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A calculation procedure for three-dimensional turbulent flow in a centrifugal impeller with any blade geometry

  • Xi'an Jiaotong University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

A method for calculating 3-D turbulent flow in a centifugal impeller is developed by solving the incompressible, steady, time averaged N-S equation in general curvilinear coordinates. The K-ε two-equation turbulence model is utilized to describe Reynolds stresses. A calculation scheme is proposed which divides a centrifugal compressor impeller into three calculation zones, i.e. the inlet zone, the channel zone, and the exit-vaneless diffuser zone. A simple and time-saving method for generating 3-D body-fitted coordinate system of a centrifugal impeller is established by means of combining an algebraic transformation with the solution of 2-D elliptic partial differential equations. This method is applied to calculate the turbulent flow in an industrial centrifugal compressor impeller. The tendency of the " jet-wake" formation and growth in the impeller can be clearly seen, and the secondary flow pattern calculated is similar to Eckardt's measurements. The calculation results at the impeller exit are also in good agreement with the experimental results performed by the authors.

源语言英语
主期刊名Turbomachinery
出版商American Society of Mechanical Engineers (ASME)
ISBN(电子版)9780791878989
DOI
出版状态已出版 - 1991
活动ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition, GT 1991 - Orlando, 美国
期限: 3 6月 19916 6月 1991

出版系列

姓名Proceedings of the ASME Turbo Expo
1

会议

会议ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition, GT 1991
国家/地区美国
Orlando
时期3/06/916/06/91

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