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Large eddy simulation of turbulent flow downstream of a backward-facing step

✍ Scribed by Wenquan Wang; Lixiang Zhang; Yan Yan


Book ID
119357452
Publisher
Elsevier
Year
2012
Tongue
English
Weight
380 KB
Volume
31
Category
Article
ISSN
1877-7058

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Recirculating flow around a backward-facing step is caIculated by large eddy simulation (LES). The reattachment length is found to be xR/H = 8 for a Smagorinsky constant of C = 0.15, and xR/H = 9 for C = 0.10. In the recirculating region, three eddy structures can be observed in the instantaneous st

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The heat transfer and fluid mechanics of a turbulent separating and reattaching flow past a backward-facing step are studied using large eddy simulation. A fully coupled, collocated-grid, low-Mach number preconditioned, compressible formulation employing central differences was developed to conduct

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The feasibility of using a commercial CFD code for large eddy simulation (LES) is investigated. A first test on homogeneous turbulence decay allows a fine-tuning of the eddy viscosity with respect to the numerical features of the code. Then, a flow over forward-backward facing step at Reynolds numbe