Effects of boundary conditions in numerical experiments for turbulent flows
Abstract
With the increase of computer speed and capacity, the numerical prediction method, which was developed mainly in the field of aircraft technology, is gradually being applied to automotive aerodynamics. However, the large wake behind a road vehicle necessitates more elaborate computational techniques for the selection of turbulence model and boundary condition. The effects of boundary conditions on the numerical turbulent flow around a road vehicle are preliminarily analyzed using the finite difference method and the kappa - epsilon model. It is found from the calculations that the stability and behavior of numerical solution depends strongly on the boundary conditions of turbulence energy and dissipation.
- Publication:
-
3rd NAL Symposium on Aircraft Computational Aerodynamics
- Pub Date:
- November 1985
- Bibcode:
- 1985acae.proc..147K
- Keywords:
-
- Automobiles;
- Boundary Conditions;
- Boundary Value Problems;
- Computational Fluid Dynamics;
- Prediction Analysis Techniques;
- Turbulent Flow;
- Energy Dissipation;
- Finite Difference Theory;
- K-Epsilon Turbulence Model;
- Numerical Analysis;
- Stability;
- Fluid Mechanics and Heat Transfer