Abstract
Ramjets exhibit undesirable combustion instabilities under certain operating conditions. In this paper, large-eddy simulation(LES) and premixed combustion model have been efficiently implemented to study combustion instabilities in ramjet combustors. The main objective is to predict dominant frequencies and various flow features of the combustors. Combustion instabilities in the ramjet dump combustor have been numerically simulated. Low-frequency, large-amplitude instabilities are observed, and instability frequencies and flame spread during various operating conditions are in good agreement with experimental observations. The results show large vortex structures dominate the flame propagation and vortex convection coupled unsteady heat release excites pressure oscillation in ramjet combustor.
| Original language | English |
|---|---|
| Title of host publication | Collection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference |
| Pages | 7294-7300 |
| Number of pages | 7 |
| State | Published - 2007 |
| Event | 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference - Cincinnati, OH, United States Duration: 8 Jul 2007 → 11 Jul 2007 |
Publication series
| Name | Collection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference |
|---|---|
| Volume | 7 |
Conference
| Conference | 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference |
|---|---|
| Country/Territory | United States |
| City | Cincinnati, OH |
| Period | 8/07/07 → 11/07/07 |
Fingerprint
Dive into the research topics of 'Numerical simulation of combustion instability in a model ramjet combustor'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver