Experimental and numerical studies of underwater shock wave attenuation

Saito, Toshimichi; Marumoto, M.; Yamashita, Hiroshi; Hosseini, Seyed Hamid; Nakagawa, Atsuhiro; Hirano, Takayuki; Takayama, K.

doi:10.1007/s00193-003-0201-6

Cited by 33 publications

(12 citation statements)

References 11 publications

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“…In the future, we plan to further extend the algorithm that has the capability of dealing with the effect of the slip condition on the velocity across the in- terface which will be important for applications such as the propagation of pressure wave in bubbly flow (cf. [19,20,41,49]), and also to cavitating flow problems (cf. [4]).…”

Section: Resultsmentioning

confidence: 99%

A fluid-mixture type algorithm for barotropic two-fluid flow problems

Shyue

2004

Journal of Computational Physics

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Section: Resultsmentioning

confidence: 99%

A fluid-mixture type algorithm for barotropic two-fluid flow problems

Shyue

2004

Journal of Computational Physics

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“…In our work we take B = 300MPa and n = 7.15. It has been common practice to use the Tait EOS in shock wave therapy and lithotripsy models [52,46]. This has been justified by noting studies that show that entropy changes across the shock are very small even up to pressure jumps of 200 MPa [46], which is beyond the range used in ESWT.…”

Section: Compressible Fluids In Eulerian Formmentioning

confidence: 99%

Computational models of material interfaces for the study of extracorporeal shock wave therapy

Fagnan

LeVeque

Matula

2013

Commun. Appl. Math. Comput. Sci.

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Extracorporeal Shock Wave Therapy (ESWT) is a noninvasive treatment for a variety of musculoskeletal ailments. A shock wave is generated in water and then focused using an acoustic lens or reflector so the energy of the wave is concentrated in a small treatment region where mechanical stimulation enhances healing. In this work we have computationally investigated shock wave propagation in ESWT by solving a Lagrangian form of the isentropic Euler equations in the fluid and linear elasticity in the bone using high-resolution finite volume methods. We solve a full three-dimensional system of equations and use adaptive mesh refinement to concentrate grid cells near the propagating shock. We can model complex bone geometries, the reflection and mode conversion at interfaces, and the the propagation of the resulting shear stresses generated within the bone. We discuss the validity of our simplified model and present results validating this approach.

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“…The numerical and experimental investigations on the underwater shock wave attenuation with a gauze layer is described in a separate paper. 13 In the present paper, we address the issue of underwater shock (blast) wave attenuation by a Gore-Tex membrane. Gore-Tex sheets are widely used in medicine as dura substitutes.…”

Section: Introductionmentioning

confidence: 99%

On the efficiency of Gore-Tex layer for brain protection from shock wave damage in cranioplasty

Saito

Voinovich

Nakagawa³

et al. 2004

Review of Scientific Instruments

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The effectiveness of a Gore-Tex layer for protecting soft tissue from damage in shock wave therapy is investigated analytically, numerically and experimentally. Analytical considerations based on the fundamentals of wave dynamics and two-dimensional numerical simulations based on the elastodynamic equations are carried out for underwater shock wave propagation and interaction with Gore-Tex membrane models of different complexity. The results clearly demonstrate that considerable attenuation of shock waves with Gore-Tex is due to the air trapped inside the membrane. The experimental results confirm that a Gore-Tex sheet placed in the liquid reduces the transmitted shock wave peak overpressure significantly, by up to two orders of magnitude. Another experimental series reveals what kind of damage in the rat brain tissue can be caused by shock waves of different intensity.

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Experimental and numerical studies of underwater shock wave attenuation

Cited by 33 publications

References 11 publications

A fluid-mixture type algorithm for barotropic two-fluid flow problems

A fluid-mixture type algorithm for barotropic two-fluid flow problems

Computational models of material interfaces for the study of extracorporeal shock wave therapy

On the efficiency of Gore-Tex layer for brain protection from shock wave damage in cranioplasty

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