Comparisons of Hydrogen Atom Measurements in an Arcjet Plume with DSMC Predictions

Abstract

We present comparisons between hydrogen atom number density, velocity, and temperature measurements with DSMC predictions at nozzle exit for two power levels of a hydrogen arcjet thruster: 1.34 kW and 800 W. Comparisons between model and experiment are also presented in two downstream plume regions. Atomic density peaks at each power are not seen to vary substantially while velocity and temperature maximums decrease with lower-power operation. Changes in profile shapes are noticed at the different powers and similar profile changes are also observed in the model predictions. Differences in overall magnitude are observed at some locations between measured data and predicted results, but in general the model matches the measured data quite well.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1996
Accession Number
ADA436555

Entities

People

  • Ingrid J. Wysong
  • Jeffrey A. Pobst

Organizations

  • Cornell University College of Engineering

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Reactions
  • Computational Fluid Dynamics
  • Computational Science
  • Detection
  • Dye Lasers
  • Energy Transfer
  • Experimental Data
  • Fluid Dynamics
  • Fluid Mechanics
  • Ground State
  • High Temperature
  • Ionization
  • Laser Beams
  • Laser Induced Fluorescence
  • Lasers
  • Measurement
  • Monte Carlo Method

Fields of Study

  • Physics

Readers

  • Aerospace Propulsion Engineering.
  • Computational Modeling and Simulation
  • Materials Science and Engineering.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster