Experimental and theoretical investigations on Taylor± Couette flow of ferrofluids subject to magnetic fields

Experimental and theoretical investigations on Taylor± Couette flow of ferrofluids subject to magnetic fields
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磁场作用下铁磁流体泰勒±库埃特流动的实验和理论研究

DOI:
10.1016/j.phpro.2010.11.029
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发表时间:
2010
期刊:
Physics Procedia
影响因子:
--
通讯作者:
S. Odenbach
S. Odenbach
中科院分区:
--
文献类型:
--
作者:
M. Reindl;A. Leschhorn;M. Lücke;S. Odenbach

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磁场对铁磁流体流动的影响通过流体磁化弛豫的表达式进入基本流体动力学方程。尽管铁流体动力学的深入研究,问题的适当方法来描述平衡外的磁化仍然是开放的。本文以Taylor-Couette系统为模型,通过实验数据与理论数据的比较,强调了这一问题。Taylor-Couette系统的流体单元受到均匀的轴向磁场的影响,并且流动剖面由超声多普勒测速仪测量。本文测量了在不同轴向磁场强度下圆形Couette流向Taylor涡流转变的实验结果,并与理论进行了比较和讨论。
The effect of magnetic fields on flows of ferrofluids enters the basic hydrodynamic equations by an expression for the relaxation of magnetization of the fluid. Despite intense investigations of ferrohydrodynamics, the question of the appropriate approach to describe the magnetization outside equilibrium is still open. By a comparison of experimental and theoretical data of a Taylor–Couette system as a model system, this question is highlighted in this paper. The fluid cell of the Taylor–Couette system is subject to a homogeneous axial magnetic field and the flow profiles are measured by ultrasound-Doppler velocimetry. In this paper, experimental results concerning the transition from circular Couette flow to Taylor vortex flow at different axial magnetic field strengths are measured, compared to theory and discussed.
库埃特-泰勒流中的波数选择和埃克豪斯不稳定性
DOI: --
发表时间: 1986
期刊:
影响因子: --
作者:
G. Ahlers;D. Cannell;M. A. Dominguez;R. Heinrichs
通讯作者: R. Heinrichs
DOI: 10.1103/physreve.64.061405
发表时间: 2001-12-01
期刊: PHYSICAL REVIEW E
影响因子: 2.4
作者:
Müller, HW;Liu, M
通讯作者: Liu, M
轴向磁场中铁磁流体圆形库埃特流的稳定性:多分散性的影响。
DOI: --
发表时间: 2009
期刊: Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子: --
作者:
A. Leschhorn;M. Lücke;C. Hoffmann;S. Altmeyer
通讯作者: S. Altmeyer