Titlebook: Quality and Reliability of Large-Eddy Simulations; Johan Meyers,Bernard J. Geurts,Pierre Sagaut Book 2008 Springer Science+Business Media

DEFER

On the Application of Wavelets to LES Sub-grid Modellingulation equations. This new approach is called WaveLES. A numerical framework for the solution of the projected equations is developed for one and three-dimensional problems. The WaveLES method is assessed in . tests on an atmospheric turbulent time series, and a direct numerical simulation. . tests

CRACY

Analysis of Truncation Errors and Design of Physically Optimized Discretizationsror of the numerical discretization. Recent analyzes indicate that for certain discretizations and certain flow configurations the truncation error itself can act as implicit SGS model. In this paper, we explore how implicit SGS models can be derived systematically and propose a procedure for design

rectum

相容

Performance Assessment of a New Advective Subgrid Model Through Two Classic Benchmark Test Casesulation. Rather than modeling the subgrid tensor that appears in the LES formulation as is commonly done, we directly model the subgrid force vector, imposing two basic requirements. First, it must act only on the smallest scales. Second, it must be of an advective nature, which means it must have a

BABY

Negligible

flaunt

Analysis of Uniform and Adaptive LES in Natural Convection Flow the calculation of the model and discretisation error in a turbulent natural convection flow in a tall cavity. It is based on uniform grid refinement and explicit values are given for the error components. In the second part we apply for the same problem local grid adaptation using four different a

換話題

Influence of Time Step Size and Convergence Criteria on Large Eddy Simulations with Implicit Time Did the convergence criterion are considered. The influence of these parameters on mean values and computational time are presented and discussed. The computations were carried out for the well known test case “Periodic flow over a 2D hill”.

Hdl348

Assessment of LES Quality Measures Using the Error Landscape Approachposed in the literature. The Smagorinsky subgrid model was adopted and the eddy-viscosity ‘parameter’ $C.$ and the grid spacing $h$ were varied systematically. It is shown that two methods qualitatively predict the basic features of an error landscape including an optimal refinement trajectory. Thes

Pathogen

Analysis of Numerical Error Reduction in Explicitly Filtered LES Using Two-Point Turbulence Closurefferences of order 2 to 14, and for optimized differentiation schemes. An EDQNM-LES model is derived to evaluate numerical errors, namely the aliasing and the differentiation errors. The results show that the aliasing errors are negligible whereas the interactions between wavenumbers close to the me