Aims. The test-field method for computing turbulent transport coefficients from simulations of hydromagnetic flows is extended to the regime with a magnetohydrodynamic (MHD) background. Methods. A generalized set of test equations is derived using both the induction equation and a modified momentum equation. By employing an additional set of auxiliary equations, we obtain linear equations descr...

Interaction between local magnetization and conduction electrons is responsible for a variety of phenomena in magnetic materials. It has been recently shown that spin current and associated electric voltage can be induced by magnetization that depends on both time and space. This effect, called spinmotive force, provides for a powerful tool for exploring the dynamics and the nature of magnetic ...

Abstract This paper discussed the performance changes under a rated operation state and permanent magnet loss-of-field fault of 5KW synchronous motor (PMSM) in 200 mm shaftless rimless thruster. These key parameters include air gap flux density, back electromotive force, output torque, current magnetic field. Using these to analyze running provides reference for early diagnosis at simulation le...