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Numerical simulation of hypersonic flow with non-equilibrium chemical reactions around sphere.
- Source :
-
Acta Astronautica . May2022, Vol. 194, p468-479. 12p. - Publication Year :
- 2022
-
Abstract
- High-temperature effects have a significant impact on the characteristics of aircraft moving at super- and hypersonic speeds. Due to the complexity of setting up a physical experiment, methods of mathematical modelling play an important role in finding the characteristics of hypersonic aircraft. Numerical modelling of super- and hypersonic air flow around the sphere is carried out taking into account high-temperature effects and non-equilibrium chemical reactions. The mathematical model includes equations of gas dynamics, equations of the turbulence model and equations of chemical kinetics. A critical review of the various models that are used to find the stand-off distance is provided. The results of numerical calculations on the distribution of flow quantities in the shock layer and the stand-off distance at different freestream Mach numbers are presented. The results of numerical calculations in a wide range of freestream Mach numbers are compared with the experimental data and computational results of other researchers. Standoff distance is computed at various Mach number and heights during a flight in the atmosphere at hypersonic speed. • Flow simulation of hypersonic flow around sphere is performed. • Stand-off distance have been computed for various models and inlet conditions. • Results obtained are compared with experimental and computational data. • Effect of non-equilibrium chemical reactions on flow quantities is reported. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00945765
- Volume :
- 194
- Database :
- Academic Search Index
- Journal :
- Acta Astronautica
- Publication Type :
- Academic Journal
- Accession number :
- 155941072
- Full Text :
- https://doi.org/10.1016/j.actaastro.2021.10.008