【摘要】 研究了气泡在磁性液体中的上升过程.用VOF方法追踪了气泡的自由界面,并预测了气泡的变形.考虑了磁场强度对不同起始形貌的气泡的影响,并且发现气泡的最终形貌受磁场强度的影响,当磁场强度较弱时,动力学压力占主导,使气泡变扁,当磁场强度强时,磁性压力占主导,使气泡变圆.当磁场较弱时,起始形貌对气泡的最终形态有影响.更多还原

【Abstract】 The gas bubble rising in a magnetic fluid(MF)was studied.The free surface of gas bubble is tracked using the volume-of-fluid(VOF)method,and the deformation of gas bubble is predicted.The effect of intensity of magnetic field on a rising bubble with various initial shapes is studied.It is found that the terminal bubble shape depends on the intensity of magnetic field.In the case of a weak magnetic field,dynamic pressure is dominant and makes the bubble oblate,while in the case of a strong magnetic filed,the magnetic pressure makes bubble spherical,the initial shape slightly influences the final state of bubble when there is no magnetic field.更多还原