Control of Self-excited Instabilities and Emissions using Radial Fuel Staging in a Mesoscale Multinozzle Array

Hyebin Kang; Kyu Tae Kim

doi:10.15231/jksc.2022.27.3.014

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2022 Vol.27, Issue 3 Preview Page Next Page

Research Article

Control of Self-excited Instabilities and Emissions using Radial Fuel Staging in a Mesoscale Multinozzle Array 반경 방향 연료 스테이징을 통한 메조스케일 다중노즐 연소불안정 및 배기가스 제어

30 September 2022. pp. 14-23

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Abstract

The effect of radial fuel staging on combustion instabilities and NOx/CO emissions characteristics was investigated in a mesoscale multinozzle array consisting of sixty swirl injectors. We observe that inner fuel staging effectively mitigates high-amplitude oscillations by controlling the collective motion of the small-scale flames. The production of thermal NOx and CO emissions, however, tends to increase due to the presence of high-temperature region in the center flames. This result means that combustion dynamics and exhaust emissions need to be compromised when radial fuel staging scheme is used in gas turbine combustor environments.

Keywords

Combustion instability

Exhaust emissions

Fuel staging

Gas turbine combustion

Multinozzle

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Information

Publisher :The Korean Society Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of The Korean Society Combustion
Journal Title(Ko) :한국연소학회지
Volume : 27
No :3
Pages :14-23
Received Date : 2022-06-20
Revised Date : 2022-08-06
Accepted Date : 2022-08-17
DOI :https://doi.org/10.15231/jksc.2022.27.3.014

Journal of The Korean Society Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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