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Three-dimensional instability of thermal convection in a vertical Bridgman growth configuration under traveling magnetic field
Wang, Bo-Fu; Li, Yan-Hui; Zhou, Lin; Deng, An-Li; Ma, Dong-Jun; Sun, De-Jun; Jiang, Jin; Zhou, L (reprint author), China Acad Engn Phys, Inst Struct Mech, Mianyang 621900, Peoples R China.
Department空间科学部
Source PublicationFLUID DYNAMICS RESEARCH
2015
Volume47Issue:3Pages:35507
ISSN0169-5983
Language英语
KeywordLinear Instability Thermal Convection Vertical Bridgman Growth Traveling Magnetic Field
AbstractThermal convection in a vertical Bridgman growth configuration under the effect of a traveling magnetic field (TMF) is investigated numerically. The vertical Bridgman growth configuration is approximated by convection in a cylinder with a parabolic heated sidewall and isothermal-cooled end walls. The TMF effect is introduced as a usual approximation under low frequency and a low induction assumption to use the analytical expression for the Lorentz force applied in the fluid volume. The strength of the TMF force is measured by the parameter Ft. The cylinder aspect ratio (height/radius) is fixed to Gamma = 1, and the Prandtl number considered is fixed to Pr = 0.02. The base flow simultaneously excited by buoyancy and TMF is axisymmetric. Our primary goal is to determine how the flow loses stability to three-dimensional flow. An extremely multiple valued stability curve in the (Ft, Ra) plane is revealed by linear stability analysis. Three distinct flow regimes are classified, i.e., buoyancy dominated regime, buoyancy and TMF-counterbalanced regime, and TMF-dominated regime. Typical steady and unsteady threedimensional flows are illustrated.
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4623
Collection空间科学部
Corresponding AuthorZhou, L (reprint author), China Acad Engn Phys, Inst Struct Mech, Mianyang 621900, Peoples R China.
Recommended Citation
GB/T 7714
Wang, Bo-Fu,Li, Yan-Hui,Zhou, Lin,et al. Three-dimensional instability of thermal convection in a vertical Bridgman growth configuration under traveling magnetic field[J]. FLUID DYNAMICS RESEARCH,2015,47(3):35507.
APA Wang, Bo-Fu.,Li, Yan-Hui.,Zhou, Lin.,Deng, An-Li.,Ma, Dong-Jun.,...&Zhou, L .(2015).Three-dimensional instability of thermal convection in a vertical Bridgman growth configuration under traveling magnetic field.FLUID DYNAMICS RESEARCH,47(3),35507.
MLA Wang, Bo-Fu,et al."Three-dimensional instability of thermal convection in a vertical Bridgman growth configuration under traveling magnetic field".FLUID DYNAMICS RESEARCH 47.3(2015):35507.
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