Numerical simulation of a non-charring ablator in high enthalpy flows by means of a unified flow-material solver
(2017) 47th AIAA Thermophysics Conference — Location: Denver, Colorado
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- Abstract
- The accurate modeling of the interaction between chemically reactive boundary layers and ablative porous materials is one of the most dicult challenges preventing reliable predictions of the heat ux during atmospheric entries of spacecraft. The unied approach which uses a strong coupled modelization of the ow and the highly porous material has been shown to be necessary in order to capture with high accuracy these interactions in reaction limited regime. In this work, the replication of a Plasmatron experiment with carbon preform material using this methodology has shown that this method allows also to simulate diusion limited regime giving satisfactory agreements with the experimental data. The thickness of the ow/material interface region has been proved to be a sensitive parameter to guarantee the stability of the simulations and the correct prediction of the quantities of interest.
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Citations
Schrooyen, P., Coheur, J., Turchi, A., Hillewaert, K., Chatelain, P., & Magin, T. (2017). Numerical simulation of a non-charring ablator in high enthalpy flows by means of a unified flow-material solver. AIAA Aviation Forum, 2017(1), 3352. https://doi.org/10.2514/6.2017-3352 (Original work published 2017)