Time dependent, compressible simulations of shear flows: Tests of outflow boundary conditions
Abstract
Time dependent compressible numerical simulations of the onset of the Kelvin-Helmholtz instability in shear flows are described. The calculations performed use the Flux-Corrected Transport algorithm for solving the conservation equations for mass, momentum, energy on a two dimensional grid. A method of implementing outflow boundary conditions is discussed and detailed benchmarks are given for two problems: a round jet flowing into a quiescent background gas and a diaphragm in a barrel. Finally, two calculations are described: one of a round jet surrounded by a slower co-flowing gas and the other of a splitter plate.
- Publication:
-
Naval Research Lab. Report
- Pub Date:
- December 1983
- Bibcode:
- 1983nrl..reptT....B
- Keywords:
-
- Boundary Conditions;
- Compressible Flow;
- Computerized Simulation;
- Conservation Equations;
- Jet Mixing Flow;
- Shear Properties;
- Time Dependence;
- Turbulent Jets;
- Algorithms;
- Fluid Dynamics;
- Numerical Analysis;
- Shear Flow;
- Stability;
- Two Dimensional Flow;
- Vortices;
- Fluid Mechanics and Heat Transfer