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Combustion-acoustic stability analysis for premixed gas turbine combustors
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Darling Sr., Douglas Oyediran, Ayo Radhakrishnan, Krishnan Cowan, Lizabeth |
| Copyright Year | 1995 |
| Description | Lean, prevaporized, premixed combustors are susceptible to combustion-acoustic instabilities. A model was developed to predict eigenvalues of axial modes for combustion-acoustic interactions in a premixed combustor. This work extends previous work by including variable area and detailed chemical kinetics mechanisms, using the code LSENS. Thus the acoustic equations could be integrated through the flame zone. Linear perturbations were made of the continuity, momentum, energy, chemical species, and state equations. The qualitative accuracy of our approach was checked by examining its predictions for various unsteady heat release rate models. Perturbations in fuel flow rate are currently being added to the model. |
| File Size | 622888 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950026510 |
| Archival Resource Key | ark:/13960/t06x48v1g |
| Language | English |
| Publisher Date | 1995-08-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Fuel Combustion Premixed Flames Gas Turbine Engines Combustible Flow Perturbation Standing Waves Combustion Stability Reaction Kinetics Premixing Eigenvalues Mathematical Models Combustion Chambers Axial Modes Aeroacoustics Heat Transfer Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
