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Indexed by:期刊论文

Date of Publication:2014-07-03

Journal:INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS

Included Journals:SCIE、EI、Scopus

Volume:28

Issue:6-10

Page Number:301-315

ISSN No.:1061-8562

Key Words:turbulence model; CFD; wall function; heat transfer; impingement jet

Abstract:The flow and temperature fields of a turbulent impinging jet are rather complex. In order to accurately describe the flow and heat-transfer process, two important factors that must be taken into account are the turbulence model and the wall function. Several turbulence models, including kappa-epsilon turbulence models, kappa-omega turbulence models, low-Re turbulence models, the kappa-kappa(l)-omega turbulence model, the Transition SST turbulence model, the V2F turbulence model and the RSM turbulence model, are examined and compared to experimental data. Furthermore, for the near wall region, various wall functions are presented for comparison and they include the standard wall function, the scale wall function, the non-equilibrium wall function and the enhanced wall function. The distribution features of velocity, turbulent kinetic energy and Nusselt number are determined in order to provide a reliable reference for the multiphase impinging jet in the future.