A. Daiss et al., MODELING OF CATALYTIC REACTIONS ON SILICA SURFACES WITH CONSIDERATIONOF SLIP EFFECTS, Journal of thermophysics and heat transfer, 11(3), 1997, pp. 346-352
A detailed surface chemistry model is presented for the reactions of N
-2, O-2, NO, N, and O on a silica surface, The model distinguishes ads
orption, desorption, and recombination reactions according to the Eley
-Rideal and Langmuir-Hinshelwood mechanisms as well as dissociative ad
sorption reactions of the molecular species, The model parameters are
adjusted by comparison of predicted recombination coefficients for N a
nd O with experimentally determined recombination coefficients. For th
e calculation of surface heating rates of re-entry vehicles, the model
is implemented into a multiple-temperature Navier-Stokes code and cou
pled with a slip model to take into account rarefaction effects at hig
h altitudes. Computational results obtained with the surface chemistry
model for Shuttle-equivalent hyperboloids are compared to Shuttle fli
ght data.