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http://dx.doi.org/10.6108/KSPE.2012.16.5.029

Case Study on Combustion Stabilization in FASTRAC Thrust Chamber Using Acoustic Cavities  

Kim, Hong-Jip (충남대학교 기계공학과)
Kim, Seong-Ku (한국항공우주연구원 연소기팀)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.16, no.5, 2012 , pp. 29-36 More about this Journal
Abstract
3-D linear acoustic analysis has been performed to elucidate damping characteristics of large Helmholtz acoustic cavities in FASTRAC thrust chamber. Acoustic impedance concept has been introduced to quantify combustion stabilization capacity. For a given acoustic cavity, sonic velocity in the cavity to achieve an optimal tuning has been determined and satisfactory agreement with the previous results has been obtained. Feasible estimation of sonic velocity in the acoustic cavity has been devised. Results show similar trends without significant deviations, which can be used in the procedure of design and verification of acoustic cavity. From the satisfactory results, investigation of other thrust chambers with acoustic cavities which have shown combustion instabilities will be done as future works.
Keywords
Combustion Instability; Acoustic Cavity; Resonant Frequency; Acoustic Impedance; Absorption Coefficient; Acoustic Conductance; Sonic Velocity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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