10 papers
Simulation Study of Coupling Effects Between a Hall Thruster and a Power Processing Unit
Zirui Fan, Yinjian Zhao, Jingjing Li +4
The complex and nonlinear load characteristics of Hall thrusters remain a key challenge in the design of propulsion power-supply output stages. In existing power-supply simu-lation…
Semi-local Floquet theory for active azimuthal magnetic modulation of Hall-thruster high-frequency instabilities
Yinjian Zhao, Changzheng Hu
We develop a semi-local Floquet model to screen active azimuthal magnetic modulation as a control approach for high-frequency drift instabilities in Hall thrusters. The uniform-fie…
Test Particle Study of EDI Driven Electron Transport in a Hall Thruster Using PIC Derived Electric Fields
Zhongping Zhao, Kunpeng Zhong, Yinjian Zhao
Electron transport in a Hall thruster is investigated at the test particle level using prescribed electric fields derived from the electron drift instability (EDI) resolving three…
Free-Molecular Face-Flux Preprocessing for Reduced Neutral-Continuity Modeling in Hall Thrusters: Particle-Based Reference and Deterministic SN-DFEM Realization
Yingjie Chen, Xi Chen, Yinjian Zhao
Neutral gas transport directly affects the ionization source, propellant utilization, and low-frequency discharge oscillations in Hall thrusters. High-fidelity particle-based neutr…
Conservative Charge and Current Deposition on Nonuniform 3D Cylindrical PIC Meshes with Residual Self-Field Diagnostics
Zhe Liu, Zhijun Zhou, Yinjian Zhao
Particle-in-cell simulations on nonuniform cylindrical meshes require deposition schemes that respect cylindrical metrics while controlling numerical self-fields. This work develop…
Full-gap kinetic limitation of thermionic-electron transport for electron transpiration cooling
Wushun Zhang, Weixing Zhou, Yinjian Zhao
Electron transpiration cooling (ETC) can reduce aerothermal loads on sharp hypersonic leading edges, but its performance is governed by whether thermionically emitted electrons esc…
An Electromagnetic Particle-Particle Method for Relativistic Electron Bunch Dynamics from Early Expansion to Long-Range Transport
Yinjian Zhao, Yibo Liang, Yanan Zhang +2
Particle-mesh methods, such as the particle-in-cell (PIC) method, cannot retain exact pairwise interaction at sub-cell scales. For dense nonneutral relativistic electron bunches, t…
A Fully Electromagnetic Hybrid PIC-Fluid Model for Predictive Fusion Neutron Yield in Dense Plasma Focus
Yinjian Zhao, Zhe Liu, Qiang Sun +2
While magnetic confinement fusion (MCF) and inertial confinement fusion (ICF) remain the primary routes toward controlled fusion, progress is still constrained by energy loss, plas…
An Electromagnetic Particle-Particle Model on Solving Relativistic Binary Collision
Yanan Zhang, Xiaochun Ma, Hui Liu +1
With the significant advancements in parallel computing techniques, the particle-particle (PP) model has been effectively utilized in various plasma-related applications. However,…
Comparison between electrostatic PP and PIC simulations on electron bunch expansion
Yanan Zhang, Xiaochun Ma, Hui Liu +1
With the great development of parallel computing techniques, the particle-particle (PP) model has been successfully applied in a number of plasma applications. Comparing to particl…