One recommended solution involves using porous material and a coolant. The coolant is to flow axially along the length of the fin. To evaluate this proposal, consider a porous rod of radius ro and...

One recommended solution involves using porous material and a coolant. The coolant is to flow axially along the length of the fin. To evaluate this proposal, consider a porous rod of radius ro and length L. One end is heated with a flux ???? ''. Coolant enters the opposite end at temperature ??8 and flow rate ??? . The specific heat is ?????? and the thermal conductivity of the solid-fluid matrix is ??¯. The cylindrical surface exchanges heat by convection. The ambient temperature is ??8 and the heat transfer coefficient is h.