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THMT-18. Turbulence Heat and Mass Transfer 9 Proceedings of the Ninth International Symposium On Turbulence Heat and Mass Transfer
July, 10-13, 2018, Rio de Janeiro, Brazil

DOI: 10.1615/THMT-18


ISBN Print: 978-1-56700-468-7

ISBN Online: 978-1-56700-467-0

ISSN Print: 2377-2816

Large-eddy simulation of flow about a rotating cylinder at large Reynolds number

pages 1001-1004
DOI: 10.1615/THMT-18.1110
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Краткое описание

Wall-resolved large-eddy simulations (LES) of flow over a rotating cylinder are described. The two important flow parameters are the Reynolds number ReD = U8734; D/ν and the rotation speed α = ΩD/(2U). We discuss LES data sets obtained by varying α at various ReD with our main results at ReD = 6 × 104. Our emphasis centers on the lift-crisis phenomenon where, at fixed and large ReD, the lift coefficient CL decreases suddenly as α passes though a narrow, critical band. We show the variation of time/span-wise averaged pressure and skinfriction coefficients around the cylinder surface as α is increased. The LES is shown to capture the lift crisis at ReD = 6 × 104. Calculations of CL are compared with experimental measurements.

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