Turbulence Heat and Mass Transfer 6. Proceedings of the Sixth International Symposium On Turbulence Heat and Mass Transfer
DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf
ISBN Print: 978-1-56700-262-1
ISSN: 2377-2816
DNS of vertical vortices in thermal convection- Effects of external forces on vortex formation
page 10
DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.2530
RÉSUMÉ
This paper has performed Direct Numerical Simulation (DNS) for vertical vortices in thermal convection. Based on flow visualization of numerical results, the physical mechanism of vortex formation is examined. Accordingly we can find two types of vortices such as a tilting type and a converged type and estimate their intensity or sustention. Also, we investigate the effects of external forces, such as an updraft or a rotation, on the process of vortex formation.