TY - JOUR
T1 - Macroscopic modeling of turbulent flow over a porous medium
AU - Chan, H. C.
AU - Huang, W. C.
AU - Leu, J. M.
AU - Lai, C. J.
N1 - Funding Information:
The authors thank the National Science Council of the Republic of China for financially supporting this research under Contract No. NSC 92-2211-E-006-031. The first author wishes to thank the members of National Center for Computational Hydroscience and Engineering (NCCHE, The University of Mississippi) for their helpful comments.
PY - 2007/10
Y1 - 2007/10
N2 - Turbulent flow over a porous medium has been one of the most critical subjects in numerous environmental and engineering studies. The characteristics associated with the hybrid domain, involving both a porous region and a clear fluid region, are not fully understood primarily due to a lack of proper mathematical treatments of different regions and the fluid/porous interface. The objective of this study is to present a numerical implementation for examining such a hybrid domain. The governing equations were solved by a control volume method and the k-ε turbulent model in an attempt to predict the turbulent stresses. The present model treated the hybrid domain problem with a single domain approach by adopting the classical continuity interface conditions. Our numerical results were compared with the experimental data available in the literature for two cases. The effects of the porous medium on the flow properties, including porosity and permeability, were further investigated. Moreover, the calculated flow features were examined for three different Reynolds numbers. Results indicated that the penetration extent of turbulence was Darcy number- and porosity-dependent.
AB - Turbulent flow over a porous medium has been one of the most critical subjects in numerous environmental and engineering studies. The characteristics associated with the hybrid domain, involving both a porous region and a clear fluid region, are not fully understood primarily due to a lack of proper mathematical treatments of different regions and the fluid/porous interface. The objective of this study is to present a numerical implementation for examining such a hybrid domain. The governing equations were solved by a control volume method and the k-ε turbulent model in an attempt to predict the turbulent stresses. The present model treated the hybrid domain problem with a single domain approach by adopting the classical continuity interface conditions. Our numerical results were compared with the experimental data available in the literature for two cases. The effects of the porous medium on the flow properties, including porosity and permeability, were further investigated. Moreover, the calculated flow features were examined for three different Reynolds numbers. Results indicated that the penetration extent of turbulence was Darcy number- and porosity-dependent.
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U2 - 10.1016/j.ijheatfluidflow.2006.10.005
DO - 10.1016/j.ijheatfluidflow.2006.10.005
M3 - Article
AN - SCOPUS:34548629826
SN - 0142-727X
VL - 28
SP - 1157
EP - 1166
JO - International Journal of Heat and Fluid Flow
JF - International Journal of Heat and Fluid Flow
IS - 5
ER -