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Thermal scale modeling of radiation-conduction-convection systems.Investigation of thermal scale modeling applied to radiation-conduction-convection systems with particular emphasis on the spacecraft cabin atmosphere/cabin wall thermal interface. The 'modified material preservation,' 'temperature preservation,' 'scaling compromises,' and 'Nusselt number preservation' scale modeling techniques and their inherent limitations and problem areas are described. The compromised scaling techniques of mass flux preservation and heat transfer coefficient preservation show promise of giving adequate thermal similitude while preserving both gas and temperature in the scale model. The use of these compromised scaling techniques was experimentally demonstrated in tests of full scale and 1/4 scale models. Correlation of test results for free and forced convection under various test conditions shows the effectiveness of these scaling techniques. It is concluded that either mass flux or heat transfer coefficient preservation may result in adequate thermal similitude depending on the system to be modeled. Heat transfer coefficient preservation should give good thermal similitude for manned spacecraft scale modeling applications.
Document ID
19720041560
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shannon, R. L.
(Boeing Co. Seattle, Wash., United States)
Date Acquired
August 6, 2013
Publication Date
April 1, 1972
Subject Category
Thermodynamics And Combustion
Report/Patent Number
AIAA PAPER 72-288
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Thermophysics Conference
Location: San Antonio, TX
Start Date: April 10, 1972
End Date: April 12, 1972
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
72A25226
Funding Number(s)
CONTRACT_GRANT: NAS9-8332
Distribution Limits
Public
Copyright
Other

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