Statistical Laws of Velocity Circulation in Homogeneous Turbulence : Classical Phenomenology and Applications

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概要

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• Statistical properties of the velocity circulation in turbulence are studied using data from direct numerical simulation (DNS) of Navier-Stokes equations. The probability density function (PDF) of circulation depends on the the area of the closed contour along which the circulation is calculated. The vorticity field obtained in DNS is decomposed into the strong component and the weak component. It is found that the circulation associated with the weak component is approximately self-similar with respect to the area a. The circulation associated with the strong component is modeled appropriately by a compound Poisson statistics of vortex filaments in the asympotic limit of the large area a.

• 社団法人日本物理学会の論文
• 2000-06-15

著者

• Hatakeyama N

  Tohoku Univ. Sendai Jpn

• Hatakeyama Nozomu

  Institute Of Fluid Science Tohoku University

• YOSHIDA Kyo

  Department of Physics, Gradate School of Science, University of Tokyo

• Yoshida Kyo

  Department Of Physics Gradate School Of Science University Of Tokyo

関連論文

• Statistical Laws of Velocity Circulation in Homogeneous Turbulence : Classical Phenomenology and Applications
• Statistical laws and vortex structures in fully developed turbulence

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