Free access article

ESAIM: Proc., 1999, Vol. 7, pp. 313-324
DOI: 10.1051/proc:1999029

Simulation of heat-vortex interaction by the diffusion velocity method

Yoshifumi Ogami

Department of Mechanical Engineering, Ritsumeikan University. Noji-Higashi, Shiga 525-8577, Japan

Abstract
A new vortex scheme for simulating flows involving natural convection and interaction of temperature and vorticity is presented. The creation of vorticity from temperature is modeled either by creating a vortex pair from a temperature particle or by changing the strength of vortices according to the vorticity equation. The diffusion velocity method is used for simulating the diffusion of vorticity and temperature. The vortices of negative and positive strength are separately treated in diffusion process to avoid an unreasonably large diffusion velocity. Our results indicates that these techniques successfully simulate creation of vorticity from heat, diffusion and convection of temperature and vorticity, and interaction of them.

© EDP Sciences, ESAIM 1999

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