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Unsteady N-S Calculations Using a Dual-Time Stepping Method for Airfoil Oscillating at High Angle of Attack

Song, W. and Yang, Y. and Pahlke, K. and Qiao, Z. (1998) Unsteady N-S Calculations Using a Dual-Time Stepping Method for Airfoil Oscillating at High Angle of Attack. 3rd International Conference on Fluid Mechanics, Beijing, 1998.

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Abstract

The existing code of DLR using the dual time method for solving the unsteady two-dimensional Navier-Stokes equations is improved to calculate the unsteady motion of NACA0012 airfoil oscillating at high angle of attack. Results obtained from single grid and multigrid calculations are given and compared with the experimental data. The influence of the magnitude of physical time step, the inner iteration tolerance, the artificial dissipative terms, the different farfield boundary treatments, the transition position and the coefficients for the smoothing of the coarse grid corrections of the multigrid scheme, the cycle type and number of levels in multigrid calculations is discussed in this report.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Unsteady N-S Calculations Using a Dual-Time Stepping Method for Airfoil Oscillating at High Angle of Attack
Authors:
AuthorsInstitution or Email of Authors
Song, W.UNSPECIFIED
Yang, Y.UNSPECIFIED
Pahlke, K.UNSPECIFIED
Qiao, Z.UNSPECIFIED
Date:1998
Status:Published
Keywords:Dynamic Stall, CFD, Navier-Stokes equations, dual-time method
Event Title:3rd International Conference on Fluid Mechanics, Beijing, 1998
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L DT - Drehflüglertechnologien
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: Claudia Grant
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 20:03

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