Journal ArticleDOI
A proposed modification of the Germano subgrid‐scale closure method
TLDR
In this paper, the subgrid-scale closure method developed by Germano et al. is modified by use of a least squares technique to minimize the difference between the closure assumption and the resolved stresses.Abstract:
The subgrid‐scale closure method developed by Germano et al. is modified by use of a least squares technique to minimize the difference between the closure assumption and the resolved stresses. This modification removes a source of singularity and is believed to improve the method’s applicability.read more
Citations
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Development of a local subgrid diffusivity model for large-eddy simulation of buoyancy-driven flows: application to a square differentially heated cavity
TL;DR: In this paper, a local subgrid diffusivity model for the large-eddy simulation of natural-convection flows in cavities is presented. But this model does not make use of the Reynolds analogy with a constant subgrid Prandtl number.
Journal ArticleDOI
Development of large eddy simulation for modeling of decaying compressible magnetohydrodynamic turbulence
TL;DR: In this paper, the results of numerical computations for large eddy simulation are compared with results of direct numerical simulation of three-dimensional compressible magnetohydrodynamic turbulence under various similarity parameters, namely, magnetic Reynolds numbers, hydrodynamic Reynolds numbers and Mach numbers.
Journal ArticleDOI
A two mixture fraction flamelet model for large eddy simulation of turbulent flames with inhomogeneous inlets
TL;DR: In this article, a revised flamelet/progress variable (FPV) model in which two mixture fractions are defined has been developed to address the limitations of single mixture fraction FPV models that presume a single, compositionally uniform fuel stream.
Journal ArticleDOI
Sub-grid scale model classification and blending through deep learning
TL;DR: In this article, the use of machine learning for spatio-temporally dynamic turbulence model classification and hybridization for large eddy simulations (LES) of turbulence is described.
Journal ArticleDOI
Flow topologies and turbulence scales in a jet-in-cross-flow
TL;DR: In this article, a detailed analysis of the flow topologies and turbulence scales in the jet-in-cross-flow experiment of Su and Mungal is performed using the Large Eddy Simulation (LES) technique with a highly resolved grid and time-step and well controlled boundary conditions.
References
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Journal ArticleDOI
General circulation experiments with the primitive equations
TL;DR: In this article, an extended period numerical integration of a baroclinic primitive equation model has been made for the simulation and the study of the dynamics of the atmosphere's general circulation, and the solution corresponding to external gravitational propagation is filtered by requiring the vertically integrated divergence to vanish identically.
Journal ArticleDOI
A dynamic subgrid‐scale eddy viscosity model
TL;DR: In this article, a new eddy viscosity model is presented which alleviates many of the drawbacks of the existing subgrid-scale stress models, such as the inability to represent correctly with a single universal constant different turbulent fields in rotating or sheared flows, near solid walls, or in transitional regimes.
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A numerical study of three-dimensional turbulent channel flow at large Reynolds numbers
TL;DR: In this article, the three-dimensional, primitive equations of motion have been integrated numerically in time for the case of turbulent, plane Poiseuille flow at very large Reynolds numbers.
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A dynamic subgrid‐scale model for compressible turbulence and scalar transport
TL;DR: Germano et al. as discussed by the authors generalized the dynamic subgrid-scale (SGS) model for the large eddy simulation (LES) of compressible flows and transport of a scalar.
On the application of the eddy viscosity concept in the Inertial sub-range of turbulence
TL;DR: In this paper, it was shown that an eddy diffusion hypothesis for use in numerical solutions of turbulent flow problems is consistent with the existence of an inertial subrange at the smallest resolvable scale of the numerical model.