Partially-Averaged Navier-Stokes (PANS) Simulations of Lid-Driven Cavity FlowPart 1: Comparison with URANS and LES
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Springer International Publishing Switzerland 2015. Multiple-resolution simulations of lid-driven cavity flows at Reynolds number of 10,000 are performed at two cavity aspect ratios (SAR) of 3:1:1 and 1:1:1. The objective is to assess the LES (Large eddy simulations), URANS (unsteady Reynolds-averaged Navier-Stokes) and PANS (partially-averaged Navier-Stokes) results against available experimental data. All of the approaches reasonably capture the mean flow velocity field for this low Reynolds number case. It is also shown that the second moments are rather small. Therefore, turbulence, while present, does not profoundly affect the mean flow statistics. It is shown that much of the flow unsteadiness is due to large scale structures that are reasonably resolved even in the URANS computation. It is expected that the distinction between the computations of different degrees of fidelity will be evident only at much higher Reynolds numbers.
Notes on Numerical Fluid Mechanics and Multidisciplinary Design
author list (cited authors)
Akula, B., Roy, P., Razi, P., Anderson, S., & Girimaji, S.
complete list of authors
Akula, Bhanesh||Roy, Pratanu||Razi, Pooyan||Anderson, Steven||Girimaji, Sharath