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Effects of Inlet Flow Conditions on Crossflow Jet MixingAn experimental investigation of the effects of mainstream turbulence, mainstream swirl and non-symmetric mass addition has been conducted for the isothermal mixing of multiple jets injected into a confined rectangular crossflow. Jet penetration and mixing in the near field was studied using planar Mie scattering to measure time-averaged mixture fraction distributions. Orifice configurations were used that were optimized for mixing performance based on previous experimental and computational results for a homogeneous approach flow. Mixing effectiveness, determined using a spatial unmixedness parameter based on the variance of the mean jet concentration distributions, was found to be minimally affected by free-stream turbulence but significantly influenced by the addition of swirl to the mainstream. The results for non-symmetric mass addition indicate that the concentration distribution of the flowfield can be tailored if desired.
Document ID
19960049849
Document Type
Conference Paper
Authors
Liscinsky, D. S. (United Technologies Corp. East Hartford, CT United States)
True, B. (United Technologies Corp. East Hartford, CT United States)
Holdeman, J. D. (NASA Lewis Research Center Cleveland,OH United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1996
Subject Category
Aircraft Propulsion and Power
Report/Patent Number
NASA-TM-107258
NAS 1.15:107258
AIAA Paper 96-2881
E-10319
Meeting Information
Joint Propulsion Conference(Lake Buena Vista, FL)
Funding Number(s)
PROJECT: RTOP 537-02-20
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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