• 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 |
computational study of a supersonic base flow with LES/RANS hybrid methodology
corresponding major papers
| ᡒ Kawai, S., PhD dissertation, March 2005. |  PhD(68MB) |
| ᡒ Kawai, S. and Fujii, K., AIAA J. in press. | |
| ᡒ Kawai, S. and Fujii, K., AIAA Paper 2004-0068. | AIAA2004-0068 |
other relevant papers are in publication(with PDF library)
overview
This research aimed to achieve accurate CFD predictions of base flows within practical computational cost, which is fundamental but important for many engineering problems. LES/RANS hybrid methodology was applied to a high Reynolds number supersonic axisymmetric base flow. An accurate predictions of the base flow field and base pressure were successfully achieved by using the LES/RANS hybrid methodology with less computational cost than that of pure LES and monotone integrated large-eddy simulation (MILES) approaches. Both the reliability and efficiency of the present LES/RANS hybrid methodology for the prediction of massively-separated high Reynolds number flows were identified by comparison with the results obtained by LES, MILES and RANS and the experiments in detail.
contents
| background | engineering background & motivation | |
| approach | why LES/RANS hybrid methodology | |
| method | numerical schemes and modelings | |
| results | instantaneous & time-averaged base flow prediction |
