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磁场对双扩散液层热毛细对流的影响
Alternative TitleEFFECT OF MAGNETIC FIELD ON THERMOCAPILLARY CONVECTION IN A DOUBLE-DIFFUSIVE LIQUID LAYER
李炜; 姜燕妮; 颜君毅; 陈启生
Source Publication力学学报
2012-05-18
Volume44Issue:3Pages:481-486
ISSN0459-1879
Abstract通过数值模拟的方法对磁场作用下的双扩散液层热毛细对流进行了研究,模型中同时考虑了热毛细效应和溶质毛细效应的存在.研究结果显示,外部磁场能够有效削弱液层内热毛细对流的强度,改变热毛细对流的对流结构;随着磁场强度的增大,液层内热毛细对流的对流强度逐渐减小,热质传递过程中扩散效应逐渐得到增强;最终,溶质浓度沿水平方向呈梯度分布.因此,当磁场强度足够大时能够实现晶体生长中所需的纯扩散条件.
Other AbstractEffect of magnetic field on thermocapillary convection in a double-diffusive liquid layer was investigated by numerical simulation, in which both the thermal Marangoni effect and solutal Marangoni effect were considered. The computational results show that thermocapillary convection is effectively weakened by external magnetic field and the convective pattern is changed. With magnetic field intensity increasing, the convective intensity is decreased gradually; the diffusive effect in the process of heat and mass transfer is strengthened, and the solute concentration distribution indicates a gradient along the horizontal direction. Therefore, the pure diffusion process in crystal growth can be realized as magnetic field intensity is sufficiently large.
Keyword热毛细对流 磁场 双扩散 水平温度梯度
Subject Area微重力流体力学
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Indexed ByCSCD ; EI
Language中文
Funding Organization国家自然科学基金资助项目(10972226)
CSCD IDCSCD:4544801
DepartmentNML流动稳定性与复杂流动
Classification二类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46431
Collection国家微重力实验室
Corresponding Author李炜
Recommended Citation
GB/T 7714
李炜,姜燕妮,颜君毅,等. 磁场对双扩散液层热毛细对流的影响[J]. 力学学报,2012,44(3):481-486.
APA 李炜,姜燕妮,颜君毅,&陈启生.(2012).磁场对双扩散液层热毛细对流的影响.力学学报,44(3),481-486.
MLA 李炜,et al."磁场对双扩散液层热毛细对流的影响".力学学报 44.3(2012):481-486.
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