Probability Distribution of Velocity Circulation in Three- Dimensional Turbulence

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概要

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• The probability distribution functions (PDFs) of the circulation of velocity in three-dimensional decaying isotropic turbulence are examined using the database of numerical simulation based on the spectral method. It is shown that the standard deviation increases nearly as A^<2/3> where A is the area of the loop. The PDFs change from exponential to Gaussian as the size increases. The former agrees well with the prediction by Migdal (1993, hep-th/9303130), although the latter deviates from it. A modification is proposed to explain the Gaussian distribution with the A^<2/3> dependence.

• 社団法人日本物理学会の論文
• 1993-11-15

著者

• Umeki Makoto

  Department Of Physics Graduate School Of Science University Of Tokyo

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