Mechanism in Leading to Richardson's Four-Thirds Law

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概要

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• For the relative cliffusion of a pair particles in turbulent flow, the mechanism inleading to Richardson's four-third law is studied autalytically and nunaerically by us-ing the effective Hamiltonian method. Vx'ith this anal)'sis, iua connection xvitla tlteKolmogorov's spectrum and t1?e scaling law, it is shccxvua tlaat the main contribution tothe Richardsoua's law comes from a relatively small region of the inertial range, andthere is a considerably large contribution from 1110 vortexes w1?ose diameters arelarger tlaan tlae relative distance between a pair of p;trticles. It is also reported that tlaerange of Richardson's law in the smaller scales in the turbulence witla a multi-rangespectrum is extended toward large scales beyond a typical length in the smaller scales.IRichardson's four-thirds law, turbulevat flow,the effective Hamiltonian method, l1 relative diffusion.l

• 社団法人日本物理学会の論文
• 1992-08-15

著者

• Nakao Hajime

  School Of Science Kwansei Gakuin University

• Imamura Tsutomu

  School Of Science Kwansei Gakuin University

• Imamura Tsutomu

  School of Science,Kwansei Gakuin University

関連論文

• Time Dependence of Eulerian Velocity Correlation for the Duration of Richardson's Law
• An Exact Gaussian Solution for the Two-Dimensional Ideal Incompressible Magnetohydrodynamic Turbulence
• Two-Time Correlation Function of the Time-Dependent Ideal Random Function
• Relative Diffusion of a Pair of Fluid Particles in Turbulence
• Mechanism in Leading to Richardson's Four-Thirds Law
• Turbulent Flows near Flat Plates
• Evaluation of Functional Integral
• The Lagrangian Auto-Velocity Correlation Function

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