This is a numerical and experimental study on shock attenuation in shock tubes. Tube geometry, boundary layer, and reduction in cross-sectional area induced by burst diaphragms are often considered the main causes of shock speed reduction (or shock attenuation) observed during the experiments. In order to distinguish how each single phenomenon contributes toward shock attenuation, the National Cheng Kung University shock tube is simulated for driver and test (driver–test) gas pairs involving air–air and He–air. For low pressure ratios, the diaphragm effect was found to be negligible. For a pressure ratio of 200 and helium as driver gas, the shock speed was found to decrease linearly with the size of the diaphragm orifice. In general, wall viscous effects caused a 2.5% decrease in shock speed, while an additional 7% reduction was caused by the presence of the diaphragm. The gradual opening of the diaphragm mainly contributed to a decrease in shock oscillations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Diaphragm-Induced Attenuation in Shock Tubes


    Contributors:

    Published in:

    Publication date :

    2024-04-29


    Size :

    14 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Shock-Tube Operation with Laser-Beam-Induced Diaphragm Rupture

    Akihiro Sasoh / Toru Takahashi / Keiko Watanabe et al. | AIAA | 2006


    Diaphragm holder for hydro-pneumatic shock absorber

    LECLERC SCOTT / JOBERT MATTHIAS / LECOURT FREDERIC et al. | European Patent Office | 2022

    Free access


    Diaphragm holder for hydro-pneumatic shock absorber

    LECLERC SCOTT / JOBERT MATTHIAS / LECOURT FREDERIC et al. | European Patent Office | 2022

    Free access

    Study of the attenuation of laser-induced plasma shock wave

    Ni, X. W. / Chen, J. / Shen, Z. et al. | British Library Online Contents | 1998