2012 Fiscal Year Final Research Report
Computational science of fully developed magnetohydrodynamic turbulence: examination of its universality and development of turbulent modeling method
| Project/Area Number |
22740255
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 流体 / 計算物理 / 数値物理 / 応用数学 |
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| Research Abstract |
The four-fifths law for third-order longitudinal moments was examined, using direct numerical simulation data of three-dimensional (3D) magnetohydrodynamic (MHD) turbulence. The influence of the directional anisotropy on the law is suggested to be substantial, at least in the case studied here, while this is not the case for 3D hydrodynamic turbulence. A simulation method to track the time evolution of coherent vorticity and current density was also developed for 3D MHD turbulence. It isfound that the method well preserves the statistical predictability of the turbulent flow with a reduced number of degrees of freedom.
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