A study of heat transfer in the case of single-phase convection in a duct with a porous insert

The effect of a porous matrix on heat transfer in a plane channel under conditionss of forced convection is investigated by the integral method using a two-temperature model, with allowance made for coolant mixing. Analytical expressions for the heat transfer coefficient are obtained which are in good agreement with experimental data. It is shown that heat flow inhomogeneity leads to a significant reduction in the local heat transfer coefficient, particularly at a large distance from the heat flow maximum.