Advertisement

Shock Waves pp 1247-1252 | Cite as

Attenuation of shock wave by porous materials

  • K. Kitagawa
  • M. Yokoyama
  • M. Yasuhara
Conference paper

Abstract

Attenuations of shocked gas flow propagating through porous materials, are investigated experimentally and numerically. Process of shock attenuation occurs when shocked gas flow travel through porous materials such as polyurethane foam or wire mesh. Foams used have high-porosities ϕg= 0.951 ∼ 0.977 and low densities ϱc=27.6 ∼ 55.8 kg/m3, while the wire mesh has low-porosity ϕg=0.36. Shock tube experiments are conducted by using a shock tube with 50 mm in diameter and 6.4m in length. Pressures behind the fixed foam were decreased from the incident shocked pressure, which implies that the shock wave was well degenerated, and in some cases into compression waves. Pressure attenuation factor Ka caused by the presence of foam was estimated to be about 60 ∼ 75 % of the value in the absence of foam value.

Keywords

Shock Wave Porous Material Shock Tube Polyurethane Foam Wire Mesh 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    L.J. Gibson, M.F. Ashby: Cellular Solids: Structure and Properties, 2nd edn. (Cambridge University Press, Cambridge 1988)zbMATHGoogle Scholar
  2. 2.
    B.W. Skews, M.D. Atkins, M.W. Seitz: J. Fluid. Mech. 253, 245 (1993)ADSCrossRefGoogle Scholar
  3. 3.
    T.S. Hattingh, B.W. Skews: Shock Waves 11, 115 (2001)ADSCrossRefGoogle Scholar
  4. 4.
    M.R. Baer: Shock Waves 2, 121 (1992)ADSCrossRefGoogle Scholar
  5. 5.
    A. Levy, G. Ben-Dor, S. Sorek: Shock Waves 8, 127 (1998)ADSCrossRefGoogle Scholar
  6. 6.
    M. Olim, M.E.H. van Dongen, T. Kitamura, K. Takayama: Int. J. Multiphase Flow 20(3), 557 (1994)CrossRefGoogle Scholar
  7. 7.
    K. Kitagawa, M. Kainuma, M. Yasuhara: In: Proc. 23rd Int. Sympo. on Shock Waves, Fort Worth, USA, 2001, pp. 529–535Google Scholar
  8. 8.
    A. Britan, G. Ben-Dor, O. Igra, H. Shapiro: Int. J. Multiphase Flow 27, 617 (2001)CrossRefGoogle Scholar

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • K. Kitagawa
    • 1
  • M. Yokoyama
    • 2
  • M. Yasuhara
    • 1
  1. 1.Dept. of Mechanical Eng.Aichi Institute of Technology (AIT)Toyota, AichiJapan
  2. 2.Graduate student, Dept. of Mechanical Eng.AITToyota, AichiJapan

Personalised recommendations