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An Experimental Study on Effect of Half-Wave Resonator Position on Acoustic Damping in a Combustion Chamber  

Sohn, Chae-Hoon (세종대학교 기계항공우주공학부)
Kim, Chul-Hee (조선대학교 대학원 항공우주공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.12, no.2, 2008 , pp. 1-7 More about this Journal
Abstract
Effect of radial position of half-wave resonator is investigated experimentally for acoustic damping in a combustion chamber by adopting acoustic cold test. Acoustic damping is quantified by damping factor. When resonator with optimal tuning length is installed, damping is enhanced as its radial location is away from the center of the faceplate. And, spatial profile of damping factor is similar to that of the amplitude of the acoustic mode to be damped. As the location is close to the center, acoustic damping is mitigated and independent of the resonator length. On the other hand, the resonator with non-optimal length dose not show any effects of its radial position. Acoustic-damping capacity can be evaluated as functions of resonator length and position.
Keywords
Acoustic Damping; Half-Wave Resonator; Damping Factor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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