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ISSN Online: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Melting of a pure metal from an isothermal vertical wall in the presence of turbulent natural convection

Get access (open in a dialog) DOI: 10.1615/IHTC12.2260
6 pages

Résumé

Numerical study of melting from an isothermal vertical wall of pure metal, by the finite volume method. A non-orthogonal system of coordinates is employed to adapt to the irregular geometry, with a moving mesh to account to the changing domain size. The momentum equations are solved for the contravariant velocity components. The SIMPLEC algorithm handles the coupling between velocity and pressure. The numerical method is validated by comparison with available experimental data. The phase change process is driven by natural convection in the melt. As the Rayleigh number increases, the intensity of the natural convection in the melt cavity also increases and the flow can become turbulent. The purpose of the paper is to analyze in influence of the turbulent regime on the kinetic of the melting process. The turbulent flow is taken in account by a low Reynolds number model. The influence of the Rayleigh number on the velocity and temperature field is investigated.