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Hybrid Fluid-PIC Modeling and Its Application in Laser Fusion
Hongbo CAI, Yupei XU, Peilin YAO, Enhao ZHANG, Hanxiao HUANG, Shaoping ZHU, Xiantu HE
Chinese Journal of Computational Physics    2023, 40 (2): 159-168.   DOI: 10.19596/j.cnki.1001-246x.8602
Abstract118)   HTML11)    PDF (6420KB)(1330)      

The influence of plasma effect on the shock wave and hydrodynamic instabilities is a widely concerned problem in the current research of laser fusion. However, due to the limitations of the numerical simulation methods, there is still a lack of research tools on this issue. In this work, a hybrid fluid PIC(particle-in-cell) simulation method is established tentatively. Electrons are described by a massless fluid, and multi-component ions are described by PIC method; The fluid motion is obtained by solving the equations of electro-magnetohydrodynamic, and the electromagnetic fields are obtained by solving Ohm's law and Faraday's law. Aiming at the plasma condition of laser fusion, we use hybrid fluid-PIC simulation to study the shock wave structure and its characteristics in high energy density conditions, and the influence of plasma effect on the evolution of hydrodynamic instabilities. Hybrid fluid-PIC physical modeling provides a new research method for studying the effect of plasma effect on shock wave and hydrodynamic instabilities under high energy density.

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