SOME NOTES ON CURRENT TUBE TYPES

1953 ◽  
Author(s):  
H. B. FROST
Keyword(s):  
Current Tube

Effects of a Transverse Magnetic Field on a Constricted Electric Arc

1975 ◽  
Vol 97 (2) ◽  
pp. 267-273 ◽  
Author(s):  
F. W. Ahrens ◽  
H. N. Powell
Keyword(s):  
Magnetic Field ◽  
Transverse Magnetic ◽  
Electric Arc ◽  
Temperature Fields ◽  
Viscous Force ◽  
Tube Radius ◽  
Current Tube ◽  
Two Dimensional Flow ◽  
Current Characteristics ◽  
A Current

The interaction of a constricted electric arc (argon at 1 atm) with an applied perpendicular magnetic field has been investigated analytically. The resulting (two-dimensional) flow and temperature fields, conductive and radiative wall heat transfer, and voltage-current characteristics of the arc are predicted. Three characteristic parameters are isolated: (I/a = current/tube radius), (Re = Lorentz and viscous force parameter), (RT = radiation parameter). When radiation is negligible, the first two are sufficient to scale the effects of any combination of current, tube radius, and applied magnetic field strength. A twin vortex flow pattern is predicted, with the displacement of the vortex “eyes” greatest for high applied magnetic fields and low currents. Comparisons with experimental results from the literature are good to satisfactory.

Remote field eddy current tube inspection using giant magneto-resistance sensors

2014 ◽  
Vol 1 (3) ◽  
pp. 167
Author(s):  
Dario Jerónimo Pasadas ◽  
A. Lopes Ribeiro ◽  
Tiago Jorge Rocha ◽  
Helena Maria Geirinhas Ramos
Keyword(s):  
Eddy Current ◽  
Current Tube ◽  
Magneto Resistance
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