Results 171 to 180 of about 471 (203)
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Modelling of subgrid-scale fluxes
Chaos, Solitons & Fractals, 2007Abstract Both necessary and sufficient conditions are derived in a systematic, rigorous way for a subgrid-scale (SGS) flux vector model to preserve the frame-indifference of the vector and to satisfy both the principle of material frame-indifference (PMFI) and the second law of thermodynamics.
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1998
In Chapters 3 and 4, we used the ensemble-mean procedure and divided a flow quantity into the large-scale part (mean field) and the fluctuation around it. A prominent feature of the resulting mean field is that its geometrical properties are dependent strongly on boundaries.
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In Chapters 3 and 4, we used the ensemble-mean procedure and divided a flow quantity into the large-scale part (mean field) and the fluctuation around it. A prominent feature of the resulting mean field is that its geometrical properties are dependent strongly on boundaries.
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A dynamic subgrid-scale tensorial Eddy viscosity model
Continuum Mechanics and Thermodynamics, 1999zbMATH Open Web Interface contents unavailable due to conflicting licenses.
GALLERANO, Francesco, E. NAPOLI
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Subgrid-Scale Models for Compressible Large-Eddy Simulations
Theoretical and Computational Fluid Dynamics, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Martín, M. Pino +2 more
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Subgrid-Scale Modeling of Magnetohydrodynamic Turbulence
Journal of the Physical Society of Japan, 1991A subgrid-scale (SGS) model is proposed to enable the numerical simulation of magnetohydrodynamic (MHD) turbulence at very high kinetic and magnetic Reynolds numbers in fusion plasma physics and astro/geophysics. The model supplements the SGS energy dissipation process with the aid of the SGS turbulent viscosity, the SGS anomalous resistivity, etc ...
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State of the Art in Subgrid-Scale Modeling
1982The need for turbulence models is well known. Only in the last few years has it become possible to compute any turbulent flow without models. We can now simulate homogeneous turbulent flows at moderate Reynolds numbers and are beginning to simulate simple inhomogeneous low-Reynolds-number flows. Although the range of flows accessible to direct or exact
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Subgrid-scale modeling of MHD turbulence
Numerical magnetohydrodynamic models (MHD) are often used to simulate the global interaction between the solar wind and the magnetosphere system. Increasingly, such MHD models require very computationally expensive, high numerical resolutions for realistic global magnetosphere simulations of multiscale turbulent plasma flows.Dmitri Kondrashov, Anthony Sciola
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A dynamic nonlinear subgrid-scale stress model
Physics of Fluids, 2005In this paper, a dynamic subgrid scale (SGS) stress model based on Speziale’s quadratic nonlinear constitutive relation [C. G. Speziale, J. Fluid Mech. 178, 459 (1987); T. B. Gatski and C. G. Speziale, J. Fluid Mech. 254, 59 (1993)] is proposed, which includes the conventional dynamic SGS model as its first-order approximation.
Wang, Bing-Chen, Bergstrom, Donald J.
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Subgrid-scale modelling at low mesh reynolds number
Theoretical and Computational Fluid Dynamics, 1996zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Structure of Turbulence and Subgrid-Scale Modeling.
1997Abstract : Transformation from homogeneous to nonhomogeneous turbulent flows is developed, based on some properties of the Navier-Stokes equations. This transformation is successfully applied to the turbulent wake, produced by a model-scale frigate.
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