Numerical simulation of heat and fluid flow in a curved pipe partially filled with a anisotropic porous matrix

Abstract

Curved ducts are frequently encountered in industrial flow applications such as heat exchangers, cooling systems for rotating electrical machinery, etc. As known, one of the main features of flows in a bend conduct is the secondary flow organized in the form of two identical vortices in the cross section of the conduct. Several studies put in evidence the effect of the secondary flow on the heat transfer in the bend conducts Yao (1984), Yao et al. (1978) and Prusa and Yao (1982). Otherwise, numerous studies Alkam et al. (1999) and Alkam et al. (2001) showed that the insertion of a porous matrix in the cross section of a channel or a pipe tube has a positive effect on the heat transfer.