Deterministic unsteady vorticity field in a driven axisymmetric cavity flow

被引：0
|
作者：
Rusch, D [1 ]
Kalfas, AI [1 ]
Abhari, RS [1 ]
Pfau, A [1 ]
Schlienger, J [1 ]
机构：
[1] ETH Zentrum, CH-8092 Zurich, Switzerland
来源：
MODELLING FLUID FLOW: THE STATE OF THE ART | 2004年
关键词：
D O I：
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中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This paper introduces a new data visualization technique for the evaluation of 3D unsteady data using the various terms of the deterministic unsteady vorticity transport equation. The toroidal vortex residing in the inlet cavity of an axial turbine rotor labyrinth is discussed using the proposed technique. Especially secondary flow effects and the effect of unsteadiness with respect to its contribution to loss generation were investigated. The analysis has allowed further insight in flow physics. It turned out that the rotational acceleration of the vortex shows a phase shift of one quarter of blade passing period relative to the vortex strength.
引用
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页码：285 / 298
页数：14
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