Theoretical Investigation of an Eddy-Viscosity-Type Representation of the Reynolds Stress

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概要

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• An eddy-viscosity-type representation of the Reynolds stress is investigated with the aid of a two-scale direct-interaction approximation (TSDIA). The second- and third-order analyses of the TSDIA are applied to the Reynolds stress. Using these results, the nonlinear part of the Reynolds stress and the turbulent-energy dissipation rate equation are discussed in detail. Non-equilibrium effects of turbulence are also incorporated into the nonlinear part in addition to the simple eddy-viscosity one. Further, using the experimental data, we confirm that the K-ε model is improved by the non-equilibrium property.

• 社団法人日本物理学会の論文
• 1994-06-15

著者

• Okamoto Masayoshi

  Institute Of Industrial Science University Of Tokyo

関連論文

• Theoretical Turbulence Modelling of Homogeneous Decaying Flow in a Rotating Frame
• Theoretical Investigation of Energy and Thermal Intensity Spectra in Buoyancy-Driven Turbulent Flows
• Theoretical Modelling of Buoyancy-Driven Turbulent Flows
• Theoretical Investigation of an Eddy-Viscosity-Type Representation of the Reynolds Stress

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