Uncertainty quantification study of non-equilibrium viscous shock-layer

Takumi Kino, Kosuke Totani, Tomoaki Ishihara, Yousuke Ogino, Naofumi Ohnishi

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

Abstract

Uncertainty quantification and sensitivity analysis for a high enthalpy flow were per- formed using thermochemical nonequilibrium models of the air. Parameters of chemical kinetic rates and relaxation time for two-temperature model were chosen as input uncer- tainties. As a result of the uncertainty analysis, those input uncertainties do not have significant in uences on the convective heat ux for the present conditions. However, stan- dard deviation of temperature distributions has a different tendency between the models. Moreover, global sensitivity analysis using Sobol’ indices was performed, and it is found that sensitivities for temperature are strongly related to the forward reaction rates of O2 dissociation and the relaxation time of N2 molecules near the shock front, while the forward reaction rates of O2 and relaxation time of N2 are responsible for the sensitivity near the wall.

Original languageEnglish
Title of host publication53rd AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103438
Publication statusPublished - 2015 Jan 1
Event53rd AIAA Aerospace Sciences Meeting, 2015 - Kissimmee, United States
Duration: 2015 Jan 52015 Jan 9

Publication series

Name53rd AIAA Aerospace Sciences Meeting

Other

Other53rd AIAA Aerospace Sciences Meeting, 2015
CountryUnited States
CityKissimmee
Period15/1/515/1/9

ASJC Scopus subject areas

  • Aerospace Engineering

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