用晶格玻尔兹曼方法模拟弹道冲击治疗装置的声场

IF 1.1 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
K.-N. Pae, Y.-J. Kim, W.-J. Kim, S.-J. Kim
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引用次数: 1

摘要

弹道冲击波治疗装置的压力场分布是阐明其治疗机制的关键因素。我们建立了一个晶格玻尔兹曼模型(LBM)来描述BSW的传播。基于BSW传播引起弱可压缩流动的假设,采用耦合Tait状态方程进行了数值模拟。对于二维LBM,我们使用密度初始条件来表示施加器附近的初始湍流区域。我们首先将模拟结果与之前的实验测量结果进行了比较。然后对压力场的时空分布进行了预测。弹道冲击波的压力场有一个主要的压缩区,然后是一个主要的膨胀区,并伴有其他干扰。二次压力脉冲由一个正相和一个负相组成。本文的研究结果与以往的实验数据吻合较好,为BSW的压力场提供了新的数据。我们的模型有助于进一步研究BSW治疗的生物学机制,并设计更有效的装置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Simulation of Acoustical Field of Ballistic Shock Therapy Device by the Lattice Boltzmann Method

Simulation of Acoustical Field of Ballistic Shock Therapy Device by the Lattice Boltzmann Method

The pressure field distribution of a ballistic shock wave (BSW) therapy device is a crucial factor for clarifying its treatment mechanism. We developed a lattice Boltzmann model (LBM) to describe the propagation of BSW. Based on the assumption that the propagation of BSW causes weak compressible flow, our simulaton was performed by coupling Tait equation of state. For a two-dimensional LBM, we used the density initial condition for initial turbulent region near the applicator. We first compared our simulation results with previous experimental measurements. Then we predicted the temporal and spatial distribution of pressure field. The pressure field of ballistic shock wave has a primary compressive region followed by a primary expansive region with the other disturbances. A secondary pressure pulse consists of a positive phase followed by a negative phase. Our results agree well with previous experimental data and provide additional data on the pressure field of BSW. Our model encourages further investigation to clear the biological mechanism of BSW therapy and to design more effective device.

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来源期刊
Physics of Wave Phenomena
Physics of Wave Phenomena PHYSICS, MULTIDISCIPLINARY-
CiteScore
2.50
自引率
21.40%
发文量
43
审稿时长
>12 weeks
期刊介绍: Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.
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