Reference : A multiscale approach for building a mechanism based catalysis model for high enthalp...
Scientific congresses, symposiums and conference proceedings : Paper published in a book
Engineering, computing & technology : Aerospace & aeronautics engineering
A multiscale approach for building a mechanism based catalysis model for high enthalpy CO2 flow
Thoemel, Jan mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Remote Sensing]
Lukkien, J. J. [> >]
Chazot, O. [> >]
Collection of Technical Papers - 39th AIAA Thermophysics Conference
Miami, Florida
39th AIAA Thermophysics Conference
25 June 2007
[en] The principles of the gas-surface-interaction taking place in the chemically reacting flow around an atmospheric re-entry vehicle are investigated. It turns out that the currently very often used approach employing a recombination coefficient has a limited applicability. Serious concerns arise when the interaction model is extrapolated from ground to flight tests. A mechanism based approach taking into account every interaction step is therefore proposed for the carbon dioxide interaction with platinum. The necessary reaction rates are determined using a microscopic model, which are then used in a continuum viscous flow simulation. The dependence of the catalysis on the outer flow conditions and also on the wall temperature is demonstrated.

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