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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Large eddy simulation of the turbulent flow past a backward-facing step with heat transfer and property variations
TL;DR: In this paper, the heat transfer and fluid mechanics of a turbulent separating and reattaching flow past a backward-facing step are studied using large eddy simulation using a fully coupled, collocated-grid, low-Mach number preconditioned, compressible formulation employing central differences.
Journal ArticleDOI
Large eddy simulation with a dynamic subgrid-scale model of turbulent heat transfer in an orthogonally rotating rectangular duct with transverse rib turbulators
Akira Murata,Sadanari Mochizuki +1 more
TL;DR: In this article, the effects of transverse ribs, the Coriolis force, and cross-sectional aspect ratios on turbulence were investigated in a large eddy simulation, and the results reproduced the experimentally observed high heat transfer areas: in front of the rib on the rib-roughened walls and around the ribs on the smooth side walls.
Journal ArticleDOI
On a Subgrid-Scale Heat Flux Model for Large Eddy Simulation of Turbulent Thermal Flow
Shia-Hui Peng,Lars Davidson +1 more
TL;DR: In this paper, a non-linear subgrid-scale heat flux model is introduced in large eddy simulation for turbulent thermal flows, which is equivalent to using a tensor diffusivity.
Journal ArticleDOI
A review of computational fluid dynamics (CFD) simulations of the wind flow around buildings for urban wind energy exploitation
Francisco Toja-Silva,Francisco Toja-Silva,Takaaki Kono,Carlos Peralta,Oscar Lopez-Garcia,Jia Chen +5 more
TL;DR: In this paper, a review on computational fluid dynamics (CFD) applied to urban wind energy exploitation is presented, which comprises technical CFD aspects relevant for this application and the current state-of-the-art in building aerodynamics applied to Urban wind energy.
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Implementation and Evaluation of Dynamic Subfilter-Scale Stress Models for Large-Eddy Simulation Using WRF*
TL;DR: In large-eddy simulations of neutral atmospheric boundary layer flow over both a flat terrain and a two-dimensional symmetrical transverse ridge, vertical profiles of mean wind speed from the newly implemented dynamic models show the best agreement with the simila...
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.
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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.