期刊
ELECTRONICS
卷 11, 期 22, 页码 -出版社
MDPI
DOI: 10.3390/electronics11223725
关键词
microwave breakdown; subgridding FDTD; heterogeneous CPU-GPU acceleration; plasma
资金
- National Science Foundation of China (NSFC) [61901001, 61901004, U20A20164]
- National Science Foundation of Anhui Province [1908085QF259, GXXT-2021-027]
- State Key Laboratory of Millimeter Waves, Southeast University [K202230]
This paper proposes a numerical method based on finite-difference time-domain scheme to simulate the plasma formation process in high-power microwave devices, and efficiently accelerates the algorithm using heterogeneous computing technique. It provides an efficient method for investigating the phenomenon of high-power microwave air breakdown.
Microwave breakdown is crucial to the transmission of high-power microwave (HPM) devices, where a growing number of studies have analyzed the complex interactions between electromagnetic waves and the evolving plasma from theoretical and analytical perspectives. In this paper, we propose a finite-difference time-domain (FDTD) scheme to numerically solve Maxwell's equation, coupled with a fluid plasma equation for simulating the plasma formation during HPM air breakdown. A subgridding method is adopted to obtain accurate results with lower computational resources. Moreover, the three-dimensional subgridding Maxwell-plasma algorithm is efficiently accelerated by utilizing heterogeneous computing technique based on graphics processing units (GPUs) and multiple central processing units (CPUs), which can be applied as an efficient method for the investigation of the HPM air breakdown phenomena.
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