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A modified turbulent heat-flux model for predicting heat transfer in separating-reattaching flows and film cooling applications
, Article Applied Thermal Engineering ; Volume 110 , 2017 , Pages 1609-1623 ; 13594311 (ISSN) ; Chaharlang Kiani, K ; Karimi, M ; Sharif University of Technology
Elsevier Ltd
2017
Abstract
The present study addresses a new effort to improve the prediction of the thermal field in separating-reattaching flows by making modifications in a low-Reynolds-number (LRN) version of HOGGDH heat-flux model proposed by Suga and Abe (2000). The modifications are based on introducing non-equilibrium effects of hydrodynamic flow field in the heat-flux model. Using an analytical approach, we have implemented P/ε, ignored in the base version, to the modified version. To do so, the model structure was changed and a damping function which is more sensitive to non-equilibrium flow features is also applied to the model. The modified heat-flux formulation along with a second moment closure...