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CFD analyses of coolant channel flowfieldsThe flowfield characteristics in a rocket engine coolant channels are analyzed by means of a numerical model. The channels are characterized by large length to diameter ratios, high Reynolds numbers, and asymmetrical heating. At representative flow conditions, the channel length is approximately twice the hydraulic entrance length so fully developed conditions are reached. The supercritical hydrogen coolant introduces strong property variations that have a major influence on the developing flow and the resulting heat transfer. Comparisons of constant and variable property solutions show substantial differences. The density variation accelerates the fluid in the channels increasing the pressure drop without an accompanying increase in heat flux. Analyses of the inlet configuration suggest that side entry from a manifold can affect the development of the velocity profile because of vortices generated as the flow enters the channel.
Document ID
19930065718
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yagley, J. A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Feng, J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Merkle, Charles L.
(Pennsylvania State Univ. University Park, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 93-1830
Meeting Information
Meeting: AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit
Location: Monterey, CA
Country: United States
Start Date: June 28, 1993
End Date: June 30, 1993
Sponsors: ASEE, AIAA, ASME, SAE
Accession Number
93A49715
Funding Number(s)
CONTRACT_GRANT: NSF EEC-91-16806
CONTRACT_GRANT: NAS8-38861
Distribution Limits
Public
Copyright
Other

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