Parametric Comparison of the Park and MMT Chemical Kinetics Models with Multiple Freestream Speeds. Chaudhry, R. S. & Boyd, I. D. In AIAA AVIATION 2023 Forum, 2023. AIAA Paper 2023-3621. _eprint: https://arc.aiaa.org/doi/pdf/10.2514/6.2023-3621doi abstract bibtex View Video Presentation: https://doi.org/10.2514/6.2023-3621.vidThe Modified Marrone-Treanor (MMT) chemical kinetics model, developed using quantum chemistry data, is compared to the Park model for hypersonic blunt cones. A variety of flow configuration parameters are considered: nose radii between 1 and 10 cm, freestream altitudes between 0 and 70 km, and freestream speeds between 3 and 6 km/s. Consistent with previous work, lower altitude conditions are dominated by the dynamics of recombination and yield up to 30% higher stagnation heating with Park than MMT, whereas higher altitudes are dominated by dissociation and yield up to 15% lower heating with Park than MMT. Freestream speeds of 4 and 5 km/s exhibit the largest difference in stagnation-point heating due to the dominance of oxygen dissociation in these flows. Consistency between the present results and Fay and Riddell’s dissociation enthalpy is also demonstrated. This work describes the effect of gas-phase chemical kinetics on design-relevant flow configurations and the wide range of parameters considered can target experimental validation efforts.
@inproceedings{chaudhry2023,
title = {Parametric {Comparison} of the {Park} and {MMT} {Chemical} {Kinetics} {Models} with {Multiple} {Freestream} {Speeds}},
doi = {10.2514/6.2023-3621},
abstract = {View Video Presentation: https://doi.org/10.2514/6.2023-3621.vidThe Modified Marrone-Treanor (MMT) chemical kinetics model, developed using quantum chemistry data, is compared to the Park model for hypersonic blunt cones. A variety of flow configuration parameters are considered: nose radii between 1 and 10 cm, freestream altitudes between 0 and 70 km, and freestream speeds between 3 and 6 km/s. Consistent with previous work, lower altitude conditions are dominated by the dynamics of recombination and yield up to 30\% higher stagnation heating with Park than MMT, whereas higher altitudes are dominated by dissociation and yield up to 15\% lower heating with Park than MMT. Freestream speeds of 4 and 5 km/s exhibit the largest difference in stagnation-point heating due to the dominance of oxygen dissociation in these flows. Consistency between the present results and Fay and Riddell’s dissociation enthalpy is also demonstrated. This work describes the effect of gas-phase chemical kinetics on design-relevant flow configurations and the wide range of parameters considered can target experimental validation efforts.},
urldate = {2023-08-08},
booktitle = {{AIAA} {AVIATION} 2023 {Forum}},
publisher = {AIAA Paper 2023-3621},
author = {Chaudhry, Ross S. and Boyd, Iain D.},
year = {2023},
doi = {10.2514/6.2023-3621},
note = {\_eprint: https://arc.aiaa.org/doi/pdf/10.2514/6.2023-3621},
}
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