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Experimental study of cross flow mixing in cylindrical and rectangular ductsAn experimental investigation of non-reacting cross flow jet injection and mixing in cylindrical and rectangular ducts has been conducted with application to a low emissions combustor. Quantitative measurement of injectant concentration distributions perpendicular to the duct axis were obtained by planar digital imaging of the Mie-scattered light from an aerosol seed mixed with the injectant. The flowfield unmixedness was evaluated using (1) a mixing parameter derived from the ratio of the jet concentration fluctuations to the fully mixed concentration, and (2) probability density functions of the concentration distributions. Mixing rate was measured for 45 degree slant slot and round orifice injectors.
Document ID
19930018491
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Liscinsky, D. S. (United Technologies Research Center East Hartford, CT, United States)
Vranos, A. (AB Research Associates South Windsor, CT., United States)
Lohmann, R. P. (Pratt and Whitney Aircraft East Hartford, CT., United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1993
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA-CR-187141
NAS 1.26:187141
E-7708
Accession Number
93N27680
Funding Number(s)
CONTRACT_GRANT: NAS3-25952
PROJECT: RTOP 537-02-20
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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