A GPU-accelerated finite-difference time-domain scheme for electromagnetic wave interaction with plasma

Cannon, Patrick and Honary, Farideh (2015) A GPU-accelerated finite-difference time-domain scheme for electromagnetic wave interaction with plasma. IEEE Transactions on Antennas and Propagation, 63 (7). pp. 3042-3054.

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Abstract

A GPU-accelerated Finite-Difference Time-Domain (FDTD) scheme for the simulation of radio-frequency (RF) wave propagation in a dynamic, magnetized plasma is presented. This work builds on well-established FDTD techniques with the inclusion of new time advancement equations for the plasma fluid density and temperature. The resulting FDTD formulation is suitable for the simulation of the time-dependent behaviour of an ionospheric plasma due to interaction with an RF wave and the excitation of plasma waves and instabilities. The stability criteria and the dependence of accuracy on the choice of simulation parameters are analyzed and found to depend on the choice of simulation grid parameters. It is demonstrated that accelerating the FDTD code using GPU technology yields significantly higher performance, with a dual-GPU implementation achieving a rate of node update almost two orders of magnitude faster than a serial implementation. Optimization techniques such as memory coalescence are demonstrated to have a significant effect on code performance. The results of numerical tests performed to validate the FDTD scheme are presented, with a good agreement achieved when the simulation results are compared to both the predictions of plasma theory and to the results of the Tech-X® VORPAL 4.2.2 software that was used as a benchmark.

Item Type: Journal Article
Journal or Publication Title: IEEE Transactions on Antennas and Propagation
Additional Information: ©2015 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 73838
Deposited By: ep_importer_pure
Deposited On: 15 Jul 2015 07:57
Refereed?: Yes
Published?: Published
Last Modified: 21 Feb 2020 02:31
URI: https://eprints.lancs.ac.uk/id/eprint/73838

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