The stability of an interface between viscous fluids subjected to a high-frequency magnetic field and consequences for electromagnetic casting

1995 ◽  
Vol 287 ◽  
pp. 133-150 ◽  
Author(s):  
Deepak ◽  
J. W. Evans
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Applied Field ◽  
Reasonable Assumption ◽  
Inviscid Fluids ◽  
Electromagnetic Casting ◽  
Frequency Magnetic Field ◽  
High Frequency Magnetic Field ◽  
The Stability ◽  
The Magnetic Field

The stability of an interface between inviscid fluids subjected to a high-frequency magnetic field has been examined previously by Garnier & Moreau (1983). The present paper extends that study to include the viscosity of both fluids in order to estimate the damping rates of the perturbations. Furthermore, Garnier & Moreau made an assumption that the frequency of oscillation of the interface could be neglected compared to the frequency of the applied field; they concluded that the applied field was not destabilizing. That (apparently reasonable) assumption has been lifted in the present work and the consequence is that the magnetic field is seen to lead to instability over a significant range of wavelengths. Application of this analysis to the electromagnetic casting of aluminium is discussed.

scholarly journals ANALYSIS OF HIGH-FREQUENCY C-CORE MAGNETIC FLUX LEAKAGES FOR BONE TUMOR WITH INDUCTION HEATING BY USING MULTI-COIL

2019 ◽  
Author(s):  
Metharak Jokpudsa ◽  
Supawat Kotchapradit ◽  
Chanchai Thongsopa ◽  
Thanaset Thosdeekoraphat
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Tumor Tissue ◽  
Low Frequency ◽  
Heat Energy ◽  
High Frequencies ◽  
Frequency Magnetic Field ◽  
High Frequency Magnetic Field ◽  
The Magnetic Field ◽  
Flux Leakage

High-frequency magnetic field has been developed pervasively. The induction of heat from the magnetic field can help to treat tumor tissue to a certain extent. Normally, treatment by the low-frequency magnetic field needed to be combined with magnetic substances. To assist in the induction of magnetic fields and reduce flux leakage. However, there are studies that have found that high frequencies can cause heat to tumor tissue. In this paper present, a new magnetic application will focus on the analysis of the high-frequency magnetic nickel core with multi-coil. In order to focus the heat energy using a high-frequency magnetic field into the tumor tissue. The magnetic coil was excited by 915 MHz signal and the combination of tissues used are muscle, bone, and tumor. The magnetic power on the heating predicted by the analytical model, the power loss density (2.98e-6 w/m3) was analyzed using the CST microwave studio.

Motion behavior of non-metallic particles under high frequency magnetic field

2009 ◽  
Vol 19 (3) ◽  
pp. 674-680 ◽  
Author(s):  
Zhong-tao ZHANG ◽  
Qing-tao GUO ◽  
Feng-yun YU ◽  
Jie LI ◽  
Jian ZHANG ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Metallic Particles ◽  
Frequency Magnetic Field ◽  
High Frequency Magnetic Field ◽  
Motion Behavior

High frequency magnetic field sensors based on the Faraday effect in garnet thick films

1992 ◽  
Vol 60 (17) ◽  
pp. 2048-2050 ◽  
Author(s):  
R. Wolfe ◽  
E. M. Gyorgy ◽  
R. A. Lieberman ◽  
V. J. Fratello ◽  
S. J. Licht ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Faraday Effect ◽  
Thick Films ◽  
Magnetic Field Sensors ◽  
Frequency Magnetic Field ◽  
High Frequency Magnetic Field

Numerical Study on the CZ Silicon Melt Convection for High Efficient Solar Cell

Solar Energy ◽  
2003 ◽  
Author(s):  
Tetsuo Munakata ◽  
Satoshi Someya
Keyword(s):  
Magnetic Field ◽  
Solar Cell ◽  
High Frequency ◽  
High Quality ◽  
High Efficient ◽  
Silicon Melt ◽  
Frequency Magnetic Field ◽  
High Frequency Magnetic Field ◽  
Melt Convection

Conversion efficiency of solar cell is strongly affected by quality of substrate and the quality of substrate is influenced by melt convection if the substrate crystal is grown by melt growth technique. Therefore, melt convection control techniques are important to produce a high quality single crystal. In this paper, we have proposed a high frequency magnetic field applied CZ method and investigated the effect of high frequency magnetic field on silicon melt convection. The result reveals that the high frequency magnetic fields affect the tendency of the melt convection: until certain intensity of the high frequency magnetic field, the melt convection is suppressed and above such intensity of the high frequency magnetic field, the melt convection intensity is enhanced. This result indicates that the melt convection can be controlled by the high frequency magnetic field and the high quality silicon single crystals will be grown by this method.

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