3 papers
cs.CE2026
Estimation of Condition Number of Quasi-static Darwin Model
Shingo Hiruma, Takeshi Mifune, Tetsuji Matsuo
This study discusses the estimation of the condition number of the quasi-static Darwin model, which is shown to be a nearly singular system of equations with a large kernel derived…
cs.CE2026
Electro-Magnetic Decoupling Preconditioner for Eddy Current Problems with External Circuit Coupling
Shingo Hiruma, Takeshi Mifune, Tetsuji Matsuo
This paper proposes an efficient and scalable preconditioning strategy for eddy current problems involving coupled external circuits. The approach, named Electro-Magnetic Decouplin…
math.NA2022
Convergence Acceleration of Preconditioned CG Solver Based on Error Vector Sampling for a Sequence of Linear Systems
Takeshi Iwashita, Kota Ikehara, Takeshi Fukaya +1
In this paper, we focus on solving a sequence of linear systems with an identical (or similar) coefficient matrix. For this type of problems, we investigate the subspace correction…