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RISA Weakly Nonlinear Approach Based on a Distributed Flame Describing Function to Study the Combustion Dynamics of a Full-Scale Lean-Premixed Swirled Burner
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern combustion chambers of gas turbines for power generation and aero-engines suffer of thermo-acoustic combustion instabilities generated by the coupling of heat release rate fluctuations with pressure oscillations. ...
Large Eddy Simulation of a Pistonless Constant Volume Combustor: A New Concept of Pressure Gain Combustion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Classical gas turbine thermodynamic cycle has undergone no change over the last decades. The most important efficiency improvements have been obtained by reducing thermal losses and raising the overall pressure ratio and ...
Impact of Heat Release Distribution on the Spinning Modes of an Annular Combustor With Multiple Matrix Burners
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present article reports a numerical analysis of instability coupled by a spinning mode in an annular combustor. This corresponds to experiments carried out on the MICCA test facility equipped with 16 matrix burners. ...
The Effect of Stratification Ratio on the Macrostructure of Stratified Swirl Flames: Experimental and Numerical Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present paper reports experimental and numerical analyses of the macrostructures featured by a stratified swirling flame for varying stratification ratio (SR). The studies are performed with the Beihang Axial Swirler ...