Analysis of Combustion Instability in a Single-Burner Test Rig with Variations in Hydrogen Co-Firing Ratio and Thermal Power

In this study, the effects of hydrogen co-firing rates and thermal power variations on combustion instability were analyzed in a single burner combustion test rig, using CFD and 1D network modeling techniques.the time delay and its distribution in a flame zone derived from CFD were applied to the network model in order to evaluate the combustion instability characteristics.The analysis results confirmed that the key modeling characteristics closely matched the experimental measurements.Consequently, we verified that the increase in hydrogen co-firing rates and thermal power significantly influence the time delay and its distribution, and that these changes are the primary causes of alterations in combustion instability characteristics. 초 록본 연구에서는 CFD 해석과 1D 네트워크 모델링