Results 241 to 250 of about 57,630 (294)
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RANS/ILES Method Optimization for Effective Calculations on Supercomuter
Lobachevskii Journal of Mathematics, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Savin, G. I. +3 more
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Velocity–vorticity RANS turbulence modeling by boundary element method
Engineering Analysis with Boundary Elements, 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lupše, Janez +2 more
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RANS Solutions Using High Order Discontinuous Galerkin Methods
45th AIAA Aerospace Sciences Meeting and Exhibit, 2007We present a practical approach for the numerical solution of the Reynolds averaged Navier-Stokes (RANS) equations using high-order discontinuous Galerkin methods. Turbulence is modeled by the Spalart-Allmaras (SA) one-equation model. We introduce an artificial viscosity model for SA equation which is aimed at accommodating high-order RANS ...
Ngoc Nguyen +2 more
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Sensor Controlled Zonal RANS-LES Method
2013A sensor was developed to detect aerodynamic regions in the computational domain of aerodynamic relevant flows where a common RANS simulation does no longer provide physically reliable results. These regions of the computational domain were then treated with a higher order turbulence model to suppress the modeling error being introduced by standard ...
Benedikt Roidl +2 more
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Hybrid RANS-LES Methods with Continuous Mode Variation
2020The most convenient way to overcome the cost issue of large eddy simulation (LES) for high Reynolds number (Re) turbulent wall flows and the reliability problem of Reynolds-averaged Navier–Stokes (RANS) equations is the development of hybrid RANS-LES methods (Frohlich et al. in Prog. Aerosp. Sci.
S. Heinz +2 more
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RANS Simulation Around Airfoils Using Building-Cube Method
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010High Reynolds number viscous flows around airfoils are computed by solving the Reynolds-averaged Navier-Stokes equations using a block-structured Cartesian mesh approach named Building-Cube Method. Airfoil surface boundaries are represented by very fine staircase and the Spalart-Allmaras turbulence model is employed.
Shigenori Nishimoto +2 more
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2006
The present chapter concisely describes the hybrid methods as applied in FLOMANIA by different partners. In the first chapter the non-zonal DES method is described, whereas in the second chapter the zonal approaches are presented. Beginning with a description of the general idea of the method in the chapter on DES an overview of existing versions is ...
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The present chapter concisely describes the hybrid methods as applied in FLOMANIA by different partners. In the first chapter the non-zonal DES method is described, whereas in the second chapter the zonal approaches are presented. Beginning with a description of the general idea of the method in the chapter on DES an overview of existing versions is ...
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Interactive RANS/Laplace Method for Nonlinear Free Surface Flows
Journal of Engineering Mechanics, 1996A hybrid numerical method for the prediction of free surface flows including both nonlinear wave and viscous effects is presented. In this method, a zonal approach that combines a potential flow method for fully nonlinear free surface waves and a Reynolds-averaged Navier-Stokes (RANS) method for turbulent incompressible flow is used. The potential flow
Hamn-Ching Chen, Sing-Kwan Lee
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Simulation of wing-body junction flows with hybrid RANS/LES methods
International Journal of Heat and Fluid Flow, 2006Abstract In this paper, flows past two wing-body junctions, the Rood at zero angle of attack and NASA TN D-712 at 12.5° angle of attack, are investigated with two Reynolds-Averaged Navier-Stokes (RANS) and large eddy simulation (LES) hybrid methods.
Song Fu +4 more
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Hybrid RANS/LES Method for Turbulent Channel Flow
Transactions of the Korean Society of Mechanical Engineers B, 2002A channel flow with a high Reynolds number but coarse grids is numerically studied to investigate the prediction possibility of its turbulence which is three-dimensional and time-dependent. In the present paper, a Reynolds-Averaged Navier-Stokes (RANS) model, a Large Eddy Simulation (LES) and a Navier-Stokes equation with no model are tested with a new
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