westervelt equation
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2021 ◽  
Vol 150 (4) ◽  
pp. A125-A125
Author(s):  
Lonnie Chien ◽  
John M. Cormack ◽  
E. Carr Everbach ◽  
Mark F. Hamilton


2021 ◽  
Vol 85 (6) ◽  
pp. 632-636
Author(s):  
E. O. Konnova ◽  
P. V. Yuldashev ◽  
V. A. Khokhlova




Author(s):  
Laura R. Gambera ◽  
Carlos Lizama ◽  
Andréa Prokopczyk


2019 ◽  
Vol 24 (sup2) ◽  
pp. 54-61
Author(s):  
Wuxuan Chen ◽  
Peng Wang ◽  
Zhihong Zhang ◽  
Xudong Deng ◽  
Congyao Zhang ◽  
...  






2017 ◽  
Vol 09 (03) ◽  
pp. 1750037 ◽  
Author(s):  
Victoria Suponitsky ◽  
David Plant ◽  
Eldad J. Avital ◽  
Ante Munjiza

Numerical analysis of a pressure wave generated in a liquid [Formula: see text] upon impact of the pneumatic pistons and its interaction with a free surface has been performed for the geometry and parameters of the plasma compression system prototype constructed by General Fusion Inc. Stress wave developing in the hammer–anvil piston assembly is first simulated using high-fidelity structural mechanics research code, then propagated through the liquid [Formula: see text] with several solvers within OpenFOAM[Formula: see text] software and also with nonlinear acoustics in-house code based on the Westervelt equation. In the current system, a pressure wave transmitted into the liquid [Formula: see text] is characterized by a complex temporal double peak structure and strong spatial amplitude variation. An imprint of discrete pulses remains detectable during the entire propagation of the combined wave. An excellent agreement between the results produced with different numerical codes is obtained. Nonlinear effects associated with equation of state are found to be significant at impact velocities of [Formula: see text], while at lower velocities of [Formula: see text] the difference between the results obtained with linear and nonlinear equations of state is negligible. Liquid–gas interface dynamics during the compression process of a spherical gas cavity is captured very well by the compressibleInterFoam within OpenFOAM.



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