DMCA
1 Visualizing Edge-Conforming Discrete Field Quantities in Electromagnetic Field Problems with Interfaces
BibTeX
@MISC{Karch_1visualizing,
author = {G. K. Karch and F. Sadlo and H. Songoro and E. Gjonaj and T. Weil and T. Ertl},
title = {1 Visualizing Edge-Conforming Discrete Field Quantities in Electromagnetic Field Problems with Interfaces},
year = {}
}
Share
 |
 |
 |
 |
||
OpenURL
Abstract
Finite element-based electromagnetic field simulation strongly benefits from using edge-conforming representations of the electric field. In this paper we address the visualization of discrete field data resulting from such simulations on 10-node quadratic tetrahedral grids. The use of higher-order grids enables, on the one hand, the accurate approximation of curved interfaces between electromagnetic materials, and on the other hand, it allows for a more accurate computation of derived quantities such as Coulomb forces and related surface tensions. However, a major drawback so far has been the lack of appropriate visualization techniques—common visualization systems do not support this type of data—necessitating a resampling step with all the involved drawbacks, including artifacts in the form of imposed continuity across material boundaries. We introduce a visualization framework implemented as a set of ParaView plugins that evaluates edge-conforming data by means of vector basis functions. Based on this framework we present different visualization approaches for the investigation of the electric field at material boundaries. We demonstrate their utility using electro-hydrodynamics simulations of a water droplet on the surface of a high voltage insulator, representing a two-phase flow problem driven by strong electric fields.
Keyphrases
edge-conforming discrete field quantity electromagnetic field problem material boundary electric field involved drawback edge-conforming data related surface tension two-phase flow problem vector basis function curved interface accurate computation imposed continuity present different visualization approach finite element-based electromagnetic field simulation 10-node quadratic tetrahedral grid major drawback electro-hydrodynamics simulation resampling step derived quantity strong electric field high voltage insulator discrete field data higher-order grid enables accurate approximation edge-conforming representation water droplet electromagnetic material coulomb force visualization framework
