Numerical Investigation of shock tube flows with tailored driver gases and driver inserts

Deshawn Coombs, Peter Michalowski, Benjamin Akih-Kumgeh

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

Abstract

In shock tube experiments, test times can be extended by tailoring the driver gas and non-ideal effects that lead to pre-ignition pressure rise can be mitigated using profiled driver inserts. The effect of these measures on the post-reflected shock conditions and the test time can only be reasonably quantified through numerical studies. In this study the computational fluid dynamics package, OpenFOAM, is used to investigate these two types of shock tube flows. Because of difficulty in perfectly matching the driver gas composition in tailoring, slight compositional deviations leading to under- and over-tailoring are also investigated. The use of shock tube driver inserts to control non-ideal temporal behavior near the shock tube end wall is also considered. The expansion waves reflected from the driver insert used to control temporal increases in pressure. Investigated is the effect of these weak expansion waves on non-ideal temperature increases in the shock tube end wall, which is typically assumed to be related through isentropic compression. These numerical studies are based on the rhoCentralFoam OpenFoam solver.

Original languageEnglish (US)
Title of host publication2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016
PublisherEastern States Section of the Combustion Institute
StatePublished - 2016
Event2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016 - Princeton, United States
Duration: Mar 13 2016Mar 16 2016

Other

Other2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016
CountryUnited States
CityPrinceton
Period3/13/163/16/16

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ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Chemical Engineering(all)

Cite this

Coombs, D., Michalowski, P., & Akih-Kumgeh, B. (2016). Numerical Investigation of shock tube flows with tailored driver gases and driver inserts. In 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016 Eastern States Section of the Combustion Institute.