Numerical analysis of the effect of transverse alternating mass force on nucleate boiling based on lattice Boltzmann method
The hybrid thermal lattice Boltzmann method coupling single component pseudo-potential model of lattice Boltzmann method with finite difference was used to investigate the nucleate boiling process of single bubble under the action of transverse alternating mass force.The effect of amplitude and alternating frequency of transverse alternating mass force on the detachment characteristics of single bubble from the bottom wall was investigated at different contact angles and superheat degrees.Results show that the addition of transverse alternating mass force can result in the reduction of bubble detachment diameter and accelerate the bubble detachment from the bottom wall simultaneously.Secondly,the transverse alternating body force has greater effect on the detachment behavior of bubble on the hydrophobic wall.The transverse alternating body force has greater effect on the detachment behavior of bubble on the wall with greater superheat.In addition,when the amplitude of transverse alternating mass force is greater than 0.01,the addition of transverse alternating mass force decreases the detachment diameter and period of bubble,while its alternating frequency only decreases the detachment period of bubble in a certain frequency range.
nucleate boilingalternating mass forcelattice Boltzmann methodpseudo-potential model
万方数据
维普
