Numerical analysis of shock speed attenuation in expansion tube

Hiroki Sakamoto, Shintaro Sato, Naofumi Ohnishi

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

Abstract

Shock speed attenuation in the expansion tube HEK-X was numerically investigated by solving the axisymmetric compressible Navier-Stokes equation with an adaptive mesh refinement technique. The numerical simulation using a thermochemical nonequilibrium model as a real gas effect and the Baldwin-Lomax model was performed to assume a turbulent boundary layer. Numerical simulation results show good agreement with the analytical solution, and the shock speed of the numerical simulation with the Baldwin-Lomax model agrees with the experimental value at the acceleration tube of the expansion tube. It is found that the boundary layer plays a major role in attenuating the shock wave speed at the acceleration tube of the expansion tube in the same way as the shock tube.

Original languageEnglish
Title of host publicationAIAA Scitech 2021 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages1-8
Number of pages8
ISBN (Print)9781624106095
Publication statusPublished - 2021
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online
Duration: 2021 Jan 112021 Jan 15

Publication series

NameAIAA Scitech 2021 Forum

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
CityVirtual, Online
Period21/1/1121/1/15

ASJC Scopus subject areas

  • Aerospace Engineering

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