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Prediction of recirculation zones in isothermal coaxial jet flows relevant to combustors

Author
Nallasamy, M.
Published
Apr 1, 1987.
Physical Description
1 electronic document
Online Version

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Summary
The characteristics of the recirculation zones in confined coaxial turbulent jets are investigated numerically employing the kappa - epsilon turbulence model. The geometrical arrangement corresponds to the experimental study of Owen (AIAA J. 1976) and the investigation is undertaken to provide information for isothermal flow relevant to combustor flows. For the first time, the shape, size, and location of the recirculation zones for the above experimental configuration are correctly predicted. The processes leading to the observed results are explained. Detailed comparisons of the prediction with measurements are made. It is shown that the recirculation zones are very sensitive to the central jet exit configuration and the velocity ratio of the jets.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19870011068.
Accession ID: 87N20501.
NASA-CR-4064.
NAS 1.26:4064.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15699747