11 papers
Simplification of the Isotropic Generalized Stop-Type Prandtl-Ishlinskii Vector Hysteresis Operator Using Analytical Return-Point Mapping
Arvinth Shankar, Klaus Kuhnen, Iryna Kulchytska-Ruchka +1
While the thermodynamically formulated generalized Prandtl-Ishlinskii stop-type operator effectively captures hysteresis nonlinearities, it requires a local iterative procedure to…
Accelerating Industrial Finite Element Simulations of Electric Machines based on Runtime Analysis
Arvinth Shankar, Iryna Kulchytska-Ruchka, Sebastian Schöps
The simulation of electric machines plays a significant role in the design of efficient and competitive products. Faster simulations reduce computational costs, such as CPU hours,…
Parallel-in-Time Solution of Eddy Current Problems Using Implicit and Explicit Time-stepping Methods
Idoia Cortes Garcia, Iryna Kulchytska-Ruchka, Markus Clemens +1
The time domain analysis of eddy current problems often requires the simulation of long time intervals, e.g. until a steady state is reached. Fast-switching excitations e.g. in pul…
Parallel-in-Time Simulation of Power Converters Using Multirate PDEs
Andreas Pels, Iryna Kulchytska-Ruchka, Sebastian Schöps
This paper presents an efficient numerical algorithm for the simulation of pulse-width modulated power converters via parallelization in time domain. The method applies the multira…
Finite-Element Simulation of an Accelerator Magnet: an Exercise
H. De Gersem, I. Kulchytska-Ruchka, S. Schöps
This note describes an extended exercise on the finite-element (FE) simulation of an accelerator magnet. The students construct and simulate a magnet model using the FEMM freeware.…
Towards a Parallel-in-Time Calculation of Time-Periodic Solutions with Unknown Period
Iryna Kulchytska-Ruchka, Sebastian Schöps
This paper presents a novel parallel-in-time algorithm able to compute time-periodic solutions of problems where the period is not given. Exploiting the idea of the multiple shooti…