Investigation of Coherence behind a Single Foamed Tube

Amongst the wide range of metal foam applications, the heat exchange industry is the most notable. Heat exchangers are devices that transfer heat from one medium to another that in most cases the two media are air and water. Specifically, aircooled heat exchangers consist of a number of water tubes to transfer the heat between the pumped air and the flowing water through the tubes. Covering the tubes with conventional fins is one way to increase the contact area so that it can improve the thermal performance of a bare tube bundle, however because of the blockage and the tubes’ wake, it raises the pressure drop. Therefore, designing and optimizing finned tube heat exchangers have been widely studied to increase the heat transfer and, at the same time, reduce the air side pressure drop [1-9].