Planar thermocapillary migration of two bubbles in microgravity environment

摘要: A theoretical investigation is performed on the thermocapillary motion of two bubbles in arbitrary configuration microgravity environment under assumption that surface tension high enough to keep spherical. The are driven by gradient due temperature nonuniformity surfaces. bubble interaction considered for limit small Marangoni and Reynolds numbers present paper. In order solve problem analytically, method successive reflections employed, then accurate migration velocities arbitrarily oriented planar motions derived. results demonstrate equal-size exert no influence each other at any separation because thorough cancellation thermal fluid mechanical effects, effect large smaller one becomes significant with approaching other, while remains weak. Moreover, three typical kinds trajectories identified.