Correction: Numerical study of shock interference patterns for gas flows with thermal nonequilibrium and finite-rate chemistry

Catarina Garbacz, Marco Fossati, Walter T. Maier, Juan J. Alonso, James B. Scoggins, Thomas D. Economon, Thierry Magin

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

7 Citations (Scopus)


This work investigates shock interaction mechanisms in inviscid hypervelocity gas flows with thermochemical nonequilibrium over double-wedge geometries using CFD. The SU2 solver has been coupled to the Mutation++ library to simulate these interaction mechanisms for different gas mixtures. A systematic numerical study is performed to evaluate how shock interference patterns differ from Edney’s classification when air and CO2 mixtures are considered. Moreover, the impact of varying the freestream temperature is analysed. Results show that, for a freestream temperature of 57 K, a Type V nine-shock configuration and a Type VI-V transition is identified for air and CO2 flows, respectively. For a freestream temperature of 300 K, the same Type VI-V transition is obtained for the CO2 flow with a slightly different shape, whereas a Type V six-shock configuration is obtained for air. It is concluded that increasing the freestream temperature from 57 K to 300 K has more impact on the extent of thermochemical nonequilibrium of an air flow than of a CO2 flow and, consequently, on the resulting interaction patterns. Moreover, our study shows for the first time that thermal nonequilibrium is overall stronger for air than for CO2 .

Original languageEnglish
Title of host publicationAIAA Scitech 2020 Forum
Place of PublicationReston, VA
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages1
ISBN (Print)9781624105951
Publication statusPublished - 19 Feb 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: 6 Jan 202010 Jan 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF


ConferenceAIAA Scitech Forum, 2020
Country/TerritoryUnited States


  • thermal nonequilibrium
  • freestream conditions
  • nonequilibrium flows
  • computational fluid dynamics


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