0
research-article

Experimental and numerical investigation of the growth of an air/SF6 turbulent mixing zone in a shock tube

[+] Author and Article Information
Jerome Griffond

CEA, DAM, DIF, F-91297 Arpajon, France
jerome.griffond@cea.fr

Jean-Francois Haas

CEA, DAM, DIF, F-91297 Arpajon, France
jean-francois.haas@cea.fr

Denis Souffland

CEA, DAM, DIF, F-91297 Arpajon, France
denis.souffland@cea.fr

Ghazi Bouzgarrou

Institut Supérieur de l'Aéronautique et de l'Espace (ISAE), Université de Toulouse, 31400 Toulouse, France
bouzgarrou_ghazi@yahoo.fr

Yannick Bury

Institut Supérieur de l'Aéronautique et de l'Espace (ISAE), Université de Toulouse, 31400 Toulouse, France
yannick.bury@isae.fr

Stephane Jamme

Institut Supérieur de l'Aéronautique et de l'Espace (ISAE), Université de Toulouse, 31400 Toulouse, France
stephane.jamme@isae.fr

1Corresponding author.

ASME doi:10.1115/1.4036369 History: Received November 08, 2016; Revised March 21, 2017

Abstract

Shock induced mixing experiments have been conducted in a vertical shock tube of 130 mm square cross-section located at ISAE. A shock wave travelling at Mach 1.2 in air hits a geometrically disturbed interface separating air and SF6, a gas 5 times heavier than air, filling a chamber of length L up to the end of the shock tube. Both gases are initially separated by a 0.5 micron thick nitrocellulose membrane maintained parallel to the shock front by two wire grids: an upper one with mesh spacing equal to either m_s=1.8 mm or 12.1 mm, and a lower one with a mesh spacing equal to m_l=1 mm. Weak dependence of the mixing zone growth after reshock (interaction of the mixing zone with the shock wave reflected from the top end of the test chamber) with respect to L and m_s is observed despite a clear imprint of the mesh spacing m_s in the schlieren images. Numerical simulations representative of these configurations are conducted:the simulations successfully replicate the experimentally observed weak dependence on L, but are unable to show the experimentally observed independence with respect to m_s while matching the morphological features of the schlieren pictures.

Copyright (c) 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In