Running a 3D electrostatic solution: mesh generation and solution

This article is part of the continuing online course, Electric and magnetic field calculations with finite-element methods. This article continues an example 3D electrostatic solution. The previous article introduced the concept of mesh Parts and Regions. The emphasis was on input from 3D CAD programs via STL files. Here, we’ll consider how MetaMesh uses the STL [...]

Running a 3D electrostatic solution: STL input

This article is part of the continuing online course, Electric and magnetic field calculations with finite-element methods. As in the introduction to the 3D software, we’ll run through a complete field solution for a sophisticated gun designed at the Lawrence Livermore National Laboratory to generate sheet electron beams . We’ll use prepared input files — later articles [...]

Adding 3D software

With a good background in 2D finite-element solutions, it’s time to advance to the more challenging and sophisticated task of full 3D electrostatic and magnetostatic field calculations. In this article (the twelth in the online course Electric and magnetic field calculations with finite-element methods), we’ll make two assumptions:

You purchased or requested a trial of HiPhi, our [...]

Magnetostatic solutions: permanent magnets

As the final topic in two-dimensional magnetostatics, we’ll consider solutions with permanent magnets. To start, it’s useful to review how permanent magnets work. Introductory electromagnetic texts often don’t treat the topic, and the explanations in many specialized references are overly complex.

The electrons of many atoms carry a circulating current, like a small current loop. Such an [...]

Magnetostatic solutions: when steel gets complicated

Material properties are the reason why magnetostatic solutions are generally more involved than electrostatic solutions. Dielectrics can usually be characterized by a single value of relative dielectric constant εr up to the point where they break down. On the other hand, magnetic materials do interesting things even at normal values of flux density B:

Magnet steels may exhibit [...]