Numerical solution to rarefaction or shock wave/duct area-change interaction
Abstract
The spatial distributions of pressure and velocity for the interactions of rarefaction waves with duct-area reductions and enlargements and of shock waves with duct-area enlargements are determined using both the random-choice method (RCM) developed by Greatrix and Gottlieb (1982), Gottlieb and Igra (1983), and Igra et al. (1984) and the generalized-Riemann-problem (GRP) method of Ben-Artzi and Falcovitz (1983 and 1984). The results are presented graphically, and the GRP method is shown to give practically noise-free solutions using grids of 120 or 180 points, with much smoother velocity distributions than those obtained using a 720-point grid with the RCM.
- Publication:
-
AIAA Journal
- Pub Date:
- August 1986
- DOI:
- 10.2514/3.9453
- Bibcode:
- 1986AIAAJ..24.1390I
- Keywords:
-
- Cauchy Problem;
- Computational Fluid Dynamics;
- Duct Geometry;
- Rarefied Gas Dynamics;
- Shock Wave Interaction;
- Computational Grids;
- Flow Velocity;
- Pressure Distribution;
- Fluid Mechanics and Heat Transfer