Abstract
The Adaptive Local Deconvolution Method (ALDM) is a new nonlinear discretization scheme designed for Implicit Large-Eddy Simulation (ILES). Free parameters of a solution-adaptive deconvolution operator allow to adjust the numerical truncation error which acts as implicit subgrid-scale (SGS) model. To assign physically appropriate values to these parameters the spectral numerical viscosity is analyzed. By an automatic optimization employing an evolutionary algorithm a set of parameters was found which yields an excellent spectral match for the numerical viscosity with theoretical predictions. Computational results for forced and decaying three-dimensional homogeneous isotropic turbulence show an excellent agreement with theory and experimental data.
Original language | English |
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Pages | 805-810 |
Number of pages | 6 |
State | Published - 2005 |
Event | 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 - Williamsburg, VA, United States Duration: 27 Jun 2005 → 29 Jun 2005 |
Conference
Conference | 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 |
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Country/Territory | United States |
City | Williamsburg, VA |
Period | 27/06/05 → 29/06/05 |