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This study examines the performance of one point closure turbulence models in  predicting of heat and momentum transfer of impinging flows. The scope of  this paper is limited to impinging jet on a moving wall and heat transfer.  The impinging distance is fixed to 8 thickness of the nozzle (8e) for this  study. Two parameters are considered: the jet exit Reynolds number  (10000≤Re≤25000) and the jet-surface velocity ratio (0≤Rsj≤4). the flow  field structure at a given surface-to-jet velocity ratio is independent of  the jet Reynolds number, a slight modification of the flow field is observed  for low surface-to-jet velocity ratio (Rsj<0.25) whereas at higher ratios  Rsj>0.25, the flow field is significantly modified. Good agreement with  experimental results is obtained for surface-to-jet velocity ratio 0≤Rsj≤2.  the purpose of this paper is to consider the case of higher of surface-to-jet  velocity Rsj>2. A further study of heat transfer is achieved and shows that  the stagnation points the local heat transfer coefficient have a maximum  value. The local Nusselt number at the impinging region tends to decrease  significantly when Rsj≤1.5. The evolution of average Nusselt number is  correlated according to the surface-to-jet velocity ratios for each Reynolds  number.

Computation of heat transfer of a plane turbulent jet impinging a moving plate