离子型活性剂溶液中气泡的速度

Velocity of a Bubble in Ionic Surfactant Solution

建立了离子型表面活性剂溶液中气泡运动的数学模型 ,重点讨论了活性剂离子间静电相互作用对气泡运动的影响。采用边界配置点法数值求解了气泡表面吸附的活性剂浓度、气泡表面流体速度以及气泡在溶液中的运动速度。数值结果表明 ,气泡速度随静电相互作用常数K的增大而增大。与非离子型表面活性剂溶液中气泡的运动规律一样 ,气泡速度随Biot数Bi的增大而增大 。

The migration of a bubble settling through an ionic surfactant solution was studied numerically in this paper. The electrostatic interaction between the surfactant ions, which affects the migration regulation of the bubble, is discussed in detail. The surface concentration of the adsorbed surfactants, the surface velocity and the migration velocity of the bubble are obtained by a boundary collocation technique. The numerical results show the velocity of the bubble increases as the electrostatic interaction coefficient K increases. And the same as the migration of the bubble in nonionic surfactant solution,the velocity of the bubble increases with Biot number Bi and decreases with marangoni number Ma.