NUMERICAL HEAT TRANSFER ANALYSIS OF METAL FOAM FOR SCRAMJET APPLICATION

Hydrocarbon fuel has been widely used in air breathing scramjets and liquid rocket engines as coolant and propellant. However, high heat flux area in scramjet needs active panel cooling with enhanced heat transfer to protect the panel from high temperature. In the present study different candidate high temperature materials and porous medium combinations are investigated for their thermal performance to effectively protect the panel from high heat flux. 3D numerical simulation is carried out to study different schemes of heat transfer enhancement based on type of channel material and porous media in a tube. Both porous medium cases and non porous medium cases are analyzed and compared. The porous medium in the channel decreased the temperature gradient of the fuel across the channel. The porous medium increased the heat transfer coefficient in the channel. Results the heat absorption of the fuel is increased. The results show that heat transfer in the nb-cb 752 with porous medium enhanced at least 4.5 times with the current configuration compared to the clear tube