Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7056721 | International Journal of Heat and Mass Transfer | 2015 | 7 Pages |
Abstract
Natural convection in water saturated metal foams is explored though experiments and numerical simulations. From these data a new generalized heat transfer correlation is developed for saturated metal foam with superposed water layers heated from below with arbitrary placement of the foam with respect to the bounding heated and cooled surfaces. The macroscopic correlation allows prediction of heat transfer with known or easily measurable properties of the foam. For Rayleigh numbers from 106 to 108, water saturated copper foam enhances heat transfer compared to pure water when the foam is adjacent to the heated or cooled boundary, but immersion of the foam without contact with the boundary provides no benefit. The enhancement of heat transfer is attributed primarily to conduction.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Yan Su, Aaron Wade, Jane H. Davidson,