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
More filters
Journal ArticleDOI
Comparison of Different Subgrid-Scale Models of Large Eddy Simulation for Indoor Airflow Modeling
TL;DR: In this paper, a large eddy simulation (LES) program was used to compute airflow in a room and a fast Fourier transformation (FFT) method and a conventional iteration method were used in solving the Poisson equation.
Journal ArticleDOI
Pneumatic transport of granular materials with electrostatic effects
Journal ArticleDOI
Aeolian deposition of dust over hills: the effect of dust grain size on the deposition pattern
TL;DR: In this paper, wind tunnel experiments were conducted to investigate the effects of topography on the grain size characteristics of aeolian dust deposits on three isolated hills having various size and aspect ratios and the longitudinal profile of the median grain diameter was investigated for each hill.
Journal ArticleDOI
A non-linear SGS model based on the spatial velocity increment. Application to LES of fully developed pipe flow and round turbulent jet.
TL;DR: In this paper, a new subgrid scale (SGS) modelling concept for large-eddy simulation (LES) of incompressible flow is proposed based on the three-dimensional spatial velocity increment.
Journal ArticleDOI
Computational Fluid Dynamics–Discrete Element Method Investigation of Pressure Signals and Solid Back-Mixing in a Full-Loop Circulating Fluidized Bed
TL;DR: In this article, the authors combine computational fluid dynamics combined with discrete element method to investigate the pressure signals and solid back-mixing behavior in a three-dimensional full-loop circulating fluidized bed operating in fast fluidization (FF) and dilute phase transport (DPT) regimes.
References
More filters
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.
Journal ArticleDOI
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.