Nonequilibrium internal energy distributions during dissociation
Abstract
Predicting the extent of air dissociation in thin shock layers created by hypersonic vehicles is challenging due to coupling between gas internal energy and chemical reactions. Thermochemical nonequilibrium flow models, capable of predicting the heat flux and the flux of reactive atomic species to the vehicle surface, are critical for heat shield design. Whereas existing continuum models do not account for non-Boltzmann rotational and vibrational energy distributions and coupling to dissociation, we develop a model based on recent ab initio calculations that does.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 18, 2017
- Source ID
- 10.1073/pnas.1713840115
Entities
People
- Narendra Singh
- Thomas Schwartzentruber
Organizations
- Air Force Office of Scientific Research
- Air Force Research Laboratory Information Directorate
- University of Minnesota