scholarly journals Experimental Study of Heat Flux Distribution of Arc Driven by AC Magnetic Field

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Naomi Matsumoto ◽  
Takeo Yamamoto ◽  
Masaya Sugimoto ◽  
Koichi Takeda
Keyword(s):  
Magnetic Field ◽  
Heat Flux ◽  
Magnetic Fields ◽  
Flux Distribution ◽  
Field Experiments ◽  
Theoretical Calculations ◽  
Magnetic Flux Density ◽  
Heat Flux Distribution ◽  
Ac Magnetic Field ◽  
Flux Profile

The authors earlier developed a model to predict the heat flux distribution in an arc driven by an AC magnetic field. That theoretical model implied that the heat flux distribution depended on waveforms of the imposed AC magnetic field. Experiments were conducted in this study to validate that theoretical prediction. Theoretical calculations of heat flux distribution in the arc driven by AC magnetic field were conducted using the heat flux profile in the arc root obtained from the measurement under no magnetic field. The heat flux distributions in arcs driven by AC magnetic fields were measured by imposing two AC magnetic fields with sinusoidal and rectangular waveforms. Agreement between experimental and theoretical heat flux distributions was good. Results confirm that heat flux profiles of various types are producible by controlling the imposed magnetic flux density and its waveform.

scholarly journals Heat Flux Distribution of DC Arc under AC Magnetic Field

2010 ◽  
Vol 17 (2) ◽  
pp. 136-140
Author(s):  
N. MATSUMOTO ◽  
T. YAMAMOTO ◽  
M. SUGIMOTO ◽  
S. KUMAGAI ◽  
K. TAKEDA
Keyword(s):  
Magnetic Field ◽  
Heat Flux ◽  
Flux Distribution ◽  
Heat Flux Distribution ◽  
Ac Magnetic Field ◽  
Dc Arc

G0600-8-3 Theoretical study on heat flux distribution of driven arc by AC magnetic field

2010 ◽  
Vol 2010.3 (0) ◽  
pp. 205-206
Author(s):  
Naomi MATSUMOTO ◽  
Takeo YAMAMOTO ◽  
Masaya SUGIMOTO ◽  
Seiji KUMAGAI ◽  
Koichi TAKEDA ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Flux ◽  
Flux Distribution ◽  
Theoretical Study ◽  
Heat Flux Distribution ◽  
Ac Magnetic Field

scholarly journals Theoretical Consideration of Heat Flux Distribution of Arc Driven by AC Magnetic Field

2009 ◽  
Vol 49 (12) ◽  
pp. 1845-1849 ◽  
Author(s):  
Takeo Yamamoto ◽  
Naomi Matsumoto ◽  
Masaya Sugimoto ◽  
Seiichi Sudo ◽  
Takehiko Toh ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Flux ◽  
Theoretical Consideration ◽  
Flux Distribution ◽  
Heat Flux Distribution ◽  
Ac Magnetic Field

scholarly journals Heat Flux of a Transferred Arc Driven by a Transverse Magnetic Field

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
Naomi Matsumoto ◽  
Takashi Usami ◽  
Ikumi Kuno ◽  
Takeo Yamamoto ◽  
Masaya Sugimoto ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Flux ◽  
Theoretical Model ◽  
Magnetic Flux ◽  
Field Experiments ◽  
Transverse Magnetic ◽  
Magnetic Flux Density ◽  
Dc Magnetic Field ◽  
Transferred Arc ◽  
Theoretical Predictions

Theoretical consideration of a magnetically driven arc was performed to elucidate the variation of heat flux with an imposed DC magnetic field. Experiments were conducted to confirm the validity of the theoretical model. The heat flux decreased concomitantly with increased imposed magnetic flux density. Theoretical predictions agreed with experimental results.

Effect of Magnetic Fields on the Resistance and Microstructure of Al-Cu Alloy during Solidification Processing

2011 ◽  
Vol 287-290 ◽  
pp. 2916-2920
Author(s):  
Chun Yan Ban ◽  
Peng Qian ◽  
Xu Zhang ◽  
Qi Xian Ba ◽  
Jian Zhong Cui
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Turning Points ◽  
Probe Method ◽  
Solidification Processing ◽  
Ac Magnetic Field ◽  
Dc Magnetic Field ◽  
Cu Alloy ◽  
The Difference ◽  
Good Agreement

The resistance of Al-21%Cu alloy under no magnetic field, DC magnetic field and AC magnetic field from liquid to solid was measured by a four-probe method. The difference of resistance versus temperature curves (R-T curves) was analyzed. It is found that the R-T curves of Al-21%Cu alloy are monotone decreasing and have two obvious turning points. Under DC magnetic field, the liquidus and solidus temperatures of the alloy both decrease, while under AC magnetic field, the liquidus and solidus temperatures both increase. There is a good agreement between the microstructure of quenching sample and R-T curves. The mechanism of the effect of magnetic fields was discussed.

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