Time-Domain Finite Element Analysis of Nonlinear Breakdown Problems in High-Power-Microwave Devices and Systems
Technical Report,24 Sep 2014,24 Nov 2015
University of Illinois Urbana United States
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This final report describes the effort to develop a highly accurate and efficient simulation tool for the multi-physics and multiscale modeling and simulation of the electromagnetic-plasma interaction and the high-power microwave breakdown in air. Under the high pressure and high frequency condition of the high-power air breakdown, the physical phenomenon is described using a nonlinearly coupled full-wave Maxwell and fluid plasma system. This nonlinear system is then solved by a numerical method that is uniformly high order in both space and time. Accurate and efficient numerical simulation methods and techniques are introduced, developed, and validated. Several numerical examples are given to demonstrate the capability of the numerical method in the modeling and simulation of the high-power microwave air breakdown problems, where the underlining physical process can be well understood and interpreted from the simulation results.