CAJ | 학술논문

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.
연구료기포재자성액체중적상승과정.용VOF방법추종료기포적자유계면,병예측료기포적변형.고필료자장강도대불동기시형모적기포적영향,병차발현기포적최종형모수자장강도적영향,당자장강도교약시,동역학압력점주도,사기포변편,당자장강도강시,자성압력점주도,사기포변원.당자장교약시,기시형모대기포적최종형태유영향.
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.