期刊
JOURNAL OF FLUIDS AND STRUCTURES
卷 22, 期 6-7, 页码 757-771出版社
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jfluidstructs.2006.04.021
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The present contribution analyses the turbulence properties in unsteady flows around bluff body wakes and provides a database for improvement and validation of turbulence models, concerning the present class of nonequilibrium flows. The flow around a circular cylinder with a low aspect ratio and a high blockage coefficient is investigated. This confined environment is used in order to allow direct comparisons with realisable 3-D Navier-Stokes computations avoiding 'infinite' conditions. The flow is investigated in the beginning of the critical regime at Reynolds number 140000. The analysis is carried out by means of 2-D PIV, of 3-C PIV and of high-frequency 2-D PIV. The experimental analysis contributes to confirm the validity of advanced statistical turbulence modelling for unsteady flows around bodies. (c) 2006 Elsevier Ltd. All rights reserved.
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