• about LES/RANS hybrid methodology
• current research focus
• past major research
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computational study of a supersonic base flow with LES/RANS hybrid methodology |
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analysis and prediction of thin-airfoil stall phenomena with LES/RANS hybrid methodology |
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numerical analysis of pulse detonation engine cycles |
numerical analysis of pulse detonation engine cycles
corresponding major papers
ᡒ Kawai, S. and Fujiwara, T., AIAA J., Vol. 41, No. 10, pp. 2013. ᡒ Kawai, S. and Fujiwara, T., AIAA Paper 2002-0927.
AIAA2004-0927other relevant papers are in publication(with PDF library)
overview
This research aimed to understand the characteristics of pulse detonation (PDE) cycles and estimate the performance of PDE for a future engine. We paid attention specifically to the behaviors of (1) burnt gas exhaust and (2) oxyhydrogen injection during the 2nd cycle. Two-dimensional numerical analysis of PDE cycles such as combustion, exhausting and fuel injection phases was performed with a simplified two-step chemical reaction model. The time ratios among elementary processes (combustion, exhaust and fuel injection) are independent of PDE length. The thrust density, the most important performance indicater of PDE, is also nearly independent of PDE length, in the case of zero DDT distance assumption.
contents
| PDE | about detonation and PDE | |
| background | engineering background & motivation | |
| method | numerical schemes and modelings | |
| results | cycle analysis & performance estimation of PDE |
