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Performance of an asymmetric short annular diffuser with a nondiverging inner wall using suctionThe performance of a short highly asymmetric annular diffuser equipped with wall bleed (suction) capability was evaluated at nominal inlet Mach numbers of 0.188, 0.264, and 0.324 with the inlet pressure and temperature at near ambient values. The diffuser had an area ratio of 2.75 and a length- to inlet-height ratio of 1.6. Results show that the radial profiles of diffuser exit velocity could be controlled from a severely hub peaked to a slightly tip biased form by selective use of bleed. At the same time, other performance parameters were also improved. These results indicate the possible application of the diffuser bleed technique to control flow profiles to gas turbine combustors.
Document ID
19740010809
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Juhasz, A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
March 1, 1974
Subject Category
Fluid Mechanics
Report/Patent Number
E-7615
NASA-TN-D-7575
Accession Number
74N18922
Funding Number(s)
PROJECT: RTOP 501-24
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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