GUMRAP: A Computer Program for Analyzing Molecular Flow in Complex Enclosures

Abstract

The General Unwanted Energy Rejection Analysis Program (GUERAP), which uses a Monte Carlo ray trace technique to analyze complex optical systems, has been in use for a number of years. This report describes the development of a molecular ray trace computer code (GUMRAP) based upon the extensive geometric and Monte Carlo ray trace portion of GUERAP. Portions of GUERAP strictly concerned with radiation such as diffraction, refraction, and internal radiation have been removed, and a new gas-surface interaction subroutine REFLCT, based upon the reciprocity relation, has been included. A detailed description of the input variables is given, as is a listing of control cards so that GUMRAP can be run on an IBM 370/165 computer by anyone desiring to analyze the molecular flow in complex systems such as space chambers.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1980
Accession Number
ADA080917

Entities

People

  • Max Kinslow

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Complex Systems
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Diffraction
  • Engineering
  • Equations
  • Gas Surface Interactions
  • Geometry
  • Procedures (Computers)
  • Radiation
  • Scattering
  • Spatial Distribution
  • Surface Properties
  • Surface Temperature
  • United States

Fields of Study

  • Physics

Readers

  • Aerial Unmanned Vehicle Swarm Micro Periodontal Dentistry.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Systems Analysis and Design

Technology Areas

  • Space