Accession Number:

ADA454716

Title:

A Study of Particle Collisions in Electric Propulsion Plasma Plumes

Descriptive Note:

Technical Paper Preprint

Corporate Author:

AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE

Report Date:

2006-07-12

Pagination or Media Count:

9.0

Abstract:

All numerical simulations have some inherent error associated with the results but minimizing the error may also maximize the processing time of the simulation. The particle collision model used for this paper is Monte Carlo Collisions. The results of the simulations were compared to a vacuum tank experiment conducted at the Air Force Research Laboratory. The results were compared for simulations with and without collisions using different neutral densities and levels of complexity for particle collisions. The effect of particle collisions is evident in the results of the simulations. Increasing the neutral density of the simulation does not have a major impact on the results in the plume region. Outside the plume region the particle collisions can affect the results by an order of magnitude or greater.

Subject Categories:

  • Particle Accelerators
  • Electric and Ion Propulsion

Distribution Statement:

APPROVED FOR PUBLIC RELEASE