2016 Fiscal Year Final Research Report
Theoretical and numerical studies on compressible turbulent flows with shock waves
| Project/Area Number |
26420109
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
Ohwada Taku 京都大学, 工学研究科, 准教授 (40223987)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | Shock capturing / high order accuracy / carbuncle phenomenon / post shock oscillations / contact discontinuity / turbulence |
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| Outline of Final Research Achievements |
The interaction between a Rankine vortex and a normal shock wave was numerically analyzed and acceptable agreement between the BGK solution and the NS shock-capturing one was confirmed except around the shock wave, which suggests that shock-turbulence interaction can be well analyzed by conventional shock capturing apporach when Kolmogorov scale is two orders of magnitude larger than the mean free path of gas molecules.
We developed a high order accurate shock-capturing scheme aiming to application to shock-turbulence interaction. The scheme is endowed with strong robustness against shock anomalies and capture a contact-discontinuity sharply. Its computational cost is about 60 percent of WENO scheme, which is often employed in numerical simulations of shock-turbulence interactions.
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| Free Research Field |
流体力学
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