Numerical investigation of a hypersonic flow around a capsule in CO2–N2 environment
| Autor: | Zineddine Bouyahiaoui, Abderrahmane Zidane, Rabah Haoui |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Hypersonic speed
Materials science Kinetic model Hypersonic flow Flow (psychology) General Physics and Astronomy Non-equilibrium thermodynamics 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics 020303 mechanical engineering & transports 0203 mechanical engineering Heat flux 0103 physical sciences Vibrational energy relaxation Mathematical Physics |
| Zdroj: | European Journal of Mechanics - B/Fluids. 80:146-156 |
| ISSN: | 0997-7546 |
| DOI: | 10.1016/j.euromechflu.2019.12.009 |
| Popis: | A numerical investigation is conducted to study a viscous hypersonic flow around a capsule in chemical and vibrational nonequilibrium. A 16 − reaction kinetic model was implemented in our two-temperature Hypersonic Reacting Flow (HRF) code. The vibrational relaxation times are evaluated using Millikan & White semi-empiric formula along with Park’s correction for high temperature. The utilized 16 − reaction kinetic model demonstrates good modeling of the chemical nonequilibrium. The simulations are performed for three wall conditions: noncatalytic, equilibrium catalytic, and fully catalytic wall. Obtained results show a good agreement with the literature. The heat flux was found to vary from 10 to 41 W/cm 2 depending on the wall condition. |
| Databáze: | OpenAIRE |
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