Scaling relations for eddy current phenomena

Technical Report · Fri Oct 31 23:00:00 EST 1975

DOI:https://doi.org/10.2172/4155082· OSTI ID:4155082

Dodd, C V; Deeds, W E

Formulas are given for various electromagnetic quantities for coils in the presence of conductors, with the scaling parameters factored out so that small-scale model experiments can be related to large-scale apparatus. Particular emphasis is given to such quantities as eddy current heating, forces, power, and induced magnetic fields. For axially symmetric problems, closed-form integrals are available for the vector potential and all the other quantities obtainable from it. For unsymmetrical problems, a three-dimensional relaxation program can be used to obtain the vector potential and then the derivable quantities. Data on experimental measurements are given to verify the validity of the scaling laws for forces, inductances, and impedances. Indirectly these also support the validity of the scaling of the vector potential and all of the other quantities obtained from it. (auth)

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-33-007121
• OSTI ID: 4155082
• Report Number(s): ORNL--5077
• Country of Publication: United States
• Language: English

Related Subjects

*MAGNET COILS-- EDDY CURRENTS
700202* --Fusion Energy--Fusion Power Plant Technology-- Magnet Coils & Fields
IMPEDANCE
MAGNETIC FIELDS
N70800* --Physics--Controlled Thermonuclear Research-- Thermonuclear Engineering & Equipment
RELAXATION
SCALING LAWS
THREE-DIMENSIONAL CALCULATIONS