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Noise sources in swirl burners

✍ Scribed by A.K. Gupta; N. Syred; J.M. Beér

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
452 KB
Volume
9
Category
Article
ISSN
0003-682X

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✦ Synopsis

Sources of noise present in swirl burners in the non-combustive and combustive cases are experimentally investigated. It is shown that under the non-combustive conditions, the main source of noise is the precessing vortex core, a three-dimensional timedependent instability present in such burners at high degrees of swirl. With combustion, the amplitude of this instability is damped and the combustion roar is predominant. Regimes of noise (combustion roar) generation in a fame can be located by measurements of temperature fluctuations, as it is demonstrated that there is a good correlation with pressure fluctuations.

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