Development of a two-temperature open source CFD model for hypersonic reacting flows

Vincent Casseau, Thomas J. Scanlon, Richard E. Brown

Research output: Contribution to conferencePaper

5 Citations (Scopus)

Abstract

The highly complex flow physics that characterise re-entry conditions have to be reproduced by means of numerical simulations with both an acceptable level of accuracy and within reasonable timescales. In this respect, a new CFD solver, hyFoam, has been developed within the framework of the open-source CFD platform OpenFOAM for modelling hypersonic reacting flows. hyFoam has been successfully validated for two 0-degree adiabatic heat bath test cases and the limitations of a one-temperature CFD model have been highlighted. To cope with high-temperature gas chemistry, the internal energy has been decomposed into its elementary energy modes, thus introducing the translational-rotational and the vibrational temperatures. A two-temperature CFD model is being implemented in order to attain a better agreement between CFD and DSMC results. Validation of the code for a single species has been executed while mixture-related libraries are currently being developed. The vibrational-translational relaxation time formulation has also been presented and discussed.

Conference

Conference20th International Space Planes and Hypersonic Systems and Technologies Conference, MHYP15
CountryUnited Kingdom
CityGlasgow
Period6/07/159/07/15

Fingerprint

Reacting Flow
Hypersonic Flow
Hypersonic flow
Open Source
Computational fluid dynamics
Direct Simulation Monte Carlo
Reentry
Heat Bath
Energy
Relaxation Time
Temperature
Chemistry
Time Scales
Physics
Model
Internal
Numerical Simulation
Formulation
Relaxation time
Modeling

Keywords

  • open source
  • CFD modelling
  • hypersonic flows
  • thermodynamics

Cite this

Casseau, V., Scanlon, T. J., & Brown, R. E. (2015). Development of a two-temperature open source CFD model for hypersonic reacting flows. Article AIAA-3637. Paper presented at 20th International Space Planes and Hypersonic Systems and Technologies Conference, MHYP15, Glasgow, United Kingdom. https://doi.org/10.2514/6.2015-3637
Casseau, Vincent ; Scanlon, Thomas J. ; Brown, Richard E. / Development of a two-temperature open source CFD model for hypersonic reacting flows. Paper presented at 20th International Space Planes and Hypersonic Systems and Technologies Conference, MHYP15, Glasgow, United Kingdom.14 p.
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Casseau, V, Scanlon, TJ & Brown, RE 2015, 'Development of a two-temperature open source CFD model for hypersonic reacting flows' Paper presented at 20th International Space Planes and Hypersonic Systems and Technologies Conference, MHYP15, Glasgow, United Kingdom, 6/07/15 - 9/07/15, pp. Article AIAA-3637. https://doi.org/10.2514/6.2015-3637

Development of a two-temperature open source CFD model for hypersonic reacting flows. / Casseau, Vincent; Scanlon, Thomas J.; Brown, Richard E.

2015. Article AIAA-3637 Paper presented at 20th International Space Planes and Hypersonic Systems and Technologies Conference, MHYP15, Glasgow, United Kingdom.

Research output: Contribution to conferencePaper

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AB - The highly complex flow physics that characterise re-entry conditions have to be reproduced by means of numerical simulations with both an acceptable level of accuracy and within reasonable timescales. In this respect, a new CFD solver, hyFoam, has been developed within the framework of the open-source CFD platform OpenFOAM for modelling hypersonic reacting flows. hyFoam has been successfully validated for two 0-degree adiabatic heat bath test cases and the limitations of a one-temperature CFD model have been highlighted. To cope with high-temperature gas chemistry, the internal energy has been decomposed into its elementary energy modes, thus introducing the translational-rotational and the vibrational temperatures. A two-temperature CFD model is being implemented in order to attain a better agreement between CFD and DSMC results. Validation of the code for a single species has been executed while mixture-related libraries are currently being developed. The vibrational-translational relaxation time formulation has also been presented and discussed.

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Casseau V, Scanlon TJ, Brown RE. Development of a two-temperature open source CFD model for hypersonic reacting flows. 2015. Paper presented at 20th International Space Planes and Hypersonic Systems and Technologies Conference, MHYP15, Glasgow, United Kingdom. https://doi.org/10.2514/6.2015-3637