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Full-Text Articles in Aerospace Engineering
Assessment Of Carbon-Phenolic-In-Air Chemistry Models For Atmospheric Reentry, Alexandre Martin, Iain D. Boyd
Assessment Of Carbon-Phenolic-In-Air Chemistry Models For Atmospheric Reentry, Alexandre Martin, Iain D. Boyd
Alexandre Martin
Recent and future re-entry vehicle designs use ablative material as the main component of the heat shield of their thermal protection system. In order to properly predict the behavior of the vehicle, it is imperative to take into account the gases produced by the ablation process when modeling the reacting flow environment. In the case of charring ablators, where an inner resin is pyrolyzed at a relatively low temperature, the composition of the gas expelled in the boundary layer is complex and might lead to thermal chemical reactions that cannot be captured with simple flow chemistry models. In order to …
Solution Of Multi-Species Real Gas Flows With Electric Arc And Wall Ablation, Alexandre Martin, Marcelo Reggio, Jean-Yves Trépanier
Solution Of Multi-Species Real Gas Flows With Electric Arc And Wall Ablation, Alexandre Martin, Marcelo Reggio, Jean-Yves Trépanier
Alexandre Martin
Nozzle ablation caused by high temperature electric arc is a physical phenomenon commonly found in high voltage electrical devices. In circuit breakers, for example, the strong ablation of the PTFE nozzle wall results in the creation of new species, which implies various chemical reactions. For the simulation of these phenomena, a bi-dimensional axisymmetric Euler equations model for multi-species flow has been developed. To solve the governing equations, a finite volume method based on Roe’s flux splitting scheme [11] has been established. The proposed scheme approaches the mean-values used in Roe’s matrix in a new way. To take into account the …