Numerical analysis of carbon dioxide flowfield in expansion-tube

Hiroyasu Mizuno, Keisuke Sawada, Akihiro Sasoh

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

3 Citations (Scopus)

Abstract

Numerical simulation is carried out for solving a transient flowfield of a gas mixture consisting mainly of carbon dioxide in an expansion tube. The Navier-Stokes equations in the axi-symmetric form with a thermochemical nonequilibrium gas assumption are integrated numerically to examine flows in the shock tube as well as in the acceleration tube sections. Calculated results show that the basic structure of unsteady flowfield in the carbon dioxide gas is quite similar to that found in our previous study for air. Shock velocities of 4.4 and 7.5 km/s are attained in the shock tube and acceleration tube sections, respectively. It is found that the contact surface ahead of the driver gas is perturbed significantly when it passes through the nozzle at the entrance of the shock tube section. It is further deformed by the interaction with the boundary layer in the acceleration tube. The contact surface behind the transmitted shock wave in the acceleration tube is also perturbed considerably due to the interaction with the boundary layer. The estimated test time becomes about 10 μs which is about half of that for air.

Original languageEnglish
Title of host publication8th AIAA/ASME Joint Thermophysics and Heat Transfer Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624101182
DOIs
Publication statusPublished - 2002
Event8th AIAA/ASME Joint Thermophysics and Heat Transfer Conference 2002 - St. Louis, MO, United States
Duration: 2002 Jun 242002 Jun 26

Publication series

Name8th AIAA/ASME Joint Thermophysics and Heat Transfer Conference

Other

Other8th AIAA/ASME Joint Thermophysics and Heat Transfer Conference 2002
CountryUnited States
CitySt. Louis, MO
Period02/6/2402/6/26

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear and High Energy Physics

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