Abstract
Numerical simulation is carried out for obtaining a transient flowfield in an expansion-tube. In this study, the Euler equations in an axisymmetric form are integrated to reproduce flows in the free-piston-driven section, while the Navier-Stokes equations with nonequilibrium thermochemical reactions are solved in the shock/acceleration tube sections. The motion of piston is included in the calculation by solving the equation of motion. It is found that accounting for nonequilibrium thermo-chemical reactions is crucial for obtaining a better agreement of shock velocity as well as pressure value both in shock tube and acceleration tube with that obtained in experiment. The obtained flowfield indicates that the test gas region is significantly perturbed either by the deformed contact surface separating from the accelerated gas region, or by mixing of driver gas occurring at the interface separating from the driver gas region.
| Original language | English |
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| Publication status | Published - 2001 Dec 1 |
| Event | 35th AIAA Thermophysics Conference 2001 - Anaheim, CA, United States Duration: 2001 Jun 11 → 2001 Jun 14 |
Other
| Other | 35th AIAA Thermophysics Conference 2001 |
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| Country/Territory | United States |
| City | Anaheim, CA |
| Period | 01/6/11 → 01/6/14 |
ASJC Scopus subject areas
- Aerospace Engineering
- Mechanical Engineering
- Condensed Matter Physics