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Comparison of Computational Results with a Low-g, Nitrogen Slosh and Boiling ExperimentThis paper compares a fluid/thermal simulation, in Fluent, with a low-g, nitrogen slosh and boiling experiment. In 2010, the French Space Agency, CNES, performed cryogenic nitrogen experiments in a low-g aircraft campaign. From one parabolic flight, a low-g interval was simulated that focuses on low-g motion of nitrogen liquid and vapor with significant condensation, evaporation, and boiling. The computational results are compared with high-speed video, pressure data, heat transfer, and temperature data from sensors on the axis of the cylindrically shaped tank. These experimental and computational results compare favorably. The initial temperature stratification is in good agreement, and the two-phase fluid motion is qualitatively captured. Temperature data is matched except that the temperature sensors are unable to capture fast temperature transients when the sensors move from wet to dry (liquid to vapor) operation. Pressure evolution is approximately captured, but condensation and evaporation rate modeling and prediction need further theoretical analysis.
Document ID
20150018267
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Stewart, Mark E.
(Vantage Partners, LLC Brook Park, OH, United States)
Moder, Jeffrey P.
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 24, 2015
Publication Date
July 27, 2015
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
GRC-E-DAA-TN24538
Meeting Information
Meeting: AIAA/SAE/ASEE Joint Propulsion Conference
Location: Orlando, FL
Country: United States
Start Date: July 27, 2015
End Date: July 29, 2015
Sponsors: American Society for Electrical Engineers, American Inst. of Aeronautics and Astronautics, Society of Automotive Engineers, Inc.
Funding Number(s)
CONTRACT_GRANT: NNC12BA01B
WBS: WBS 448887.04.03
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Cryogenic Fluid Storage
Boiling---Phase Transformations
Computational Fluid Dynamics
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