Wall y+ approach for dealing with turbulent flows over a wall mounted cube

Salim Mohamed Salim, M. Ariff, Siew Cheong Cheah

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17 Citations (Scopus)

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-epsilon, standard k-omega, Reynolds Stress Model (RSM), Spalart-Allmaras (SA) and rcnormalisation group (RNG) k-epsilon 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.

Original languageEnglish
Pages (from-to)341-351
Number of pages11
JournalProgress in Computational Fluid Dynamics, An International Journal
Volume10
Issue number5-6
DOIs
Publication statusPublished - 2010

Keywords

  • wall y(+)
  • wall mounted cube
  • turbulent flow
  • near-wall treatment
  • grid generation
  • LARGE-EDDY SIMULATION
  • DEVELOPED CHANNEL FLOW
  • HEAT-TRANSFER

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