Numerical Prediction of UV Radiation from Two-Phase Plumes at High Altitudes (Preprint)

Abstract

A multi-step continuum-kinetic approach is used to model a steady state plume flow from a Star 27 motor at an altitude of 188 km. Two-way coupled Navier-Stokes equations and the DSMC method are used to predict the interaction between plume and atmospheric gases and micron-sized alumina particles from the thruster. A Monte Carlo radiation code that accounts for photon scattering on particles is used to calculate UV radiation based on the obtained flowfield solutions. Comparison of computed spectral and integral radiant intensity with available flight data is performed. Photon scattering by submicron particles in the 200 nm to 400 nm range was found to be a dominant process in the far field UV emission.

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Document Details

Document Type
Technical Report
Publication Date
Aug 27, 2007
Accession Number
ADA480813

Entities

People

  • James G. Reuster
  • Natalia E. Gimelshein
  • Robert B. Lyons
  • Sergey F. Gimelshein

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Altitude
  • Combustion
  • Computational Fluid Dynamics
  • Equations
  • Gas Flow
  • Mechanical Engineering
  • Military Research
  • Monte Carlo Method
  • Navier Stokes Equations
  • Propulsion Systems
  • Radiant Intensity
  • Radiation
  • Rocket Engines
  • Rocket Propulsion
  • Scattering
  • Thrusters

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Computational Fluid Dynamics (CFD)
  • Solar Physics

Technology Areas

  • Space
  • Space - Hall-Effect Thruster