Fixed-grid simulation of convection-dominated melting in a rectangular cavity

Numerical solutions for the convection-dominated melting in a rectangular c avity are presented. The enthalpy-porosity model is employed as the mathema tical model. This model is applied in conjunction with the EIT method to de tect boundary movement in a phase changing environment. The absorption and evolution of latent heat during the phase change is dealt with by the entha lpy-based energy equation. This seems to be more efficient than resolving t he temperature-based energy equation. The velocity switch-off, which is req uired when solid changes into liquid, is modeled by the porous medium assum ption. For efficiency and simplicity of the solution procedure, this paper proposes a simple algorithm, which iterates the temperature and the liquid fraction of the cells comprising the front layer. The numerical results agr ee reasonably well with the experimental data and other previous works usin g the transformed-grid system.