Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
663209 | International Journal of Heat and Mass Transfer | 2007 | 13 Pages |
Abstract
Experimental measurements and numerical simulations of natural convection in a cubical cavity heated from below and cooled from above are reported at turbulent Rayleigh numbers using water as a convective fluid (Pr = 6.0). Direct numerical simulations were carried out considering the Boussinesq approximation with a second-order finite volume code (107 ⩽ Ra ⩽ 108). The particle image velocimetry technique was used to measure the velocity field at Ra = 107, Ra = 7 Ã 107 and Ra = 108 and there was general agreement between the predicted time averaged local velocities and those experimentally measured if the heat conduction through the sidewalls was considered in the simulations.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Leonardo Valencia, Jordi Pallares, Ildefonso Cuesta, Francesc Xavier Grau,