Abstract
This work is aimed at the development of surface chemistry models for the Direct Simulation Monte Carlo (DSMC) method applicable to non-equilibrium high-temperature flows about reentry vehicles. Probabilities of adsorption and Eley-Rideal recombination dependent on individual properties of each particular molecule and frequencies of desorption and Langmuir-Hinshelwood recombination are determined from macroscopic reaction rate data. Various macroscopic finite-rate surface reaction sets are used for the construction of the DSMC surface recombination models for the reaction cured glass and α-alumina surfaces. The models are implemented in the SMILE++ software system for DSMC computations, and detailed verification of the code is performed. The proposed approach is used to study the effects of surface recombination on the aerothermodynamics of a blunt body at high-altitude reentry conditions.
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