Researches on Solid-liquid Melting Process Based on MRT-LBM Simulation
Due to the characteristics of little temperature/volume change and strong latent heat release/absorption,the solid-liquid melting process is extensively utilized in engineering technologies.In order to better utilize the solid-liquid melting process for energy storage,based on double multiple relaxation time lattice Boltzmann method,the solid-liquid melting process in the square cavity is numerically investigated in this work.The effects of different Rayleigh numbers(Ra)and Stefan numbers(Ste)on the melting process are studied,and the corresponding dimensionless results are presented.The findings show that an increase in Ra number is beneficial for the formation of velocity vortices as well as for causing the convection to begin earlier.The Ste number has no noticeable effect on the formation of velocity vortices,but it can also bring the onset time of convection forward.Additionally,a decrease in Ra or Ste numbers is advantageous for accelerating the melting process.
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