The Modified Cumulant Expansion for Two-Dimensional Homogeneous Turbulence with a Mean Flow

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概要

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• Homogeneous two-dimensional turbulence in the presence of a mean flow isinvestigated using the modified zero-fourth-order-cumulant approximation. Thehomogeneity of turbulence is shown to be compatible with mean flows whichhave uniform velocity gradients, and among such flows the axisymmetric exten-sion flow perpendicular to the plane of turbulent motions and co-planar flowswith uniform velocity gradients are dealt with. In the former case, turbulence canbe isotropic and a stationary state with a finite energy and enstrophy is shown tobe possible. For the latter case, turbulence cannot be isotropic being distorted bythe mean flow and no stationary state is possible since the enstrophy decays intime irrespective of the presence of the mean flow.

• 社団法人日本物理学会の論文
• 1981-09-15

著者

• TATSUMI Tomomasa

  Department of Physics,Faculty of Science,University of Kyoto

• Tatsumi Tomomasa

  Department Of Physics Faculity Of Science University Of Kyoto

• Yanase Shinichiro

  Department Of Physics Faculty Of Science University Of Kyoto:engineering Mathematics School Of Engin

• Yanase Shinichiro

  Department Of Engineering Sciences Okayama University

• Yanase Shinichiro

  Department Of Engineering Sciences Faculty Of Engineering Okayama University

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