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Effects of rotating flows on combustion and jet noise.Experimental investigations of combustion in rotating (swirling) flow have shown that the mixing and combustion processes were accelerated, flame length and noise levels significantly decreased, and flame stability increased relative to that obtained without rotation. Unsteady burning accompanied by a pulsating flame, violent fluctuating jet, and intense noise present in straight flow burning were not present in rotating flow burning. Correlations between theory and experiment show good agreement. Such effects due to rotating flows could lead to suppressing jet noise, improving combustion, reducing pollution, and decreasing aircraft engine size. Quantitative analysis of the aero-acoustic relationship and noise source characteristics are needed.-
Document ID
19720050421
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Schwartz, I. R.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
June 1, 1972
Subject Category
Thermodynamics And Combustion
Report/Patent Number
AIAA PAPER 72-645
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference
Location: Boston, MA
Start Date: June 26, 1972
End Date: June 28, 1972
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
72A34087
Distribution Limits
Public
Copyright
Other

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