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Experimental and Numerical Investigation of Flow Properties of Supersonic Helium-Air JetsHeated high speed subsonic and supersonic jets operating on- or off-design are a source of noise that is not yet fully understood. Helium-air mixtures can be used in the correct ratio to simulate the total temperature ratio of heated air jets and hence have the potential to provide inexpensive and reliable flow and acoustic measurements. This study presents a combination of flow measurements of helium-air high speed jets and numerical simulations of similar helium-air mixture and heated air jets. Jets issuing from axisymmetric convergent and convergent-divergent nozzles are investigated, and the results show very strong similarity with heated air jet measurements found in the literature. This demonstrates the validity of simulating heated high speed jets with helium-air in the laboratory, together with the excellent agreement obtained in the presented data between the numerical predictions and the experiments. The very close match between the numerical and experimental data also validates the frozen chemistry model used in the numerical simulation.
Document ID
20100003381
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Miller, Steven A. E. (NASA Langley Research Center Hampton, VA, United States)
Veltin, Jeremy (Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
August 25, 2013
Publication Date
January 4, 2010
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
AIAA Paper 2010-471
LF99-9924
Meeting Information
Meeting: 48th AIAA Aerospace Sciences Meeting
Location: Orlando, FL
Country: United States
Start Date: January 4, 2010
End Date: January 7, 2010
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 984754.02.07.07.17.02
CONTRACT_GRANT: NNX07AC88A
Distribution Limits
Public
Copyright
Public Use Permitted.

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