Model for heterogeneous catalysis on metal surfaces with application to hypersonic flows
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Data
1999
Autori
Barbato, Maurizio
Reggiani, S.
Bruno, Claudio
Muylaert, J.
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Abstract
A model for heterogeneous catalysis for Copper, Nickel, and Platinum has been devised. The model simulates the heterogeneous chemical kinetics of dissociated air flow impinging metal surfaces. Elementary phenomena such as, atomic and molecular adsorption, Eley-Rideal and Langmuir-Hinshelwood recombinations, and thermal desorptions have been accounted for. Comparisons with experimental results for Nitrogen and Oxygen recombination show good agreement. In the second part of this work, the finite rate catalysis model has been used to analyzed numerically the problems of the heterogeneous catalysis similarity between hypersonic ground testing and reentry flight. Therefore the flow around a blunt cone under these conditions has been calculated and results for heat fluxes and for a suggested similarity parameter have been compared and discussed.
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Keywords
heterogeneous catalysis , space vehicle , thermal protection system (TPS) , atom adsorption