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RISMixed Acoustic-Entropy Combustion Instabilities in a Model Aeronautical Combustor: Large Eddy Simulation and Reduced Order Modeling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This article focuses on combustion instabilities (CI) driven by entropy fluctuations which is of great importance in practical devices. A simplified geometry is introduced. It keeps the essential features of an aeronautical ...
A New Approach to Estimate Particulate Matter Emissions From Ground Certification Data: The nvPM Mission Emissions Estimation Methodology
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Estimating nonvolatile particulate matter (nvPM)—or black carbon—emissions during an aircraft mission is extremely challenging because of the lack of reliable data in flight. For this reason, a detailed study has been ...
Intermittency of Flame Structure and Thermo-Acoustic Behavior in a Staged Multipoint Injector Using Liquid Fuel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study investigates the impact of the staging factor, the ratio between the fuel injected through the pilot stage and the multipoint injection, on the flame dynamic. The BIMER combustor is an atmospheric pressure rig ...
Analysis and Modeling of Entropy Modes in a Realistic Aeronautical Gas Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A combustion instability in a combustor typical of aeroengines is analyzed and modeled thanks to a low order Helmholtz solver. A dynamic mode decomposition (DMD) is first applied to the large eddy simulation (LES) database. ...