Nowadays, the need for developing more effective heat exchange technologies and innovative materials is well recongnized. metal foams have a great potential for enhancing the thermal efficiency of heat transfer devices, while alllowing for the use of smaller and lighter equipments. However it is necessary to compromise between the augmented heat transfer rate and the increased pressure drop induced by the tortuous flow passages for practical applications. This study is mainly motivated to analyze the characteristics of flow and conjugate heat transfer in metal foams using opensource OpenFOAM. This paper presents a numerical analysis of flow and conjugate heat transfer through seven different metal foam. pressure drop, effective thermal conductive coefficient and effective convective coefficient. increase with decreasing porosity. However, when Reynolds number has been increased above a certain value, effective convective coefficient and Nusselt number declined increase rate. this study result can be extraxted for the detailed mechanism of the flow and heat transfer in such complicated geometries.