Results 151 to 160 of about 591 (174)
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Generalized Smagorinsky model in physical space
Computers & Fluids, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Colosqui, Carlos E., Oberai, Assad A.
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British Journal of Mathematics & Computer Science, 2015
A large eddy simulation (LES) of a turbulent channel flow is performed by using the Smagorinsky subgrid scale model and the effects of Smagorinsky constants in LES are discussed. The computation is performed in the domain of δ δ 2 δ 2 π × × π with 32 64 32 × × grid points at a Reynolds number Reτ = 590 based on the channel half width, δ and wall shear ...
M. Uddin, M. Mallik
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A large eddy simulation (LES) of a turbulent channel flow is performed by using the Smagorinsky subgrid scale model and the effects of Smagorinsky constants in LES are discussed. The computation is performed in the domain of δ δ 2 δ 2 π × × π with 32 64 32 × × grid points at a Reynolds number Reτ = 590 based on the channel half width, δ and wall shear ...
M. Uddin, M. Mallik
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Accounting for Scale-Dependence in the Dynamic Smagorinsky Model
1999The dynamic model has been very successful in Large-Eddy Simulation of a variety of turbulent flows. The model makes the crucial assumption that the coefficient is scale-invariant, which is reasonable in the inertial range of turbulence. Surprisingly, the dynamic model’s success has occurred even in flows where the grid-scale is not in an ideal ...
Meneveau, C. +2 more
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Reduction of the Germano-identity error in the dynamic Smagorinsky model
Physics of Fluids, 2009We revisit the Germano-identity error in the dynamic modeling procedure in the sense that the current modeling procedure to obtain the dynamic coefficient may not truly minimize the error in the mean and global sense. A “corrector step” to the conventional dynamic Smagorinsky model is proposed to obtain a corrected eddy viscosity which further reduces ...
Park, Noma, Mahesh, Krishnan
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Three Iterative Finite Element Methods for the Stationary Smagorinsky Model
East Asian Journal on Applied Mathematics, 2014Summary: Three iterative stabilised finite element methods based on local Gauss integration are proposed in order to solve the steady two-dimensional Smagorinsky model numerically. The Stokes iterative scheme, the Newton iterative scheme and the Oseen iterative scheme are adopted successively to deal with the nonlinear terms involved.
Su, Haiyan +3 more
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Finite Element Approximation of the Steady Smagorinsky Model
2014This chapter is devoted to the numerical approximation of the Smagorinsky model, in steady regime. We consider this model as a regularization of Navier–Stokes equations that includes the modeling of eddy diffusion effects by means of a discrete viscosity. We introduce Lagrange finite element spaces adapted to approximate the slip condition.
Tomás Chacón Rebollo +1 more
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A dynamic Smagorinsky model with dynamic determination of the filter width ratio
Physics of Fluids, 2004Various low-pass, spatial test filters specific to dynamic model large-eddy simulation (LES) on finite element topologies are proposed and analyzed. A number of simulations of decaying isotropic turbulence are performed using the stabilized finite element method of Whiting and Jansen with the purpose of understanding the dependence of the dynamic model
Tejada-Martínez, Andrés E. +1 more
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Finite Element Approximation of Evolution Smagorinsky Model
2014In this chapter we deal with the numerical approximation of the unsteady Navier–Stokes equations in turbulent regime by means of the SM. As in the steady case, we shall consider this model as intrinsically discrete. We consider a semi-implicit discretization in time by the Euler method as a model time discretization.
Tomás Chacón Rebollo +1 more
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Extension of the Smagorinsky Subgrid Stress Model to Anisotropic Filters
AIAA SCITECH 2023 Forum, 2023Aviral Prakash +2 more
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