Convective Heat Transfer in Open Cell Metal Foams

Open Cell Metal Foams: Measurement and Numerical Modelling of Fluid Flow and Heat Transfer

We herein present results from experimental investigations and new numerical methods for the investigation of fluid flow and heat transfer in cellular solids, in particular open cell metal foams. Results from a custom made test facility contribute to enlarge the public available database of open cell metal foams and serve for the validation of applied commercial and inhouse numerical methods. C...

Experimental study of free convective heat transfer in a direction-sensitive open cavity

The aim of the present study was to propose a panel being sensitive to the direction of heat transfer. For this purpose, a vertical rectangular cavity with prescribed dimensions was prepared and filled with water as the working fluid. A vertical mid-plane solid partition was installed within the cavity. Two relatively wide openings were created at the top and bottom of the partition and they we...

Transient Convective Heat Transfer

In nature, as well as within the human-made thermal systems, the time-variable regimes are more commonly encountered, if not always, than the permanent regimes. Nevertheless, studies in convection are still more frequent in the permanent regimes, undoubtedly due to the related difficulties in calculation in terms of time and cost of computation. One may distinguish two categories of time-depend...

Convective heat transfer in foams under laminar flow in pipes and tube bundles.

The present study reports experimental data and scaling analysis for forced convection of foams and microfoams in laminar flow in circular and rectangular tubes as well as in tube bundles. Foams and microfoams are pseudoplastic (shear thinning) two-phase fluids consisting of tightly packed bubbles with diameters ranging from tens of microns to a few millimeters. They have found applications in ...

Direct Simulation of Transport in Open-Cell Metal Foams