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http://dx.doi.org/10.3795/KSME-B.2006.30.1.032

A Study on the Acoustic Damping Characteristics of Acoustic Cavities in a Liquid Rocket Combustor  

Kim Hong Jip (한국항공우주연구원 연소기그룹)
Kim Seong-Ku (한국항공우주연구원 연소기그룹)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.30, no.1, 2006 , pp. 32-40 More about this Journal
Abstract
A linear acoustic analysis has been performed to elucidate damping characteristics of acoustic cavities in a liquid rocket combustor. Results have shown that resonant frequencies of acoustic cavity obtained by classical theoretic approach and by the present linear analysis are somewhat different with each other. This difference is attributed to the limitation of the simplified classical theory. To quantify the damping characteristics, acoustic impedance has been introduced and resultant absorption coefficient and conductance have been evaluated. Satisfactory agreement has been achieved with previous experiment. Finally the design procedure for an optimal tuning of acoustic cavity has been established.
Keywords
Combustion Instability; Acoustic Cavity; Acoustic Impedance; Absorption Coefficient; Conductance;
Citations & Related Records
Times Cited By KSCI : 10  (Citation Analysis)
연도 인용수 순위
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