Bayesian calibration of a finite-rate nitridation model from molecular beam and plasma wind tunnel experiments
Résumé
The accurate modeling of gas-surface interaction phenomena is crucial for predicting the heat flux and the mass loss experienced by atmospheric entry bodies. Gas-surface interactions refer to the phenomena occurring between the reacting gas and the material. An important part of the modeling is the description of the surface chemical reactions. We propose to stochastically calibrate the rates of the elementary reactions between a nitrogen gas and a carbon surface by using molecular beam data. The parameters' joint posterior is then propagated through a CFD model to reproduce plasma wind tunnel experiments. The predictive quantities exhibit good agreement with the experimental counterparts.
Domaines
Sciences de l'ingénieur [physics]
Origine : Fichiers produits par l'(les) auteur(s)
