On the nature of tip clearance flow in subsonic centrifugal impellers

作     者：LIU ZhengXian PING Yan ZANGENEH Mehrdad 

作者机构：School of Mechanical Engineering Tianjin University State Key Laboratory of Engines Tianjin University Department of Mechanical Engineering University College London 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51276125) the National Basic Research Program of China ("973" Project) (Grant No. 2012CB720101) 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2013年第56卷第9期

页      码：2170-2177页

摘      要：Increasing demand for downsizing of engines to improve CO2 emissions has resulted in renewed efforts to improve the efficiency and expend the stable operating range of the centrifugal compressors used in petro-chemical equipment and turbochargers. The losses in these compressors are dominated by tip clearance flow. In this paper, the tip clearance flow in the subsonic impeller is numerically investigated. The nature of the tip clearance in inducer, axial to radial bend and exducer are studied in detail at design and off-design conditions by examining the detailed flow field through the clearance and the interaction of the clearance flow with the shear effect with the endwalls. The correlation between blade loading and span wise geometry and clearance flow at different locations are presented.

主 题 词：叶尖间隙流 离心叶轮 性质 亚音速 二氧化碳排放量 离心压缩机 非设计条件 石油化工设备 

学科分类：0810[工学-土木类] 080704[080704] 08[工学] 082502[082502] 0807[工学-电子信息类] 0805[工学-能源动力学] 0825[工学-环境科学与工程类] 0702[理学-物理学类] 0812[工学-测绘类] 

核心收录：

D　O　I：10.1007/s11431-013-5313-3

馆 藏 号：203658290...