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Atomization and combustion properties of flashing injectorsFlashing injection involves expanding a fluid through an injector until a supersaturated state is reached, causing a portion of the fluid to flash to a vapor. This investigation considered the flow, atomization and spreading properties of flashing injectors flowing liquids containing dissolved gases (Jet A/air) as well as superheated liquids (Freon 11). The use of a two stage expansion process, separated by an expansion chamber, was found to be beneficial for good atomization properties of flashing injection - particularly for dissolved gas systems. Both locally homogeneous and separated flow models provided good predictions of injector flow properties. Conventional correlations for drop sizes from pressure atomized and airblast injectors were successfully modified, using the separated flow model to prescribe injector exit conditions, to correlate drop size measurements. Additional experimental results are provided for spray angle and combustion properties of sprays from flashing injectors.
Document ID
19820034345
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Solomon, A. S. P.
(Pennsylvania State Univ. University Park, PA, United States)
Rupprecht, S. D.
(Pennsylvania State University University Park; Westinghouse Research Laboratories, Monroeville, PA, United States)
Chen, L.-D.
(Pennsylvania State Univ. University Park, PA, United States)
Faeth, G. M.
(Pennsylvania State University University Park, PA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 82-0300
Meeting Information
Meeting: Aerospace Sciences Meeting
Location: Orlando, FL
Start Date: January 11, 1982
End Date: January 14, 1982
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
82A17880
Funding Number(s)
CONTRACT_GRANT: NSG-3306
Distribution Limits
Public
Copyright
Other

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