期刊
COMPUTERS & FLUIDS
卷 43, 期 1, 页码 143-153出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compfluid.2010.09.033
关键词
Spectral multi-domain method; Chebyshev collocation technique; BiGlobal instability analysis; Lid-driven cavity flows; Sparse-serial vs dense-parallel algorithm
Three-dimensional linear instability analyses are presented of steady two-dimensional laminar flows in the lid-driven cavity defined by [15] and further analyzed in the present volume [1], as well as in a derivative of the same geometry. It is shown that in both of the geometries considered three-dimensional BiGlobal instability leads to deviation of the flow from the two-dimensional solution; the analysis results are used to define low- and high-Reynolds number solutions by reference to the flow physics. Critical conditions for linear global instability and neutral loops are presented in both geometries. (C) 2010 Elsevier Ltd. All rights reserved.
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