• 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 |
analysis and prediction of thin-airfoil stall phenomena with LES/RANS hybrid methodology
corresponding major papers
| ᡒ Kawai, S., PhD dissertation, March 2005. |  PhD(68MB) |
| ᡒ Kawai, S. and Fujii, K., AIAA Paper 2004-2714. | AIAA2004-2714 |
other relevant papers are in publication(with PDF library)
overview
This research aimed to achieve a highly-fidelity prediction of the maximum lift and the stall angle of the thin-airfoil stall characteristic by using CFD within practical computational cost. Analysis and prediction of thin-airfoil stall phenomena of NACA64A006 airfoil were numerically investigated using LES/RANS hybrid methodology with high-order compact differencing scheme. Thin-airfoil stalling aerodynamic characteristics were successfully predicted using the LES/RANS hybrid methodology, and the mechanism of the formation of laminar small bubble near leading edge was clarified. High-order compact differencing scheme provides extremely high fidelity results for the complicated and separated flowfields associated with a NACA64A006 airfoil near stall The results illustrated the possibility of the present LES/RANS hybrid methodology for the prediction of the massively-separated high Reynolds number flows with laminar separation and turbulent reattachment within more practical computational cost than that of pure LES approach.
contents
| background | engineering background & motivation | |
| past efforts | why LES/RANS hybrid methodology | |
| method | numerical schemes and modelings | |
| results | analysis & prediction of the stall phenomena |
