静水中气泡上升运动特性的数值模拟研究

摘要

The integrated method of numerical simulation and experimental study is adopted to carry out research on the motion behaviors of bubble rising in still water. Under the condition of considering Basset force and without considering it, the couple solution to the derived equation for the single bubble rising motion control in still water is carried out, on the basis of which, a comparative analysis is made of the differences between the simulated values of rising velocities of bubbles with different initial radiuses and the real determined ones. Also, this paper studies the relation between time and the simulation rising velocities of the bubbles with different initial radiuses in still water as well as the effect of the rising velocities and initial radius upon the bubble radius variation rates under the condition of considering Basset forces.%采用数值模拟和实验研究相结合的方法,对静水中气泡上升运动特性进行了研究.在考虑和不考虑Basset力的情况下对推导出的静水中单个气泡上升运动控制方程进行耦合求解的基础上,对比分析了不同初始半径气泡上升速度模拟值与实测值之间的差异,研究了在考虑Basset力的情况下静水中不同初始半径气泡的模拟上升速度与时间的关系以及上升速度和初始半径对气泡半径变化率的影响.