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http://dx.doi.org/10.5139/JKSAS.2010.38.4.395

Design Improvement of Baffle Injector Using Conjugate Heat Transfer Analysis  

Kim, Seong-Ku (한국항공우주연구원 연소기팀)
Han, Yeoung-Min (한국항공우주연구원 연소기팀)
Choi, Hwan-Seok (한국항공우주연구원 연소기팀)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.38, no.4, 2010 , pp. 395-402 More about this Journal
Abstract
Baffle injectors are protruded into the combustion chamber and form an anti-pulsating baffle to prevent high-frequency combustion instabilities in transverse modes. Being exposed to a high heat-flux environment, the baffle injector has self-cooling passages through which kerosene is convected and heated. The baffle injector with 20 spiral cooling channels has been developed and successfully applied to 30 $ton_f$-class combustors without any performance loss due to an additional cooling. In this work, numerical analysis of conjugate heat transfer in baffle injectors with various cooling channel designs has been performed in order to reduce the fabrication cost which would be considerably increased for the 75 $ton_f$-class combustor. Prior to the application to a full-scale combustor, the thermal durability of the modified design has been verified through the subscale hot-firing tests.
Keywords
Liquid Rocket Combustor; Combustion Instability; Baffle Injector; Conjugate Heat Transfer Analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 김성구, 김홍집, “75톤급 연소기의 연소불안정 제어를 위한 배플의 예비설계”, KARI-CCTTM-2006-022, 한국항공우주연구원, 2006.
2 Liquid Rocket Engine Combustion Stabilization Devices, NASA SP-8113, 1974.
3 Liquid Rocket Engine Combustion Instability, Yang, V. and Anderson, W.E. (eds), Progress in Astronautics and Aeronautics, Vol. 169, AIAA, 1995.
4 김성구, 문윤완, 김홍집, 김종규, 김인태, 한영민, “연소안정화를 위한 배플 분사기 개발”, KARI-CCG-TM-2005-002, 한국항공우주연구원, 2005.
5 Shah, N.G., "A New Method of Computation of Radiant Heat Transfer in combustion Chambers”, PhD thesis, Imperial College of Science and Technology, London, England, 1979.
6 최환석, 한영민, 김영목, 조광래, “추력 30톤급 액체산소/케로신 로켓엔진 연소장치 개발(I)-연소기”, 한국항공우주학회지, 제 37권 제 10호, 2009, pp. 1027-1037.
7 김홍집, 조원국, 문윤완, “막냉각 모형을 이용한 액체로켓엔진 연소기의 열해석”, 한국추진공학회지, 제 10권 제 4호, 2006, pp. 85-92.   과학기술학회마을
8 Fluent 6.1 User's Guide, 2003.
9 Kim, S.-E., "Large eddy simulation using unstructured meshes and dynamic subgrid-scale turbulence methods”, AIAA-2004-2548, 34th Fluid Dynamics Conference and Exhibit, June, 2004.