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RISInfluence of the Combustor Aerodynamics on Combustion Instabilities From Equivalence Ratio Fluctuations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Gas turbine combustors are often susceptible to self-excited oscillations, which lead to unacceptable levels of pressure, velocity, and heat release fluctuations. Although instabilities can occur ...
Internal Flow Effects in Prefilming Airblast Atomizers: Mechanisms of Atomization and Droplet Spectra
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fuel atomization with prefilming airblast nozzles has been investigated. The present analysis is directed toward a detailed investigation of the atomization processes and the clarification of the ...
Time Scale Model for the Prediction of the Onset of Flame Flashback Driven by Combustion Induced Vortex Breakdown
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flame flashback driven by combustion induced vortex breakdown (CIVB) represents one of the most severe reliability problems of modern gas turbines with swirl stabilized combustors. Former experimental ...
Time Domain Simulation of Combustion Instabilities in Annular Combustors
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A novel method for the simulation of combustion instabilities in annular combustors is presented. It is based on the idea to solve the equations governing the acoustics in the time domain and ...
Analysis of Combustion Induced Vortex Breakdown Driven Flame Flashback in a Premix Burner With Cylindrical Mixing Zone
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In earlier experimental studies of the authors a previously unknown mechanism leading to flame flashback—combustion induced vortex breakdown (CIVB)—was discovered in premixed swirl burners. It ...
Dynamic Adaptation of Aerodynamic Flame Stabilization of a Premix Swirl Burner to Fuel Reactivity Using Fuel Momentum
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Due to the expected increase in available fuel gas variants in the future and the interest in independence from a specific fuel, fuel flexible combustion systems are required for future gas ...
Flashback in a Swirl Burner With Cylindrical Premixing Zone
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flame flashback from the combustion chamber into the mixing zone is one of the inherent problems of lean premixed combustion and essentially determines the reliability of low NOx burners. ...
Flashback Limits for Combustion Induced Vortex Breakdown in a Swirl Burner
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flame flashback from the combustion chamber into the mixing zone limits the reliability of swirl stabilized lean premixed combustion in gas turbines. In a former study, the combustion induced ...
Instability of a Premix Burner With Nonmonotonic Pressure Drop Characteristic
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Instabilities in combustion systems have frequently been reported to occur when slight changes in operating conditions lead to significant and abrupt changes in flame shape or flame position, ...
Low NOx Premixed Combustion of MBtu Fuels in a Research Burner
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper reports on the development and testing of a premix research burner for MBtu fuels. The burner has a quartz glass annular mixing section and a quartz, glass flame tube to allow ...