Shock Waves

, Volume 13, Issue 2, pp 139–148 | Cite as

Experimental and numerical studies of underwater shock wave attenuation

  • T. Saito
  • M. Marumoto
  • H. Yamashita
  • S.H.R. Hosseini
  • A. Nakagawa
  • T. Hirano
  • K. Takayama
Original Paper

Abstract.

The attenuation of an underwater shock wave by a thin porous layer is studied both experimentally and numerically. The shock waves are generated by exploding 10 mg silver azide pellets and the pressures at different distances from the explosion center are measured. Measurements are also carried out with a gauze layer placed between the explosion source and the pressure gauge. The results with and without the gauze layer are compared evaluating the shock wave attenuation. Numerical simulations of the phenomenon are also carried out for a simple wave attenuation model. The results are compared with the experimental data. Despite the simple mathematical model of wave attenuation, the agreement between the experimental and numerical results is reasonable.

Keywords:

Underwater shock wave Shock wave attenuation CFD 

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  • T. Saito
    • 1
  • M. Marumoto
    • 1
  • H. Yamashita
    • 1
  • S.H.R. Hosseini
    • 1
  • A. Nakagawa
    • 2
  • T. Hirano
    • 2
  • K. Takayama
    • 1
  1. 1.Shock Wave Research Center, Institute of Fluid ScienceTohoku UniversitySendaiJapan
  2. 2.Department of NeurosurgeryTohoku University Graduate School of MedicineSendaiJapan

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