Results 181 to 190 of about 1,024 (213)
Some of the next articles are maybe not open access.
Thermoacoustic instabilities of lean disc flames
Fuel, 2016Abstract The present work evaluates impinging lean disc flames, stabilized on a Helmholtz resonator, under thermoacoustic oscillations. These unsteady flames were found to oscillate with either one single frequency ( f ) or two simultaneous frequencies ( f , 2 f ).
B.F.C. Cintra, E.C. Fernandes
openaire +1 more source
Thermoacoustic Flow Instability in a Scramjet Combustor
41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2005*† ‡ § ¶ This paper deals with the thermoacoustic instability and ensuing flow oscillation in a scramjet engine, a phenomenon commonly known as combustion instability. The analysis is based on a quasi-one-dimensional treatment of unsteady flow motion, which simulates the main features of the oscillatory flowfields in both the isolator and combustor ...
Fuhua Ma +4 more
openaire +1 more source
Intrinsic thermoacoustic instabilities
Progress in Energy and Combustion Science, 2023openaire +1 more source
Low order modeling of thermoacoustic instabilities
2022Pollution and The Greenhouse Effect are a concern in our society. The high levels of CO2, NOx, ozone, and methane gasses are alarming and have pushed gas turbine industries to develop more environmentally friendly combustors. In the past years, Lean Premixed Combustors have been identified as a potential solution.
openaire +1 more source
Thermoacoustic Instabilities in Counterflow Diffusion Flames
2019Thermoacoustic instabilities arise in combustion systems from a coupling between the unsteady heat release of the flame and the underlying acoustic field. Although thermoacoustics have been studied extensively with regards to premixed flames, where the fuel and oxidizer are fully mixed before combustion, the study of thermoacoustics in diffusion flames
openaire +1 more source
Understanding the role of flow dynamics in thermoacoustic combustion instability
Proceedings of the Combustion Institute, 2023Jacqueline O’Connor
exaly
Modeling, Analysis, and Control of Thermoacoustic Instabilities
2010Moderne Gasturbinen werden mit magerer Vormischverbrennung betrieben, um niedrige Emissionsstandards zu erfüllen. Diese Art der Verbrennung ist jedoch äußerst anfällig gegenüber Störungen der Flamme durch akustische Schwankungen. Hierdurch entstehen sogenannte thermoakustische Instabilitäten, die sich durch außerordentlich hohe Druckpulsationen ...
openaire +2 more sources