Titlebook: Statistical Theories and Computational Approaches to Turbulence; Modern Perspectives Yukio Kaneda (Professor),Toshiyuki Gotoh (Professo Co

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l-scale geophysical flows and complex engineering flowsThis volume contains the papers presented at the workshop on Statistical The- ories and Computational Approaches to Turbulence: Modern Perspectives and Applications to Global-Scale Flows, held October 10-13, 2001, at Nagoya Uni- versity, Nagoya,

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Linear Processes in Stratified Turbulence with Rotation or Mean Shear the energy spectra so that they are more localized to smaller stream-wise wavenumbers (.. → 0). The results show that neither rotation nor mean shear affects the wave number components which dominate the buoyancy oscillation of the energy and the flux.

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Subgrid Models for Two-Dimensional Turbulence based on Lagrangian Spectral Theorypredicted by the MLRA-LES is also found to be very similar to that of the DNS. Some simplifications of the eddy damping factor are proposed for application to global-scale flow prediction. One model is found to give predictions of the enstrophy spectrum and error growth which are comparable to the MLRA-LES results.

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Computational Challenges for Global Dynamics of Fully Developed Turbulence in the Context of Geophysnageable size. In order for numerical simulations to be of use in advancing our understanding of geophysical turbulence, they must complement and make use of experiments, observations and theoretical advances. One is thus compelled to tackle numerical simulations at the highest resolution possible t

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Structural and Statistical Aspects of Stably Stratified Turbulenceropic turbulence with the same initial conditions. We offer an explanation in terms of the diminution of energy transfer to small scales because of phase mixing nature of gravity waves. Structures in stratified flows (pancakes) are distinctly different from those of isotropic turbulence (vortex tube

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