| Title | Classification of Combustor-Inlet Interactions for Airbreathing Ramjet Propulsion |
| Authors | Cui, Tao Wang, Yong Liu, Kai Jin, Jianren |
| Affiliation | Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China. Peking Univ, Coll Engn, Beijing 100871, Peoples R China. |
| Keywords | TRANSONIC DIFFUSER FLOW MODE TRANSITION HYSTERESIS PHENOMENON SCRAMJET ENGINES SUPERSONIC INLET SHOCK POSITION UNSTART OSCILLATIONS DYNAMICS SIMULATION |
| Issue Date | 2015 |
| Publisher | AIAA JOURNAL |
| Citation | AIAA JOURNAL.2015,53,(8),2237-2255. |
| Abstract | Combustor-inlet interaction is a longstanding classic problem in airbreathing propulsion engineering that is still not fully understood, as evidenced by frequently occurring flight-test unstart events. This study aims at providing a rigorous classification of combustor-inlet interactions that will permit the efficient diagnosis of unstart events, and improve the overall reliability of propulsion systems. Using the proposed mathematical method, the full range of possible interactions can be well defined within the framework of the classification. Specifically, the existence of 11 finite, rigorously separable types of combustor-inlet interactions in ramjet flow is shown. The classification is achieved by first defining the problem as classifying the hysteresis behaviors that occur during combustor-inlet interactions, and then proposing a general method for classifying the hysteresis behaviors of multistable systems, which is also applicable to ramjet flow. Besides the mathematical aspects, novel nondimensional parameters are defined to formulate the classification criteria for the purpose of providing a physical insight into the problem. The findings reported here will lead to a more complete understanding of combustor-inlet interactions, and can be used as a theoretical basis to analyze the complex interactions involved in ground and flight experiments. |
| URI | http://hdl.handle.net/20.500.11897/417660 |
| ISSN | 0001-1452 |
| DOI | 10.2514/1.J053378 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 工学院 |
