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Straight flow turbine runner hole-shape rim seal design based on CFD
CHEN Qifan,CHEN Funan #,WANG Zhengwei *
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
*Correspondence author
#Submitted by
Subject:
Funding: the Key Project of National Science Foundation of China（No.No.51439002）, the Specialized Research Fund for the Doctoral Program of Higher Education （No.No. 20130002110072）
Opened online:18 May 2017
Accepted by: none
Citation: CHEN Qifan,CHEN Funan,WANG Zhengwei.Straight flow turbine runner hole-shape rim seal design based on CFD[OL]. [18 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4730434
 
 
Since its advantages of the straight passageway and large mass-flow ratio, the straight flow turbine has become an important type in the development of low-head hydraulic resource. However, due to the special configuration of its runner, that the runner rim rotating follows the blades, high demands is required on its runner rim seal performance. Rim seal defects restricted the application and development of the straight flow turbine for many years. By redesigning a hole-shape rim seal using the commercial CFD software, this paper discussing the influence of different hole-shape parameters on the rim seal performance by an orthogonal experiment. Through the analysis, the hole-shape rim seal reduce 20% leakage compared with using the plate clearance seal. ?????
Keywords:Hole-shape seal; Rim seal; Numerical simulation; Orthogonal experiment; Straight flow turbine;
 
 
 

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