arXiv subjects

Lars Kielhorn

Publications and source records attributed to Lars Kielhorn.

3 recordsLinked to original sources

arXiv2025

CAD-Integrated Electrostatic Boundary Element Simulations with Non-Conforming Higher-Order Meshes

We present a design through analysis workflow that enables virtual prototyping of electric devices. A CAD plugin establishes the interaction between design and analysis, allowing the preparation of analysis models and the visualization of its results within the design environment. The simulations utilize a fast boundary element method (BEM) that allows for non-conforming and higher-order meshes. Our numerical experiments investigate the accuracy of the approach and its sensitivity to the initial CAD representation. Overall, the workflow enables a close link between design and analysis, where the non-conforming higher-order BEM approach provides accurate results and significantly simplifies the interaction.

cs.CE↗

arXiv2024

Reducing Meshing Requirements for Electrostatic Problems using a Galerkin Boundary Element Method

This work focuses on model preparation for electrostatic simulations of CAD designs to realize a rapid virtual prototyping concept. We present a boundary element method (BEM) allowing discontinuous fields between surfaces. The corresponding edges of the CAD model are enhanced with the data required to integrate over non-conforming elements. Finally, we generate a mesh for each CAD surface. The approach is verified via numerical experiments and shows excellent agreement with conforming BEM results.

cs.CE↗

arXiv2016

Simulation of electrical machines - A FEM-BEM coupling scheme

Electrical machines commonly consist of moving and stationary parts. The field simulation of such devices can be very demanding if the underlying numerical scheme is solely based on a domain discretization, such as in case of the Finite Element Method (FEM). Here, a coupling scheme based on FEM together with Boundary Element Methods (BEM) is presented that neither hinges on re-meshing techniques nor deals with a special treatment of sliding interfaces. While the numerics are certainly more involved the reward is obvious: The modeling costs decrease and the application engineer is provided with an easy-to-use, versatile, and accurate simulation tool.

cs.CE↗