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Turbulence characteristics of high Reynolds number flow inside a three-dimensional cubic lid-driven cavity
D. Samantaray, M.K. Das,
Published in Elsevier Ltd
2020
Volume: 84
   
Pages: 23 - 39
Abstract
Large eddy simulation (LES) with dynamic Smagorinsky model (DSM) has been implemented to elicit the turbulence characteristic of the flow inside a cubic lid-driven cavity at Reynolds number of 10000. The coherent organized structures tear, pair and disintegrate leading to the evolution of turbulence. They are reflected in the RMS (root mean square) plots of the turbulent fluctuations in different planes. The flow has a near zero helicity value; unlike the other two velocity component, the probability density function of span wise velocity component shows the flow symmetry on the both side of the mid plane in span wise direction; kurtosis being largely leptokurtic except near wall locations indicates their peakedness. The quadrant analysis shows presence of more coherent structures near the down stream wall and the joint probability distribution function shows that turbulence is anisotropic. Power spectra is observed to follow the −5∕3 law. Both Taylor microscale λ and Kolmogorov length scale η show greater near-wall dissipation © 2020 Elsevier Masson SAS
About the journal
JournalData powered by TypesetEuropean Journal of Mechanics, B/Fluids
PublisherData powered by TypesetElsevier Ltd
ISSN09977546