State-to-state modeling of CO for mars entry applications

Robyn Macdonald, Alessandro Munafò, Christopher O. Johnston, Marco Panesi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This work addresses the study of the dynamics of the excited states of CO in shock heated Mars’s atmosphere. The model accounts for thermal non-equilibrium between the translational energy mode of the gas and the vibrational energy mode of individual molecules. Furthermore, electronic states of molecules are treated as separate species, allowing for non-Boltzmann distributions of their populations. Two approaches have been considered and compared: i) state-to-state and ii) quasi-steady state. Both strategies are applied to the modeling of the flow behind a normal shock wave, for Mars entry conditions. The results indicate that the use of a quasi-steady state approach can lead to a substantial dissociation of the excited CO molecules, thus leading to a drastic underestimation of the radiation heat flux.

Original languageEnglish (US)
Title of host publication53rd AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103438
StatePublished - 2015
Event53rd AIAA Aerospace Sciences Meeting, 2015 - Kissimmee, United States
Duration: Jan 5 2015Jan 9 2015

Publication series

Name53rd AIAA Aerospace Sciences Meeting


Other53rd AIAA Aerospace Sciences Meeting, 2015
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


Dive into the research topics of 'State-to-state modeling of CO for mars entry applications'. Together they form a unique fingerprint.

Cite this