Numerical method for unsteady viscous-inviscid interaction to calculate buffeting
Abstract
In order to numerically simulate buffeting, the appearance of unsteady solutions self-induced by transonic separation in the case of a lift surface was analyzed using a viscous-nonviscous, unsteady, two dimensional method, consistent in time with strong coupling. The results show that the method can distinguish between steady and unsteady solutions, depending on the incidence of the profile. Comparisons between calculations and experiments for the RA16SC1 profile are very good for time and frequency distributions of unsteady pressure. The influence of initial conditions and the computational grid are discussed.
- Publication:
-
Final Report Office National d'Etudes et de Recherches Aerospatiales
- Pub Date:
- February 1987
- Bibcode:
- 1987oner.reptQ....G
- Keywords:
-
- Buffeting;
- Computational Fluid Dynamics;
- Computerized Simulation;
- Inviscid Flow;
- Viscous Flow;
- Boundary Layer Separation;
- Lift Devices;
- Transonic Flow;
- Wind Tunnel Tests;
- Fluid Mechanics and Heat Transfer