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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Numerical simulation of the flow around a circular cylinder at high Reynolds numbers
TL;DR: In this article, the viability and accuracy of large-eddy simulation with wall modeling for high Reynolds number complex turbulent flows is investigated by considering the flow around a circular cylinder in the supercritical regime.
Journal ArticleDOI
Large-eddy simulation of a very large wind farm in a stable atmospheric boundary layer
Hao Lu,Fernando Porté-Agel +1 more
TL;DR: In this paper, the authors integrated a 3D large-eddy simulation with an actuator line technique to examine the characteristics of wind-turbine wakes in an idealized wind farm inside a stable boundary layer (SBL).
Journal ArticleDOI
Prediction of wind environment and thermal comfort at pedestrian level in urban area
Akashi Mochida,Isaac Lun +1 more
TL;DR: This paper reviews the recent developments in CWE research for predicting the pedestrian level wind and thermal environments in urban areas and achievements in the field of modeling canopy flows for reproducing the aerodynamic and thermal effects of trees, buildings and automobiles are outlined.
Journal ArticleDOI
Large eddy simulations of smoke movement
TL;DR: In this paper, an approach to field modeling of fire phenomena in enclosures is presented, where conservation equations of mass, momentum and energy are calculated with sufficient temporal and spatial resolution to yield a truly three-dimensional, dynamic picture of the fire plume and its surroundings.
Journal ArticleDOI
A fully discrete, kinetic energy consistent finite-volume scheme for compressible flows
TL;DR: A robust, implicit, low-dissipation method suitable for LES/DNS of compressible turbulent flows is discussed, which is stable without the addition of any explicit dissipation terms at very high Reynolds numbers for flows without shocks.
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.