Abstract
An uncoupled method was introduced to simulate numerically nonequilibrium flow which had the stiffness problem. Mixing reaction flows in COIL are simulated by solving the Reynolds averaged Navier-Stokes equations and species continuity equations. Equations are solved using four-stage Runge-Kutta time-stepping scheme on structured viscous mesh. The simulations are carried out with AUSM+up scheme. The method employs finite-rate chemistry and thermodynamic perfect gas properties for chemical reaction. The stiffness problem of chemical source is overcome by a semi-implicit method. The COIL numerical results are in good agreement with the results of AeroSoft's GASP[8].
| Original language | English |
|---|---|
| Pages (from-to) | 227-230 |
| Number of pages | 4 |
| Journal | Kongqi Donglixue Xuebao/Acta Aerodynamica Sinica |
| Volume | 26 |
| Issue number | 2 |
| State | Published - Jun 2008 |
Keywords
- COIL (chemical oxygen iodine laser)
- Nonequilibrium flow
- Uncoupled method