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Showing 1 to 5 of 5 for “"flame instabilities"”.
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A Thermoacoustic Characterization of a Rijke-type Tube Combustor
Pressure pulsations, or thermoacoustic instabilities, as they are called in the research community, can cause extensive damage in gas turbine combustion chambers. To understand the phenomena related to thermoacoustics, a simple Rijke-type tube combustor was built and studied. Extensive experimental …
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Hydrodynamic stability of a premixed flame subjected to transverse shear
Flame instabilities arise intrinsically in combustion systems and have important implication in the operation of engineering devices. The primary intrinsic instability of premixed combustion is caused by thermal gas-expansion, known as the hydrodynamic or the Darrieus-Landau (DL) instability. …
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Numerical Modelling of LOX Droplet Combustion in Hydrogen under Micro-gravity Conditions
… for improving combustion efficiency and avoiding flame instabilities in the rocket engine’s combustion chamber. The spray dispersion method is used to inject liquid oxygen into the combustion chamber, whereas hydrogen enters the combustion chamber in a gas phase, as it is most likely to be …
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Experimental and theoretical studies of combustion rates at high pressure
… approaching those in engines, with emphasis on flame instabilities. To encourage the development of such instabilities, mixtures with negative Markstein numbers were employed. Three different methods were used to measure burning velocities in a spherical bomb. The bomb was fitted with windows …
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Oxygen-Enhanced Combustion: Theory and Applications
… a stream of oxygen is available, a wide range of flame configurations is possible. This work considers two specific configurations of OEC and is divided into two parts. In Part I, fundamental experimental and numerical flame studies explore the combustion of gaseous fuel/inert mixtures in …