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http://dx.doi.org/10.15435/JILASSKR.2022.27.1.36

Combustion Instability Modeling in a Hydrogen-Natural Gas Mixed Fuel Gas Turbine Combustor using a 3-Dimensional Finite Element Method Approach  

Hong, Sumin (강릉원주대학교 기계공학과)
Kim, Daesik (강릉원주대학교 기계공학과)
Publication Information
Journal of ILASS-Korea / v.27, no.1, 2022 , pp. 36-41 More about this Journal
Abstract
In this study, the combustion instability characteristics according to the change in the hydrogen ratio in the fuel in the single nozzle system of the hydrogen-natural gas mixed gas turbine for power generation was analyzed using a three-dimensional finite element analysis-based Helmholtz solver. This combustor shows the instability characteristics in which mode transition occurs from a mode having a low amplitude near 70 Hz to a mode having a high amplitude of 250 Hz or higher as the hydrogen fraction in the fuel increases. The current modeling results are found to reasonably predict the main characteristics of the change in measured instability frequency and growth rate with the change in fuel composition.
Keywords
Combustion Instability; Finite Element Method; Thermo-acoustic Analysis; Hydrogen Combustion;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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