Studies on freejets from nozzles for high-speed mixing applications

Four different supersonic nozzles, circular, elliptical, tabbed, and radially lobed, are compared experimentally for their freejet mixing performance. With the background of studies by various groups conducted on elliptical, tabbed, and radially lobed nozzles, the present paper aims at a comparative...

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Bibliographic Details
Published in:Experiments in fluids 2000-10, Vol.29 (4), p.359-368
Main Authors: RAMESH, R, PRADEEP, S, MURUGANANDAM, T. M, SUJITH, R. I
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Furnaces. Firing chambers. Burners
Gaseous fuel burners and combustion chambers
Instrumentation for fluid dynamics
Physics
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Summary:Four different supersonic nozzles, circular, elliptical, tabbed, and radially lobed, are compared experimentally for their freejet mixing performance. With the background of studies by various groups conducted on elliptical, tabbed, and radially lobed nozzles, the present paper aims at a comparative experimental study to compare their mixing performance with that of a conventional circular nozzle under identical operating conditions. The investigation is performed non-intrusively using digital image processing of the planar Mie scattering images of the flow field. The results of these investigations reveal the superiority of the mixing performance of the lobed nozzles over conventional circular and other nonconventional nozzles. (Author)
ISSN:0723-4864
1432-1114
DOI:10.1007/s003489900095