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Experimentally validated multiphysics computational model of focusing and shock wave formation in an electromagnetic lithotripter.

Publication ,  Journal Article
Fovargue, DE; Mitran, S; Smith, NB; Sankin, GN; Simmons, WN; Zhong, P
Published in: The Journal of the Acoustical Society of America
August 2013

A multiphysics computational model of the focusing of an acoustic pulse and subsequent shock wave formation that occurs during extracorporeal shock wave lithotripsy is presented. In the electromagnetic lithotripter modeled in this work the focusing is achieved via a polystyrene acoustic lens. The transition of the acoustic pulse through the solid lens is modeled by the linear elasticity equations and the subsequent shock wave formation in water is modeled by the Euler equations with a Tait equation of state. Both sets of equations are solved simultaneously in subsets of a single computational domain within the BEARCLAW framework which uses a finite-volume Riemann solver approach. This model is first validated against experimental measurements with a standard (or original) lens design. The model is then used to successfully predict the effects of a lens modification in the form of an annular ring cut. A second model which includes a kidney stone simulant in the domain is also presented. Within the stone the linear elasticity equations incorporate a simple damage model.

Duke Scholars

Published In

The Journal of the Acoustical Society of America

DOI

EISSN

1520-8524

ISSN

0001-4966

Publication Date

August 2013

Volume

134

Issue

2

Start / End Page

1598 / 1609

Related Subject Headings

  • Time Factors
  • Sound
  • Reproducibility of Results
  • Pressure
  • Polystyrenes
  • Numerical Analysis, Computer-Assisted
  • Motion
  • Lithotripsy
  • Linear Models
  • Kidney Calculi
 

Citation

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Fovargue, D. E., Mitran, S., Smith, N. B., Sankin, G. N., Simmons, W. N., & Zhong, P. (2013). Experimentally validated multiphysics computational model of focusing and shock wave formation in an electromagnetic lithotripter. The Journal of the Acoustical Society of America, 134(2), 1598–1609. https://doi.org/10.1121/1.4812881
Fovargue, Daniel E., Sorin Mitran, Nathan B. Smith, Georgy N. Sankin, Walter N. Simmons, and Pei Zhong. “Experimentally validated multiphysics computational model of focusing and shock wave formation in an electromagnetic lithotripter.The Journal of the Acoustical Society of America 134, no. 2 (August 2013): 1598–1609. https://doi.org/10.1121/1.4812881.
Fovargue DE, Mitran S, Smith NB, Sankin GN, Simmons WN, Zhong P. Experimentally validated multiphysics computational model of focusing and shock wave formation in an electromagnetic lithotripter. The Journal of the Acoustical Society of America. 2013 Aug;134(2):1598–609.
Fovargue, Daniel E., et al. “Experimentally validated multiphysics computational model of focusing and shock wave formation in an electromagnetic lithotripter.The Journal of the Acoustical Society of America, vol. 134, no. 2, Aug. 2013, pp. 1598–609. Epmc, doi:10.1121/1.4812881.
Fovargue DE, Mitran S, Smith NB, Sankin GN, Simmons WN, Zhong P. Experimentally validated multiphysics computational model of focusing and shock wave formation in an electromagnetic lithotripter. The Journal of the Acoustical Society of America. 2013 Aug;134(2):1598–1609.

Published In

The Journal of the Acoustical Society of America

DOI

EISSN

1520-8524

ISSN

0001-4966

Publication Date

August 2013

Volume

134

Issue

2

Start / End Page

1598 / 1609

Related Subject Headings

  • Time Factors
  • Sound
  • Reproducibility of Results
  • Pressure
  • Polystyrenes
  • Numerical Analysis, Computer-Assisted
  • Motion
  • Lithotripsy
  • Linear Models
  • Kidney Calculi