Computational fluid dynamics analysis of heat transfer in oscillating flow through a channel filled with metal foam

A computational fluid dynamics analysis of forced convective heat transfer has been conducted numerically on the heat transfer of oscillating flow through a channel filled with metal foamsubjected to a constant copper plate heat flux. The flow field and heat transfer were modeled using the Darcy-Brinkman-Forchheimer and corresponding energy equations. The surface temperature distribution on heated plate and local Nusselt number were calculated. The effect ofamplitude and frequency of oscillating flow on heat transfer in porous channel were analyzed. The results of numerical analysis showed significantly enhancement in heat transfer by inserting metal foam in channel on heated plate. Furthermore, local Nusselt number increases withemploying high amplitude and frequency of oscillating air flow. Effect of thermal conductivity of metal foam and Reynolds number were also numerically analyzed. Results showed that an increase in thermal conductivity of metal foam and Reynolds number can significantly increasethe heat transfer. It is revealed that the proposed numerical model can efficiently provide useful information for the design of metal foam filled heat sinks with oscillatory inlet flow.

Keywords:

Heat transfer , Oscillating flow , Oscillatory frequency and amplitude , metal foam , Numerical modeling