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Swirling flows in an annular-to-rectangular transition section

Sobota, Thomas H. and Marble, Frank E. (1989) Swirling flows in an annular-to-rectangular transition section. Journal of Propulsion and Power, 5 (3). pp. 334-340. ISSN 0748-4658. doi:10.2514/3.23157.

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Mechanisms for generation of axial vorticity by swirling flows in rectangular nozzles have been investigated experimentally and computationally. A detailed experimental investigation is described that demonstrates the formation of axial vortices in the nozzle is dependant on the vorticity distribution at the turbine exhaust. Further, mechanisms providing for the formation of axial vortices are identified. A parallel computational investigation was carried out that not only confirmed the relationship between the turbine exhaust vorticity and the vortex patterns formed in the nozzle, but also provided details of the flowfield between the turbine discharge and the nozzle exit. On the basis of this more detailed understanding, it is now possible to "tailor" the vortex distribution at the nozzle exit by design of the turbine discharge and the intervening passage.

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Additional Information:© 1989 American Institute of Aeronautics and Astronautics, Inc. Presented as Paper 87-2108 at the AIAA/SAE/ASME/ASEE 23rd Joint Propulsion Conference. San Diego, CA, June 29-July 2, 1987; received Aug. 3, 1987; revision received May 9, 1988.
Group:Guggenheim Jet Propulsion Center
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Guggenheim Jet Propulsion CenterUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20101203-094947244
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Official Citation:Swirling flows in an annular-to-rectangular transition section SOBOTA, THOMAS H., ; MARBLE, FRANK E., California Institute of Technology, Pasadena Journal of Propulsion and Power 1989 0748-4658 vol.5 no.3 (334-340) doi: 10.2514/3.23157
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21145
Deposited By: Ruth Sustaita
Deposited On:03 Dec 2010 21:37
Last Modified:09 Nov 2021 00:06

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