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The Flowfield Characteristics of a Mach 2 Diamond JetThe potential for using a novel diamond-shaped nozzle which may allow for superior mixing characteristics of supersonic jets without significant thrust losses is explored. The results of flow visualization and pressure measurements indicate the presence of distinct structures in the shear layers, not normally observed in shear layers of axisymmetric and rectangular jets. As characteristics of these features suggests that they are a manifestation of significant streamwise vorticity in the shear layers. Despite the distinct nature of the flowfield structure of the present shear layer, the global growth rates of this shear layer were found to be very similar to its two-dimensional and axisymmetric counterparts. These and other observations suggest that the presence of streamwise vorticity may not play a significant role in the global development of a compressible shear layer.
Document ID
Document Type
Conference Paper
Washington, Donnell
(Florida Agricultural and Mechanical Univ. Tallahassee, FL United States)
Alvi, Farrukh S.
(Florida Agricultural and Mechanical Univ. Tallahassee, FL United States)
Krothapalli, Anjanevulu
(Florida Agricultural and Mechanical Univ. Tallahassee, FL United States)
Date Acquired
August 17, 2013
Publication Date
January 1, 1997
Publication Information
Publication: The First National Student Conference: NASA University Research Centers at Minority Institutions
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
Funding Number(s)
Distribution Limits
Public Use Permitted.
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