Wall y⁺ approach for dealing with turbulent flows over a wall mounted cube
by S.M. Salim, M. Ariff, S.C. Cheah
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 10, No. 5/6, 2010

Abstract: An approach to dealing with turbulent flows over a wall mounted cube using the wall y⁺ (non-dimensional distance from the wall) as guidance in selecting the appropriate grid configuration and corresponding turbulence models is investigated using FLUENT 6.3. The study is divided into two sections – Case I and Case II, dealing with low and high Reynolds numbers, respectively. Five turbulence models – the standard k-ε, standard k-ω, Reynolds Stress Model (RSM), Spalart-Allmaras (SA) and renormalisation group (RNG) k-ε are used to solve the closure problem. Their behaviours, together with the accompanying near-wall treatments, are investigated for wall y⁺ covering the viscous sub-layer, the buffer layer and the log-law region.

Online publication date: Sun, 26-Sep-2010

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