Dynamic Mode Decomposition Reduced-Order Models for Multiscale Kinetic Plasma Analysis

Indranil Nayak, Fernando Teixeira

Abstract: We demonstrate the efficacy of dynamic mode decomposition (DMD) based reduced-order model (ROM) in characterizing the transient behavior of full-order kinetic plasma simulation. The full-order kinetic plasma model makes use of the finite-element time-domain (FETD) based electromagnetic particle-in-cell (EM-PIC) algorithm. We apply the suggested reduced-order method for the case of an expanding plasma ball and study the effect of DMD reconstructed self fields on the particle dynamics in transient region. Such analysis is highly desirable for understanding underlying physics of complex plasmas as well as for reducing computation cost of high-fidelity plasma simulations.