Abstract
For the simulation of thermochemical non-equilibrium gas flows by direct simulation Monte Carlo (DSMC), a model based on maximum entropy (ME) is developed to calculate reaction probability and post reaction energy disposal. For non-reacting collisions, a generalized Larsen-Borgnakke method is employed for energy exchange. For reacting collisions, ME method is employed for energy exchange and chemical reaction. Hypersonic gas flow around a cylinder in high altitude and gas flow around a blunted cone of low density and high entropy are simulated and compared with results of DSMC method and HEG wind-tunnel data. The DSMC-ME is demonstrated reliable.
| Original language | English |
|---|---|
| Pages (from-to) | 139-144 |
| Number of pages | 6 |
| Journal | Jisuan Wuli/Chinese Journal of Computational Physics |
| Volume | 25 |
| Issue number | 2 |
| State | Published - Mar 2008 |
Keywords
- Chemical reaction
- Direct simulation Monte Carlo
- Maximum entropy (ME)
- Non-equilibrium