Characteristics of a magnetic fluid heat transport device Part 1: Numerical simulation of flow and heat transport phenomena

2000 ◽  
Vol 214 (4) ◽  
pp. 549-561 ◽  
Author(s):  
H Yamaguchi ◽  
I Kobori ◽  
N Kobayashi
Keyword(s):  
Magnetic Field ◽  
Numerical Analysis ◽  
Heat Transport ◽  
Magnetic Fluid ◽  
Numerical Study ◽  
Thermal Characteristics ◽  
Geometrical Model ◽  
Flow State ◽  
Vortex Zone ◽  
Transport Device

A numerical analysis is conducted in order to study the flow state and thermal characteristics of a magnetic fluid heat transport device. A simple geometrical model of the device is considered in the present numerical study. The highly simplified marker-and-cell (HSMAC) method is adopted for the numerical analysis, where the transient solutions are obtained in the two-dimensional axisymmetric computational plane. From results of the numerical calculation it can be shown that the vortex zone appears when a magnetic field is applied and the configuration of flow associated with the vortex zone changes for variation in the magnetic field, increasing or decreasing the heat transport capability dependent upon the conditions of the device.

A Mini Heat Transport Device Based On Thermo-Sensitive Magnetic Fluid

2007 ◽  
Vol 11 (1-2) ◽  
pp. 201-210 ◽  
Author(s):  
Koji Fumoto ◽  
Hideaki Yamagishi ◽  
Masahiro Ikegawa
Keyword(s):  
Heat Transport ◽  
Magnetic Fluid ◽  
Transport Device

A numerical study on the effect of static magnetic field on the hemodynamics of magnetic fluid in biological porous media

2020 ◽  
Vol 141 (5) ◽  
pp. 1543-1558
Author(s):  
Seyed Mahdi Hosseinikhah ◽  
Borhan Beigzadeh ◽  
Majid Siavashi ◽  
Mahdi Halabian
Keyword(s):  
Magnetic Field ◽  
Porous Media ◽  
Static Magnetic Field ◽  
Magnetic Fluid ◽  
Numerical Study

Frequency Analysis of Semi-Active Tuned Magnetic Fluid Column Damper with Two Electromagnets

2014 ◽  
Vol 792 ◽  
pp. 275-280 ◽  
Author(s):  
Kazuki Ikari ◽  
Hideaki Masuda ◽  
Toshiyuki Oyamada ◽  
Tatsuo Sawada
Keyword(s):  
Magnetic Field ◽  
Numerical Analysis ◽  
Numerical Solution ◽  
Natural Frequency ◽  
Frequency Analysis ◽  
Magnetic Fluid ◽  
Momentum Equation ◽  
Experimental Results ◽  
Working Fluid ◽  
Damping Characteristics

A new semi-active tuned liquid column damper (TLCD) that uses magnetic fluid as its working fluid (MF-TLCD) is presented. An MF-TLCD alters the natural frequency of the magnetic fluid column that forms the resident liquid inside the MF-TLCD by applying a magnetic field. We investigated the damping characteristics of an MF-TLCD equipped with two electromagnets, and also the transition of the natural frequency, which is strongly related to the damping performance. The coupled structure-MF-TLCD system was investigated both experimentally and by numerical analysis. The momentum equation of an MF-TLCD and its numerical solution are presented. The numerical results are validated by comparison with experimental results.

Numerical Simulation of Magnetic Fluid Used in Sintering and Cooling Equipments Seals as a Functional Material

2011 ◽  
Vol 239-242 ◽  
pp. 3096-3099
Author(s):  
Ming Hua Bai ◽  
Hong Liang Zhou
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Fluid Flow ◽  
External Magnetic Field ◽  
Magnetic Fluid ◽  
Permanent Magnets ◽  
Quiescent State ◽  
Flow State ◽  
Functional Material ◽  
Volume Force

Magnetic fluid as a functional material can produce volume force under external magnetic field, for the purpose of controlling the magnetic fluid flow state in the non-magnetic sealing groove with external magnetic field, the volume force is written as a function form of AZ to do with the numerical simulation of magnetic fluid flow in the sealing groove. The result shows that the magnetic fluid which distributes at the right-angle edges of the two permanent magnets nearby the separator presents unsteady swirl flow due to the volume force, while the rest magnetic fluid is in the quiescent state. It means that the magnetic fluid seal method can effectively solve the air leakage of band sintering machine and circular cooling machine.

scholarly journals Study for Magnetically Controlled Heat Transport Device Using Magnetic Fluid.

1998 ◽  
Vol 64 (617) ◽  
pp. 85-91 ◽  
Author(s):  
Hiroshi YAMAGUCHI ◽  
Itaru KOBORI ◽  
Yoshinobu ISHIGAKI
Keyword(s):  
Heat Transport ◽  
Magnetic Fluid ◽  
Transport Device

Experimental study for a heat transport device using magnetic fluid: Improvement by a regenerative thermomagnetic heat cycle

2000 ◽  
Vol 214 (7) ◽  
pp. 981-994
Author(s):  
H Yamaguchi ◽  
I Kobori ◽  
N Kobayashi
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Heat Transport ◽  
Magnetic Fluid ◽  
Pipe Wall ◽  
Temperature Sensitive ◽  
Heat Cycle ◽  
One Dimensional ◽  
Working Principle ◽  
Transport Device

Heat transporting characteristics are investigated experimentally for a heat transport device using a temperature-sensitive magnetic fluid. In the present study, in particular the regenerative thermomagnetic heat cycle is considered by allowing heat conduction in the inner pipe wall of the device. According to the heat transport configuration studied, the lower end of the device is heated while the upper end is cooled isothermally when the device is placed vertically. Experimental results show that a relatively high amount of heat can be transported in comparison with the case of an adiabatic inner pipe wall, indicating that the thermomagnetic heat cycle in the device is improved. The correlation obtained from one-dimensional analysis provides a reasonable means of assessing estimating experimental data when the thermomagnetic heat cycle based on the working principle is satisfied.

Sign in / Sign up

Export Citation Format

Share Document