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Turbulence Heat and Mass Transfer 6. Proceedings of the Sixth International Symposium On Turbulence Heat and Mass Transfer
September, 14-18, 2009, Rome, Italy

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
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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.

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