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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Steve, J. Brookes Cant, R. Stewart Iain, D. J. Dupere Ann, P. Dowling |
| Copyright Year | 2000 |
| Abstract | It is well known that lean premixed combustion systems potentially offer better emissions performance than conventional non-premixed designs. However, premixed combustion systems are more susceptible to combustion instabilities than non-premixed systems. Combustion instabilities (large-scale oscillations in heat release and pressure) have a deleterious effect on equipment, and also tend to decrease combustion efficiency. Designing out combustion instabilities is a difficult process and, particularly if many large-scale experiments are required, also very costly. Computational fluid dynamics (CFD) is now an established design tool in many areas of gas turbine design. However, its accuracy in the prediction of combustion instabilities is not yet proven. Unsteady heat release will generally be coupled to unsteady flow conditions within the combustor. In principle, computational fluid dynamics should be capable of modelling this coupled process. The present work assesses the ability of CFD to model self-excited combustion instabilities occurring within a model combustor. The accuracy of CFD in predicting both the onset and the nature of the instability is reported. |
| Sponsorship | International Gas Turbine Institute |
| File Format | |
| ISBN | 9780791878552 |
| DOI | 10.1115/2000-GT-0104 |
| Volume Number | Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations |
| Conference Proceedings | ASME Turbo Expo 2000: Power for Land, Sea, and Air |
| Language | English |
| Publisher Date | 2000-05-08 |
| Publisher Place | Munich, Germany |
| Access Restriction | Subscribed |
| Subject Keyword | Design Heat Gas turbines Computational fluid dynamics Oscillations Combustion Combustion systems Unsteady flow Combustion chambers Modeling Pressure Emissions |
| Content Type | Text |
| Resource Type | Article |
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