Numerical integration of the unsteady-flow equations for a two-dimensional supersonic free jet
Abstract
The temporal evolution of a free supersonic jet in undisturbed air is characterized numerically from the emergence of the flow from the nozzle until the jet is fully formed, for both inviscid and viscous flow. The Euler and Navier-Stokes equations are transformed using a time-invariant coordinate space and integrated by the lambda scheme of Moretti (1979). Shock-wave behavior is determined by the shock-fitting approach. The computer program is outlined; input parameters are the initial contour of the shock wave, the flow conditions in the nozzle, the pressure and entropy of the surroundings, the Reynolds and Prandtl numbers, and the wall temperature (for viscous flow). The results of two sample calculations are presented and discussed.
- Publication:
-
Forschung im Ingenieurwesen
- Pub Date:
- 1983
- Bibcode:
- 1983F&I....49...85W
- Keywords:
-
- Computational Fluid Dynamics;
- Flow Equations;
- Free Jets;
- Numerical Integration;
- Supersonic Jet Flow;
- Unsteady Flow;
- Euler Equations Of Motion;
- Inviscid Flow;
- Navier-Stokes Equation;
- Nozzle Flow;
- Two Dimensional Flow;
- Viscous Flow;
- Fluid Mechanics and Heat Transfer