Study of the effect of the porous plates on the tank bottom on the boiling process
1Department of Mechanical Engineering, Bu-Ali Sina University, Hamedan, Iran
2Department of Mechatronics Engineering, Shahrekord University, Shahrekord, Iran
J Ther Eng 2019; 5(3): 149-156
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Abstract

In the present study, the boiling process is simulated in a fixed
temperature tank using the ANSYS FLUENT commercial software. E ulerian method is used to simulate the condensation and evaporation processes.
The effect of porous media on the boiling process is investigated. For this purpose, a porous medium with different
porosity coefficients is placed on the bottom of the tank and its effect on the bubble dynamics and wall thermal flux
is investigated. The simulation is carried out in two dimensions and is considered as unstable. The results show that
the porosity coefficient of the porous medium affects the bubble dynamics. The p rocess of phase change decreases
by decreasing porosity. Also, the growth rate of the bubble phase in the tank increases with increasing the heat
transfer coefficient of the porous medium