Research Catalog

Analysis of flow dynamics through small diameter gas sampling systems

Title
Analysis of flow dynamics through small diameter gas sampling systems / by Kenneth G. Brown, principal investigator.
Author
Brown, Kenneth G.
Publication
Norfolk, Virginia : Old Dominion University Research Foundation ; Hampton, Virginia : National Aeronautics and Space Administration, Langley Research Center, February 1984.

Details

Additional Authors
  • Old Dominion University. Research Foundation, author.
  • Langley Research Center, sponsoring body.
Description
1 microfiche (17 pages) : negative, illustrations; 11 x 15 cm.
Summary
"The removal of gas material through a capillary opening in a surface is analyzed. The gas, from which the sample is removed, is moving past the surface at supersonic velocities. A variety of possible conditions of temperature, pressure and composition are discussed in an effort to emulate conditions that might be found at the surface of a vehicle traversing the altitude range 100-50 km, or might exist at the surface of a model in the stream of a high enthalpy wind tunnel. Aspects discussed include (1) the throughput of the capillary for conditions of different lengths and different L a (length radius) ratios (2) the total throughput when the surface in question contains many hundreds of these capillaries (3) the effect of the capillaries upon the composition of the analyzed gas (4) the effect of the capillary or capillaries upon the gas stream itself and (5) the implications of the calculations upon the possible implementation of this type of device as an inlet for a mass spectrometer to be developed for analyzing the upper atmosphere."--NTIS
Series Statement
NASA-CR ; 175447
Uniform Title
NASA contractor report ; NASA CR-175447.
Subject
  • Upper atmosphere > Spectral analysis
  • Gas flow > Analysis
  • Mass spectrometers
  • Aerodynamics, Supersonic
  • Gas streams
  • Intake systems
  • Knudsen flow
  • Molecular flow
  • Capillary flow; Fluid dynamics; Gas analysis; Gas streams; Knudsen flow; Mass spectrometers; Flow velocity; Graphs (Charts); Inlet flow; Intake systems; Molecular flow; Upper atmosphere; Wind tunnel models
Note
  • "February 1984."
  • At head of title: Department of Chemical Sciences, School of Sciences and Health Professions, Old Dominion University, Norfolk, Virginia.
Bibliography (note)
  • Includes bibliographical references (page 17).
Type of Report (note)
  • Final report;
Funding (note)
  • Sponsored by the National Aeronautics and Space Administration, Langley Research Center
Call Number
GPO Microfiche NAS 1.26:175447
OCLC
marcive180877958
Author
Brown, Kenneth G., author.
Title
Analysis of flow dynamics through small diameter gas sampling systems / by Kenneth G. Brown, principal investigator.
Publisher
Norfolk, Virginia : Old Dominion University Research Foundation ; Hampton, Virginia : National Aeronautics and Space Administration, Langley Research Center, February 1984.
Type of Content
text
Type of Medium
microform
Type of Carrier
microfiche
Series
NASA-CR ; 175447
NASA contractor report ; NASA CR-175447.
Bibliography
Includes bibliographical references (page 17).
Type Of Report
Final report; July 1, 1983 to January 1, 1984.
Funding
Sponsored by the National Aeronautics and Space Administration, Langley Research Center NAS-1-17099 No. 22.
Indexed Term
Capillary flow; Fluid dynamics; Gas analysis; Gas streams; Knudsen flow; Mass spectrometers; Flow velocity; Graphs (Charts); Inlet flow; Intake systems; Molecular flow; Upper atmosphere; Wind tunnel models
Added Author
Old Dominion University. Research Foundation, author.
Langley Research Center, sponsoring body.
Other Form:
Print version: Brown, Kenneth G. Analysis of flow dynamics through small diameter gas sampling systems (OCoLC)16850818
Onlin version: Brown, Kenneth G. Analysis of flow dynamics through small diameter gas sampling systems (OCoLC)894047414
Gpo Item No.
0830-H-14 (MF)
Sudoc No.
NAS 1.26:175447
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