Topic
Computational electromagnetics
About: Computational electromagnetics is a research topic. Over the lifetime, 6412 publications have been published within this topic receiving 113727 citations. The topic is also known as: Electromagnetic field analysis.
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TL;DR: This paper combines and extends two of the previous works to provide a more complete solution for the GPU acceleration of the Method of Moments, using CUDA by NVIDIA, and serves as a guide for the implementation of other GPU-accelerated computational electromagnetic routines.
Abstract: In this paper, we combine and extend two of our previous works to provide a more complete solution for the GPU acceleration of the Method of Moments, using CUDA by NVIDIA. To this end, the formulations of the original 1982 Rao-Wilton-Glisson paper are revisited, and the scattering analysis of a square PEC plate is considered as a simple example. One of the primary contributions of the paper is to serve as a guide for the implementation of other GPU-accelerated computational electromagnetic routines. As such, this provides a background on general-purpose GPU computation, as well as insight into the finer details of the implementation. The results computed compared well with reference values. From a performance point of view, the GPU implementation was found to be significantly faster. The fastest measured speedup for one of the phases of the Method of Moments computations was more than a factor of 140. This translated into a speedup of about a factor of 45, when the entire Method of Moments solution process for the problem was considered.
64 citations
TL;DR: In this paper, the authors presented a hybrid method which combines the most attractive features of the low and high-frequency techniques for the modeling of engine cavities, where the finite-difference time-domain (FDTD) method was applied to the small region surrounding the termination and the remainder of the cavity was modeled with ray methods.
Abstract: The electromagnetic modeling of engine cavities is a very difficult task because the electrical size of the cavity is very large, while the engine termination is geometrically complex. High-frequency techniques can adequately model the cavity, but perform poorly when applied to the termination. Low-frequency techniques are currently infeasible for such large geometries because of the large memory and computation time requirements. The authors present a hybrid method which combines the most attractive features of the lowand high-frequency techniques. The finite-difference time-domain (FDTD) method is applied to the small region surrounding the termination. The remainder of the cavity is modeled with ray methods. To validate this method, they consider two-dimensional cavities with complex terminations. Their results are compared against those found from a hybrid combination of the modal method and the method of moments. >
63 citations
TL;DR: In this paper, the results of computer codes on the basis of such methods have to be validated, and some of the respective possibilities are addressed, as well as some of their respective possibilities for verification.
Abstract: Much progress has been made in the use of computational electromagnetics for the analysis of electromagnetic compatibility (EMC) problems during recent years. This paper reviews the improvements in some of the most important techniques of the field: the method of moments, the finite-difference time-domain method, the finite-element method, the transmission-line matrix method, and the partial-element equivalent-circuit method. The results of computer codes on the basis of such methods have to be validated, and some of the respective possibilities are addressed.
63 citations
TL;DR: In this article, a finite element (FE) self-adaptive hp goal-oriented algorithm for elliptic problems is presented, which delivers (without any user interaction) a sequence of optimal hp-grids.
Abstract: We describe the development and application of a finite element (FE) self-adaptive hp goal-oriented algorithm for elliptic problems. The algorithm delivers (without any user interaction) a sequence of optimal hp-grids. This sequence of grids minimizes the error of a prescribed quantity of interest with respect to the problem size. The refinement strategy is an extension of a fully automatic, energy-norm based, hp-adaptive algorithm.
We illustrate the efficiency of the method with 2D numerical results. Among other problems, we apply the goal-oriented hp-adaptive strategy to simulate direct current (DC) resistivity logging instruments (including through casing resistivity tools) in a borehole environment and for the assessment of rock formation properties. Copyright © 2005 John Wiley & Sons, Ltd.
62 citations
TL;DR: In this article, a new technique for interfacing electrical machine models with electromagnetic transients programs is presented, which does not require a Thevenin equivalent circuit of the electrical network.
Abstract: A new technique is presented for interfacing electrical machine models with electromagnetic transients programs. The machine models with their associated controls, loads or turbines can be assembled as subroutines by the user and interfaced to the electrical network or other machine models directly. The machine models employ the standard state variable equations and may use any integration technique for solution. The technique does not require a Thevenin equivalent circuit of the electrical network.
62 citations