Zobrazeno 1 - 10
of 72
pro vyhledávání: '"J. A. Domaradzki"'
Autor:
J. Andrzej Domaradzki
Publikováno v:
Physical Review Fluids. 6
Is an autonomous large eddy simulation (LES) possible where a subgrid-scale (SGS) model is extracted in a bootstrapping way from LES fields? We show how the SGS energy transfer among resolved scales and its wave number distribution can be obtained fr
Autor:
J. Andrzej Domaradzki
Publikováno v:
Physical Review Fluids. 6
We show that the task of subgrid scale (SGS) modeling can be split into computing the total SGS energy transfer and determining its distribution among scales of motion. The former can be computed from energy transfers involving only resolved scales,
Publikováno v:
Geophysical Research Letters. 47
Autor:
Guangrui Sun, J. A. Domaradzki
Publikováno v:
Journal of Computational Physics. 359:380-408
In implicit large eddy simulations (ILES) numerical dissipation prevents buildup of small scale energy in a manner similar to the explicit subgrid scale (SGS) models. If spectral methods are used the numerical dissipation is negligible but it can be
Publikováno v:
Computers & Fluids. 154:256-272
The accuracy of direct and large-eddy simulations (DNS and LES) is typically assessed through a time consuming process of multiple runs and comparisons with available benchmark data. The goal is to achieve physically representative results by minimiz
Autor:
Francois Cadieux, J. A. Domaradzki
Publikováno v:
Journal of Turbulence. 17:954-965
Laminar separation bubbles develop over many blades and airfoils at moderate angles of attack and Reynolds numbers ranging from 104 to 105. More accurate simulation tools are necessary to enable higher fidelity design optimisation for these airfoils
Publikováno v:
Journal of Computational Physics. 397:108843
A previously developed method, which allows for the estimation of the numerical dissipation through a kinetic energy balance equation averaged over a sub-domain, was applied with success to Navier-Stokes solvers for compressible and incompressible fl
Publikováno v:
Optics express. 26(6)
Lidar is one of few remote sensing methods available to researchers to sense below the oceanic air-surface. We present polarimetric lidar measurements of turbulence in a laboratory generated turbulent flow. We found that the nearforward light depolar
Autor:
J. A. Domaradzki, Darek Bogucki
Publikováno v:
Journal of Turbulence. 16:1179-1198
Determining mixing coefficients in oceanographic flows relies on the form of temperature gradient spectra in turbulent water flows at large wavenumbers. Several recent investigations concluded that these spectra are best described by the functional f
Publikováno v:
Computers & Fluids. 114:84-97
We propose a method for quantifying the effective numerical dissipation rate and effective numerical viscosity in Computational Fluid Dynamics (CFD) simulations. Different from previous approaches that were formulated in spectral space, the proposed