Title :
Improvement of convergence characteristic of ICCG method for the A-φ method using edge elements
Author :
Fujiwara, Koji ; Nakata, Takayoshi ; Ohashi, Hiromitsu
Author_Institution :
Dept. of Electr. & Electron. Eng., Okayama Univ., Japan
fDate :
5/1/1996 12:00:00 AM
Abstract :
The effect of the scalar potential φ in the A-φ method on the convergence characteristic of the incomplete Cholesky conjugate gradient (ICCG) method using the edge element is investigated. Several 3-D eddy current models are analyzed both by taking into account φ and neglecting φ to compare the convergence characteristics. It is illustrated that the CPU time using φ is less than ½ of that neglecting φ, and there are some models in which the use of φ enables us to obtain convergent solutions
Keywords :
computational complexity; conjugate gradient methods; convergence of numerical methods; eddy currents; electrical engineering; electrical engineering computing; finite element analysis; 3D eddy current models; A-φ method; CPU time; ICCG method; convergence characteristics; edge elements; incomplete Cholesky conjugate gradient; scalar potential; Convergence; Eddy currents; Equations; Frequency; Magnetic analysis; Magnetic materials; Magnetic separation; Shape; Steady-state; Vectors;
Journal_Title :
Magnetics, IEEE Transactions on
