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2021 Vol.26, Issue 1 Preview Page

Research Article

Combustion Instability Characteristics of a Model Gas Turbine Burning Coal Gas with Different Combustor Geometries

석탄가스 모델 가스터빈의 연소실 형상 변화에 따른 연소불안정 특성

Gyu Seong Youn1
,
Won Joon Song2
,
Dong Jin Cha1*
윤 규성1
,
송 원준2
,
차 동진1*
1Department of Building and Plant Engineering, Hanbat National University
2Department of Mechanical Systems Engineering for Energy Convergence, Dongshin University
1한밭대학교 설비공학과
2동신대학교 에너지기계설비전공
*Corresponding Author
31 March 2021. pp. 31-40
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Abstract

Combustion instability of a synthetic coal gas flame in a partially-premixed gas turbine combustor has been numerically studied by utilizing a lumped network code, OSCILOS. Both H2 percentage of the coal gas consisting H2 and CH4 and the length of the combustor were varied in this study. A companion experimental data were borrowed and used for validating the numerical results. The predicted results reasonably agree well with the afore-mentioned experimental ones. It was found that the mode of the instability shifted to the higher mode when H2 content of the gas became larger, and that the dominant frequency of the instability was reduced as the combustor was getting longer.

Keywords
Coal gas
IGCC(Integrated Gasification Combined Cycle)
Combustion instability
Combustor geometry
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Information
  • Publisher :The Korean Society of Combustion
  • Publisher(Ko) :한국연소학회
  • Journal Title :Journal of the Korean Society of Combustion
  • Journal Title(Ko) :한국연소학회지
  • Volume : 26
  • No :1
  • Pages :31-40
  • Received Date : 2020-12-07
  • Revised Date : 2020-12-14
  • Accepted Date : 2021-01-19
  • DOI :https://doi.org/10.15231/jksc.2021.26.1.031
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