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Performance characteristics of two annular dump diffusers using suction-stabilized vortex flow controlThe two diffusers employed in the investigation had the same overall area ratio but different prediffuser area ratios and suction slot geometries. Velocity profile and diffuser pressure recovery performance data were obtained at ambient pressure and temperature, with inlet Mach numbers ranging from 0.18 to 0.41 and suction rate varying from zero to 18% of total inlet mass flow rate. On the basis of the reported investigation it is concluded that suction stabilized vortex flow diffusers show promise for application in combustors because of relatively high static pressure recovery and low total pressure loss obtained in a short length. Performance obtained using a narrow angle (7 degree) prediffuser was superior to that obtained with a prediffuser having a 14 degree included angle.
Document ID
19780061522
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Juhasz, A. J.
(NASA Lewis Research Center Cleveland, OH, United States)
Smith, J. M.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1978
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: Joint Symposium on Design and Operation of Fluid Machinery
Location: Fort Collins, CO
Country: US
Start Date: June 12, 1978
End Date: June 14, 1978
Sponsors: ASME, ASCE, International Association for Hydraulic Research
Accession Number
78A45431
Distribution Limits
Public
Copyright
Other

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