NONLINEAR FLOW PHENOMENA IN A SYMMETRIC SUDDEN EXPANSION
NONLINEAR FLOW PHENOMENA IN A SYMMETRIC SUDDEN EXPANSION
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DOI：
10.1017/s0022112090001707
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发表时间：
1990-02-01
影响因子：
3.7
通讯作者：
CLIFFE, KA
中科院分区：
文献类型：
--
作者：
FEARN, RM;MULLIN, T;CLIFFE, KA
本文用实验和数值方法研究了对称突扩中定常非对称流动的起源。我们表明，不对称性出现在一个破缺分岔和实验和数值计算之间的良好协议。在较高的雷诺数下，流动变得依赖于时间，并且有实验证据表明，这与三维效应有关。
The origin of steady asymmetric flows in a symmetric sudden expansion is studied using experimental and numerical techniques. We show that the asymmetry arises at a symmetry-breaking bifurcation and good agreement between the experiments and numerical calculations is obtained. At higher Reynolds numbers the flow becomes time-dependent and there is experimental evidence that this is associated with three-dimensional effects.