|
| Front tracking simulation of bubble rising under the Marangoni effect |
| Received:September 27, 2017 Revised:May 03, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20170927001 |
| KeyWord:Marangoni effect two-phase flow thermocapillary migration interfacial tension |
| Author | Institution |
| 林圣享 |
南昌大学 机电工程学院, 南昌 |
| 朱宝杰 |
南昌大学 机电工程学院, 南昌 |
| 易义武 |
南昌大学 机电工程学院, 南昌 |
| 张莹 |
南昌大学 机电工程学院, 南昌 |
| 刘佩尧 |
南昌大学 机电工程学院, 南昌 |
| 马明 |
美国圣母大学 航空机械系, 南本德 46556 |
|
| Hits: 1629 |
| Download times: 973 |
| Abstract: |
| Using front tracking method combined with the continuum surface force model,the bubble rising motion caused by the Marangoni effect in the symmetric flow field with non-uniform temperature distribution in the vertical direction was studied.The motion of a single bubble and a coaxial double bubble under different Ma and Pr numbers were simulated.The results show that the motion of bubbles is different under different Ma numbers.The larger the Ma number,the faster the bubble moves to a steady state,and there is a positive correlation between the maximum velocity of bubble motion and the Ma number;increasing the viscosity or decreasing the thermal diffusivity caused by increasing the Pr number will weaken the migration motion of the bubble;the local motion of the double bubbles in the Marangoni convection confirms that the temperature gradient is closely related to the bubble motion velocity. |