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Topological analysis of the formation of Jet-Wake flow pattern in centrifugal impeller channel
Authors:Zheng  Qun  Liu  Shun-long
Institution:(1) School of Power and Nuclear Energy Engineering, Harbin Engineering University, 150001 Harbin, China
Abstract:Topological analyses are carried out for the numerical results of internal flow field in centrifugal impeller. Topological rules of the singular point characteristics of the limiting streamline are derived and used to determine three dimensional separation patterns in centrifugal impeller and to verify the numerical results. The results reveal that the wake is saddle to nodal closed separation and the formation, its onset point and its developing process of Jet-Wake Flow pattern in centrifugal impeller are presented in this paper.
Keywords:Jet-Wake flow patter  topological analysis  numerical computation  centrifugal impeller
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