Accession Number : ADA627178


Title :   Boltzmann Transport in Hybrid PIC HET Modeling


Descriptive Note : Conference paper with briefing charts


Corporate Author : AIR FORCE RESEARCH LAB EDWARDS AFB CA ROCKET PROPULSION DIV


Personal Author(s) : Tran, Jonathan ; Qerushi, Artan ; Martin, Robert ; Koo, Justin


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a627178.pdf


Report Date : Jul 2015


Pagination or Media Count : 29


Abstract : Electron transport models are a key source of uncertainty inhibiting first-principal simulation of Hall-effect thruster (HET) physics. Fluid electron models depend heavily on the electron mobility tensor, generally constructed using semi-empirical relationships which require user-adjustable tuning parameters and are based on the assumption of an electron velocity distribution function in local thermal equilibrium. Recently, work in the field of gaseous electronics has produced a variety of self-consistent electron swarm codes, such as the Magboltz code, focused on directly solving the steady Boltzmann transport equation including both electromagnetic and collisional processes. In parallel, the community have also developed extensive electron collision databases that include detailed elastic and inelastic collision cross sections for electrons with various gases. In this work, we investigate whether Magboltz can reproduce experimentally observed mobility trends derived from HPHall, a workhorse hybrid-PIC HET simulation code.


Descriptors :   *ELECTRON TRANSPORT , *HALL THRUSTERS , GASEOUS ELECTRONICS , HALL EFFECT , PARTICLE IN CELL


Subject Categories : Operations Research
      Plasma Physics and Magnetohydrodynamics
      Electric and Ion Propulsion


Distribution Statement : APPROVED FOR PUBLIC RELEASE