Journal
COMPUTERS & FLUIDS
Volume 34, Issue 10, Pages 1223-1238Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compfluid.2004.09.006
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We present a numerical scheme to study the transient flow behaviour in complex geometries. The Navier-Stokes equations are discretized with a high-resolution Fourier pseudo-spectral discretization with adaptive time-stepping. Using a penalisation technique solid boundaries of arbitrary shape can be easily taken into account. As application we present different simulations of unsteady flows, typically encountered in chemical reactors. We study transitional flows in tube bundles (arrays of cylinders and squares) for different Reynolds numbers and angles of incidence and a channel flow with an obstacle. (c) 2004 Elsevier Ltd. All rights reserved.
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