Statistical Properties of Strong MHD Turbulence without Helicity
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概要
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Statistical properties of magneto-hydrodynamic turbulence are investigatedtheoretically using the modified zero-fourth cumulant approximation. A set of twodynamical equations for kinetic and magnetic energy spectra is integrated numeri-cally for Prandtl number unity. The equipartition between kinetic and magneticenergy spectra is shown to be attained in high wavenumbers after a short elapseof time, but a significant difference between them is found in low wavenumbers.The energy spectrum of the form k "' predicted by Kraichnan is'not confirmedfrom our numerical results. Statistical quantities such as the total energy, theenstrophy and the micro-scale Reynolds number are calculated from the energyspectra. A phenomenological theory is also developed to obtain a decay lawof the total energy and it is compared with the results of the numerical calculations.
- 1985-01-15
著者
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SAITO Yoshio
Department of General Education,Faculty of Medical Science,Toho University
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MIZUSHIMA Jiro
Department of Information Science,Sagami Institute of Technology
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FUTAMI Naoyuki
Department of Information Science,Sagami Institute of Technology
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Futami Naoyuki
Department Of Information Science Sagami Institute Of Technology
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Mizushima Jiro
Department Of Information Science Sagami Institute Of Technology
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Saito Yoshio
Department Of Electronics And Information Science Kyoto Institute Of Technology
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Saito Yoshio
Department Of General Education Faculty Of Medical Science Toho University
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SAITO Yoshio
Department of Chemistry, Faculty of Science and Technology, Keio Univerisity
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