作者: D. Drikakis,
期刊: Physics of Fluids (AIP Available online 1997) 卷期: Volume 9, issue 1
页码: 76-87
ISSN:1070-6631
年代: 1997
DOI:10.1063/1.869174
出版商: AIP
数据来源: AIP
摘要:
A numerical study of laminar incompressible flows in symmetric plane sudden expansions was carried out. Computations were performed for various Reynolds number and expansion ratios. The results revealed that the flow remains symmetric up to a certain Reynolds number depending on the expansion ratio, while asymmetries appear at higher Reynolds numbers. The computations indicated that the critical Reynolds number of the symmetry‐breaking bifurcation reduces when increasing the expansion ratio while the flow regains symmetry downstream of an initial channel length. The flow asymmetries were verified by comparing several discretization schemes up to fourth order of accuracy as well as various iterative solvers. ©1997 American Institute of Physics.
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