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- W4317633850 abstract "Recent years have seen concentrated efforts to achieve coupled simulations between material response solver and hypersonic computational fluid dynamic model to improve predictions of thermal protection systems performances in atmospheric re-entry applications. Due to the difficulties to implement in a general validated framework the complexity of the physic at play, a large discrepancy exists in the literature on the coupling method employed, the assumptions made for the coupling and the type of boundary conditions implemented. More specifically, an implicit assumption usually made is to consider that material interface is in equilibrium, which permits discarding considerations of the transport of post-shock chemical species inside the material. In this work, we propose to reevaluate the relevance of this assumption by performing a tightly coupling simulations between the CFD solver HEGEL and the material response code PATO over all the set of primary variables. Preliminary results obtained shows that in absence of pyrolysis gas, the assumption of equilibrium interface leads to over-prediction of wall heat flux and temperature, whereas effective transport of dissociated species from the aerothermal environment toward the material depths are observed even at low temperature. The consequence and discussion of these results are discussed." @default.
- W4317633850 created "2023-01-21" @default.
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- W4317633850 date "2023-01-19" @default.
- W4317633850 modified "2023-10-18" @default.
- W4317633850 title "Effects of Non Equilibrium Surface Boundary Conditions for Material Response in Atmospheric Reentry Simulations" @default.
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- W4317633850 doi "https://doi.org/10.2514/6.2023-2029" @default.
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