标题：
Thermocapillary flow and free-surface deformation of liquid bridge under different magnetic fields
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所属单位：
航天学院
发表刊物：
APPLIED THERMAL ENGINEERING
关键字：
Thermocapillary flow Deformable free-surface VOF Magnetic field Deformation damping
摘要：
The effects of transverse and cusp magnetic fields have been conducted on the thermocapillary flow and freesurface deformation in a silicon liquid bridge. The volume of fluid (VOF) method is adopted to track the freesurface movement. Based on our numerical results, both the transverse and cusp magnetic fields have a remarkable suppressing effect on the thermocapillary flow and free-surface deformation. The suppressing effect is directional in the case of the transverse magnetic field. At theta= 0 degrees plane, the transverse magnetic field evidently suppresses the surface deformation near z = 0.225 cm region when B-To <= 0.1 T and starts to have the suppression effect near z = 0.921 cm region when 0.1 T < B-T0 <= 0.3 T. The deformation suppression performances at theta = 90 degrees plane are opposite to that at theta = 0 degrees plane. The critical Hartmann numbers for deformation damping on the theta = 0 degrees and theta = 90 degrees planes are 230.12 and 240.22, respectively. The cusp magnetic field causes concentration of the convection vortexes near the interface. Deformation suppression capability of cusp magnetic field is stronger than that of the transverse magnetic field. The critical Hartmann numbers for deformation damping on the theta = 0 degrees and theta = 90 degrees planes have the same value of 98.36 under the cusp magnetic field.
论文类型：
期刊论文
文献类型：
J
ISSN号：
1359-4311
是否译文：
否
发表时间：
2018-05-05
合写作者：
张银,朱桂平
通讯作者：
黄护林
发表时间：
2018-05-05
学位：工学博士学位
职称：教授
所在单位：航天学院