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RISOn the Adequacy of Chemiluminescence as a Measure for Heat Release in Turbulent Flames With Mixture Gradients
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The determination of the heat release in technical flames is commonly done via bandpass filtered chemiluminescence measurements in the wavelength range of OH∗ or CH∗ radicals, which are supposed ...
Experiments on Flame Flashback in a Quasi-2D Turbulent Wall Boundary Layer for Premixed Methane-Hydrogen-Air Mixtures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Premixed combustion of hydrogen-rich mixtures involves the risk of flame flashback through wall boundary layers. For laminar flow conditions, the flashback mechanism is well understood and is ...
Optimization of the Aerodynamic Flame Stabilization for Fuel Flexible Gas Turbine Premix Burners
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A frequently employed method for aerodynamic flame stabilization in modern premixed low emission combustors is the breakdown of swirling flows; with carefully optimized tailoring of the swirler, ...
Lean Blowout Limit and NOx Production of a Premixed Sub-ppm NOx Burner With Periodic Recirculation of Combustion Products
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The technological objective of this work is the development of a lean-premixed burner for natural gas. Sub-ppm NOx emissions can be accomplished by shifting the lean blowout limit (LBO) to ...
NOx Emissions of a Premixed Partially Vaporized Kerosene Spray Flame
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An important question for future aeroengine combustors is how partial vaporization influences the NOx emissions of spray flames. In order to address this question an experimental study of the ...
Influence of Transversal Acoustic Excitation of the Burner Approach Flow on the Flame Structure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern large gas turbines for power generation have multiple burners, which are distributed around the circumference of the engine and which generate flames in combustors of either annular or ...
Experimental Investigation of Turbulent Boundary Layer Flashback Limits for Premixed Hydrogen-Air Flames Confined in Ducts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The design of flashback-resistant premixed burners for hydrogen-rich fuels is strongly dependent on reliable turbulent boundary layer flashback limits, since this process can be the dominant failure ...
Emission Characteristics of a Premixed Cyclic-Periodical-Mixing Combustor Operated With Hydrogen-Natural Gas Fuel Mixtures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The concept of the cyclic periodical mixing combustion process (, and , 2004, “Lean Blowout Limit and NOx-Production of a Premixed Sub-ppm-NOx Burner With Periodic Flue Gas Recirculation,” ...
Determination of the Heat Release Distribution in Turbulent Flames by a Model Based Correction of OH* Chemiluminescence
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Imaging of OH* or CH* chemiluminescence with intensified cameras is often employed for the determination of heat release in premixed flames. Proportionality is commonly assumed, but in the ...
Experimental Study on Laser-Induced Ignition of Swirl-Stabilized Kerosene Flames
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Conventional ignition systems of aeroengines are an integral part of the combustion chamber’s structure. Due to this hardware-related constraint, the ignition spark has to be generated in the ...