Effect of helical force on the stationary convection in a rotating ferrofluid

被引：9
|
作者：
Hounsou, P. [1 ]
Monwanou, A. V. [1 ]
Miwadinou, C. H. [1 ,2 ]
Orou, J. B. Chabi [1 ]
机构：
[1] Inst Math & Sci Phys, Lab Mecan Fluides Dynam Nonlineaire & Modelisat S, Porto Novo, Benin
[2] UNSTIM, ENS Natitingou, Dept Phys, Abomey, Benin
来源：
CHINESE JOURNAL OF PHYSICS | 2020年 / 65卷
关键词：
Thermal convection; Magnetic fluid; Helical force; Rotation; AMPLITUDE EQUATION; THERMAL-CONVECTION; BIODISTRIBUTION; INSTABILITY; LAYER;
D O I：
10.1016/j.cjph.2020.03.026
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper we studied the onset of instability in a horizontal layer of a rotating ferrofluid in the presence of the helical force. The analytical expression of the Rayleigh number of the system is determined as a function of the dimensionless numbers obtained. Then, the effect of each dimensionless parameter is studied. The helical force, the binary parameter psi then the magnetic parameters M-1, M-3 and psi m accelerate the onset of stationary convection whereas the rotation and the magnetic parameter M-2 delay it. Also all the magnetic parameters, the binary parameter and the rotation cause the convection rolls to shrink while only the helical force increases the size of these structures.
引用
收藏
页码：526 / 537
页数：12
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