Results 41 to 50 of about 2,170 (163)
Авіаційно-космічна техніка та технологіяInnovative use of energy resources in deep space planets is a technology that allows a significant increase in space exploration based on the design of rocket power plants, particularly for lunar landing modules using (Lunar Regolith) propellants ...
Olexiy Nikolayev, Inna Bashliy
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Flow and Flame Mechanisms for Swirl-Stabilized Combustors
AerospaceThis article reviews the physical and chemical mechanisms associated with unsteady swirl-stabilized partially or fully lean premixed combustion.
Paul Palies
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A model for premixed combustion oscillations [PDF]
, 1996 Combustion oscillations are receiving renewed research interest due to increasing application of lean premix (LPM) combustion to gas turbines. A simple, nonlinear model for premixed combustion is described; it was developed to explain experimental results and to provide guidance for developing active control schemes based on nonlinear concepts.
Janus, M. C., Richards, G. A.
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The Effects of Non-uniform Distribution of Oxidizer Flow on High-Frequency Combustion Instability
MATEC Web of Conferences, 2019 The numerical calculation of three-dimensional unsteady combustion for the combustion chamber of LOX/kerosene high pressure staged combustion rocket engine was carried out.
Chen Peng +5 more
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Symptoms of Combustion Oscillation and their Detection
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2004 Monitoring of OH chemiluminescence through an optical fiber was demonstrated to be a useful method in detecting self-excited combustion oscillations. OH chemiluminescence intensity detected by the optical fiber showed mostly excellent agreement with those obtained by high speed CCD camera measurements when combustion oscillations were strong.
YANG, Young-Joon +2 more
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Experimental Investigation on Knock Characteristics from Pre-Chamber Gas Engine Fueled by Hydrogen
EnergiesHydrogen-fueled engines require large values of the excess air ratio in order to achieve high thermal efficiency. A low value of this coefficient promotes knocking combustion.
Ireneusz Pielecha +2 more
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JIRAE (International Journal of Industrial Research and Applied Engineering), 2018 Gasoline engines needs to reduce its negative emission waste and raise its thermal efficiency. Previous studies have shown an improvement of engines by regulating the ignition timing and retaining the engine at certain air-to-fuel ratio.
Mitsuhisa Ichiyanagi +3 more
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Applied SciencesThe premixed combustion of a gas turbine is prone to thermoacoustic oscillation, which affects the safety of combustion systems. This study experimentally investigated the suppression mechanism of a stratified jet-in-crossflow on the thermoacoustic ...
Rongyue Sun, Chengfei Tao
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AerospaceCombustion instability is an abnormal working state that often occurs in advanced solid rocket motors (SRMs), which can arouse pressure oscillations, increase the risk of mission failure, and even cause structural damage.
Fengnan Guo +4 more
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Utilization of Combustion-Driven Oscillations [PDF]
The Journal of the Acoustical Society of America, 1963 The possible applications of combustion-driven oscillations fall into two categories. The first category includes applications that are related to the combustion process itself, such as those concerned with the possibility of alterlog space heat-release rate, combustion efficiency, heat transfer to surfaces, and agglomeration of solid or liquid ...
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