP with A=1.75. With the increasing flow rate ratio and nozzle lip thickness, a small vortex forms at the nozzle lip and keeps on growing. However, as the flow rate ratio or nozzle lip thickness is extremely low, the vortex at the lip vanishes thoroughly. Moreover, the recirculation width varies conversely with the nozzle lip thickness when the flow rate ratio q≤0.13. While the deviation of the recirculation width with different nozzle lip thickness is negligible with q≥0.13. Additionally the existence of nozzle lip hinders the momentum exchange between the primary and secondary flow and leads to a mutation of velocity gradient near the nozzle exit, which shift the recirculation downstream. Finally, based on the numerical results of the streamwise and spanwise vortex distributions in the suction chamber, the characteristics of the mixing process and the main factors accounting for the AJP performance are clarified.
Key words: annular jet pump nozzle lip recirculation streamwise vortex spanwise vortex
DOI：10.11916/j.issn.1005-9113.2014.03.009
Clc Number:TB752+.3
Fund:
删除或更新信息，请邮件至freekaoyan#163.com(#换成@)
Numerical Investigation on the Influence of Nozzle Lip Thickness on the Flow Field and Performance o
本站小编 哈尔滨工业大学/2019-10-23
相关话题/Numerical Investigation Influence Nozzle Lip
领限时大额优惠券,享本站正版考研考试资料!
优惠券领取后72小时内有效，10万种最新考研考试考证类电子打印资料任你选。涵盖全国500余所院校考研专业课、200多种职业资格考试、1100多种经典教材，产品类型包含电子书、题库、全套资料以及视频，无论您是考研复习、考证刷题，还是考前冲刺等，不同类型的产品可满足您学习上的不同需求。 ...考试优惠券 本站小编 Free壹佰分学习网 2022-09-19Influence of Si Contents on the Microstructure Evolution and Mechanical Properties of Al-Mg-Si-Cu-Zn
Influence of Si Contents on the Microstructure Evolution and Mechanical Properties of Al-Mg-Si-Cu-Zn Alloys Author NameAffiliationLiang ZhuState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaMingxing GuoS ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2020-12-05Investigations about the Atomic Structure and Mechanical Behavior of Metallic Glasses after Melt Hyd
Investigations about the Atomic Structure and Mechanical Behavior of Metallic Glasses after Melt Hydrogenation Author NameAffiliationBinbin WangNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Te ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2020-12-05Review: Recent Advancement of Experimental and Numerical Investigations for Breaking Waves
Review: Recent Advancement of Experimental and Numerical Investigations for Breaking Waves Author NameAffiliationCheng LiuState Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, CollaborativeInnovation Center for Advanced Ship an ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2020-03-06Numerical Simulation of Bubble Migration in Liquid Titanium Alloy Melt During Vertical Centrifugal C
Numerical Simulation of Bubble Migration in Liquid Titanium Alloy Melt During Vertical Centrifugal Casting Process Author NameAffiliationQin XuSchool of Mechanic and Electrical Engineering, Henan University of Technology, Zhengzhou 450001, ChinaXing WangSchool of Mechanic an ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2020-03-06齿肋赤藓早期光诱导蛋白ELIPs的生物信息学分析
齿肋赤藓早期光诱导蛋白ELIPs的生物信息学分析周雅1,高贝2,张道远11.中国科学院新疆生态与地理研究所,中国科学院干旱区生物地理与生物资源重点实验室,新疆乌鲁木齐830011;2.中国科学院大学,北京100049摘要:从齿肋赤藓转录组数据库出发,共得到39条注释的早期光诱导蛋白ScELIPsun ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2019-10-24Stress Analysis of Ellipsoidal Shell with Inner Guide Structure
Stress Analysis of Ellipsoidal Shell with Inner Guide Structure Wei-Wei Zhang, Xiao-Song Wang, Meng Chen, Shi-Jian Yuan (National Key Laboratory of Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 15000 ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2019-10-24Investigation of Cast Copper Structure
Investigation of Cast Copper Structure R K Mysik, S V Brusnitsyn, A V Sulitsin (Ural Federal University, Russia, Ekaterinburg) Abstract: In this paper, the results of exploratio ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2019-10-24Investigation of Surface Micro Waviness in Single Point Diamond Fly Cutting
Investigation of Surface Micro Waviness in Single Point Diamond Fly Cutting Sheng-Fei Wang1,2, Peng-Qiang Fu3, Fei-Hu Zhang1 , Chen-Hui An2, Yong Zhang1 (1. School of Mechatronics Engineering, Harbin Institute of Technology, Ha ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2019-10-24Quantifying Likelihood in Digital Forensic Investigations
Quantifying Likelihood in Digital Forensic Investigations Richard E Overill (Department of Informatics, King’s College London, London WC2R 2LS, United Kingdom) Abstract: While t ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2019-10-24Investigation on Skidding of Rolling Element Bearing in Loaded Zone
Investigation on Skidding of Rolling Element Bearing in Loaded Zone Yi-Min Shao1, Wen-Bing Tu1, Zai-Gang Chen1, Zhi-Jie Xie2, Bao-Yu Song2 (1. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 4000 ...哈尔滨工业大学科研学术 本站小编 哈尔滨工业大学 2019-10-24
