Hybrid Simulation of Interaction Between Airflow and Plasma Induced by Electron Beam

摘要

A 2-D hybrid numerical model has been developed to simulate the process of interaction between large-volume electron-beam (EB)-generated plasmas and the airflow. High-energy electrons are simulated by means of Monte Carlo numerical method. Low-energy electrons and the ion species excited by collisions are considered by fluid model and simulated by finite-element method. It was shown that the airflow can affect the space distribution of low-energy electron density by the convection and transport of ion species. And the influence of the EB on the airflow field is relatively small. The velocity field of the far-field airflow is disturbed below 1%. But the EBs have important effects on the property of boundary zones and the turbulent intensity of the fluid field.