Molecular simulation of oxygen reactions with realistic carbon and silica surfaces at high temperature

Thomas E. Schwartzentruber, Savio Poovathingal, Eric C. Stern

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recent computational results for gas-surface reactions including atomic level simulationsof oxygen-silica recombination and microstructure level simulations of carbon-basedablative surfaces are summarized. Atomic level calculations of oxygen-silica reactions showthe main recombination mechanism to be non-activated (associated with no energy barrier).This is in contradiction to current empirical models fit to limited experimental data. Forablative porous and non-porous TPS, where complex microstructure is important, thecapability to image a real material with micron scale resolution via x-ray micro-tomography, triangulate the surface, and directly simulate the gas-surface interaction with directsimulation Monte Carlo (DSMC) is demonstrated.

Original languageEnglish (US)
Title of host publication20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2015
PublisherAIAA American Institute of Aeronautics and Astronautics
ISBN (Print)9781624103209
DOIs
StatePublished - 2015
Event20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2015 - Glasgow, United Kingdom
Duration: Jul 6 2015Jul 9 2015

Publication series

Name20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2015

Other

Other20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2015
CountryUnited Kingdom
CityGlasgow
Period7/6/157/9/15

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