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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Structural subgrid-scale modeling for large-eddy simulation: A review
Hao Lu,Christopher J. Rutland +1 more
TL;DR: Recent studies on structural subgrid scale modeling are reviewed, focusing on evaluating how well these models predict the effects of small scales, including a priori and a posteriori test results.
Journal ArticleDOI
Validation of a novel very large eddy simulation method for simulation of turbulent separated flow
Xingsi Han,Sinisa Krajnovic +1 more
TL;DR: In this paper, the authors describe the validation of a very LES (VLES) method for the simulation of turbulent separated flow, which is a unified simulation approach that can change seamlessly from Reynolds-averaged Navier-Stokes to DNS depending on the numerical resolution.
Journal ArticleDOI
Large-eddy simulation of magnetohydrodynamic turbulence in compressible fluid
TL;DR: In this article, a large eddy simulation (LES) technique for the study of compressible magnetohydrodynamic turbulence is developed, where the filtered equations of magnetodynamic dynamics of a compressible fluid are obtained with the use of a mass-weighted filtering procedure (Favre filtering).
Journal ArticleDOI
Evaluation of Smagorinsky‐based subgrid‐scale models in a finite‐volume computation
Petri Majander,Timo Siikonen +1 more
TL;DR: In this article, the Navier-Stokes equations are solved with three different grid resolutions by using a co-located finite-volume method, and the effect of the subgrid-scale model is reduced as the grid is refined.
Journal ArticleDOI
Simulation of airflow around rain gauges: Comparison of LES with RANS models
TL;DR: In this paper, the authors investigate the use of computational fluid dynamics (CFD) to calculate airflow around rain gauges by applying a high-resolution large eddy simulation (LES) model to determine the flow fields around a measuring system.
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.
Journal ArticleDOI
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.