The interfacial convective heat transfer coefficient is a key parameter in the study of the flow and heat transfer process of porous foam using the local thermal non-equilibrium model.In this paper,the body center tangent sphere method is used to construct the cell pore structure of porous foam to simulate the real physical structure of porous foam.The numerical simulation of the flow and heat transfer process under the pore structure is carried out to calculate the convective heat transfer coefficient,and the Nusselt number obtained from the experimental research in the literature is compared to verify the accuracy of the numerical simulation.Then,the flow and heat transfer process of porous foam with different pore structures is numerically simulated,The criterion correlation of interfacial convection heat transfer coefficient is established by data fitting.Based on the established correlation of the interfacial convection heat transfer coefficient criterion,the macro numerical simulation of the flow and heat transfer process of porous foam under the two assumptions of local heat balance and local heat non-equilibrium was carried out and compared with the experimental values in the literature.The accuracy of the established correlation was further verified,indicating that the method of obtaining the interfacial convection heat transfer coefficient based on the structure of single cell pores was effective.It is also verified that the local thermal non-equilibrium model can more accurately describe the flow and heat transfer process of porous foam.
porous foamsingle-cell pore structurelocal thermal non-equilibriumintcrfacial con-vection heat transfer coefficient
维普
万方数据
