SOLUTION OF TEAM BENCHMARK PROBLEM #9 (Handling Velocity Effects with Variable Conductivity)

摘要

Users often raise the question of whether it is possible to analyze eddy current problems with velocity effects within codes that are not programmed to account for movement. This paper looks at a technique for applying a conventional boundary element technique to the analysis of a velocity induced eddy current by altering the conductivity of the conducting medium as a function of position. Results of the predicted B fields for v=0 m/s and v=10 m/s are compared to the analytical solution of a coil traveling axially down the center of a conducting tube. Good agreement is achieved; further refinement could be realized by iterating on conductivity if necessary. [Vol. 8, No. 2 (1993), Special Section in Team Benchmark Problem Solutions, pp 232-243]