THMT-15. Proceedings of the Eighth International Symposium On Turbulence Heat and Mass Transfer
DOI: 10.1615/ICHMT.2015.THMT-15
ISBN Print: 978-1-56700-427-4
ISBN CD: 978-1-56700-428-8
Computational modelling of buoyancy-driven flows in highly inclined tall cavities
pages 363-366
DOI: 10.1615/ICHMT.2015.THMT-15.710
RÉSUMÉ
The paper describes the application of unsteady RANS modelling to two buoyancy-driven flows in tall cavities inclined at 15° to the horizontal. In the first case the lower cavity surface is heated, and the upper cooled, resulting in unstable stratification, and in the second case the heating pattern is reversed. A k-ε and a stress transport model are used, together with an advanced wall-function approach, and comparisons are made to both experimental measurements and LES results, in order to assess to what extent the models reproduce the complex unsteady and three-dimensional flow patterns present.