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 Article
A Two Mixture Fraction Flamelet Model for Large Eddy Simulation of Turbulent Jet Flames with Inhomogeneous Inlets
Journal ArticleDOI
Numerical investigation of cone angle effect on the flow field and separation efficiency of deoiling hydrocyclones
TL;DR: In this paper, the effect of cone angle on the flow field and separation efficiency of deoiling hydrocyclones is investigated taking advantage of large eddy simulation, and the dynamic Smagorinsky is employed to determine the residual stress tensor of the continuous phase.
Journal ArticleDOI
Subgrid analysis of liquid jet atomization
TL;DR: In this paper, the feasibility of large eddy simulations of a liquid fuel injection in combustion chambers is studied, where a complete liquid jet atomization, from the injector down to the end of the liquid core, is simulated thanks to the coupling of both level set and VOF formulations.
Journal ArticleDOI
Molecular diffusion effects in LES of a piloted methane–air flame
TL;DR: In this paper, molecular diffusion effects in LES of a piloted methane-air (Sandia D) flame are investigated on a series of grids with progressively increased resolution, based on the mixture fraction approach combined with a steady flamelet model.
Journal ArticleDOI
Large-eddy simulation of the turbulent structure in compound open-channel flows
TL;DR: In this paper, a large-eddy simulation study has been undertaken to investigate the turbulent structure of open-channel flow in an asymmetric compound channel, with the partial cell treatment being implemented using a Cartesian grid structure to deal with the floodplain.
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.