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http://dx.doi.org/10.6108/KSPE.2022.26.4.001

Acoustical Dynamic Response Analysis of a Gas Turbine Combustor Using a Sine-Sweep Forcing Model  

Son, Juchan (Department of Mechanical Engineering, Gangneung-Wonju National University)
Kim, Daesik (Department of Mechanical Engineering, Gangneung-Wonju National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.26, no.4, 2022 , pp. 1-9 More about this Journal
Abstract
In the current study, in order to understand the dynamic response characteristics of the system according to the external acoustic forcing, a numerical approach was developed by adding an sign-sweep forcing function to the existing network model. Through this model, the sensitivity of frequency and pressure amplitude changes according to system parameters such as the physical dimensions and boundary conditions of the target combustor was analyzed in a wide frequency range. Analysis results of dynamic response characteristics of the target combustor are shown that the frequency regime with high dynamic pressure response was similar to the instability frequency range measured in the same combustor, and in particular, the response of the system depends greatly on the location of the acoustic forcing source term.
Keywords
1D Network Model; Thermoacoustic Instability; Sine-Sweep Forcing; Resonant Frequency;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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