Direct simulation of Burgulence
Abstract
Burgers' equation has been solved by a finite difference scheme at very low viscosity. In order to describe very accurately the very thin shock region a coordinate transformation has been used. The small number of grid points in the space together with an implicit non-iterative scheme for the time discretization allow to have the solution by a low computing time. The scheme has been tested by a steady case provided with analytical solution. In the unsteady dissipating case, from the velocity distribution in the physical space, the energy spectra and the energy transfer term have been yielded. The transfer energy term derived from the direct simulation allows to draw some understanding on the two-points closures models.
- Publication:
-
Computational Techniques and Applications: CTAC-83
- Pub Date:
- 1984
- Bibcode:
- 1984ctap.proc..641O
- Keywords:
-
- Burger Equation;
- Computational Fluid Dynamics;
- Turbulent Flow;
- Closure Law;
- Computational Grids;
- Energy Distribution;
- Finite Difference Theory;
- Temporal Distribution;
- Viscosity;
- Fluid Mechanics and Heat Transfer