Lattice Boltzmann Simulation of Electric Field in Co-Linear Pulsed Electric Field (PEF) Treatment Chamber

IF 0.6 4区 物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY
Kum-Hae Ham, Kyong-Nam Pae, Kyong-Chol Jang
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引用次数: 0

Abstract

The treatment efficacy of PEF processing is directly subject to its electric field distribution in the treatment zone. A reliable and efficient model to predict the distribution plays a crucial role for clarifying the treatment mechanism and for improving the treatment effect. A lattice Boltzmann model (LBM) to describe the electric field distribution in a co-linear PEF processing was developed. Based on the assumption that PEF does not cause a time varying magnetic field, the simulation was carried out by using the charge conservation equation. For a two-dimensional LBM, we specified the macroscopic boundary condition for electric potential at high voltage and ground electrodes, and bounce-back boundary condition for electric potential at the insulator. Our model was validated by comparing with previous results based on the finite element method (FEM) for the existing co-linear treatment chambers. We suggested another type of treatment chamber with “holo-elliptical” geometry by which the uniformity of electric field was remarkably improved. Our model encourages further investigation to clear the mechanism of PEF treatment and to design more effective device.

Abstract Image

Abstract Image

共线性脉冲电场 (PEF) 处理室中电场的晶格玻尔兹曼模拟
摘要 PEF 处理的处理效果直接取决于其在处理区的电场分布。一个可靠、高效的电场分布预测模型对于阐明治疗机理和提高治疗效果起着至关重要的作用。我们建立了一个晶格玻尔兹曼模型(LBM)来描述共线性 PEF 处理中的电场分布。在假设 PEF 不会引起时变磁场的基础上,利用电荷守恒方程进行了模拟。对于二维 LBM,我们规定了高压电极和接地电极电势的宏观边界条件,以及绝缘体电势的反弹边界条件。通过与基于有限元法(FEM)的现有共线处理室的结果进行比较,我们的模型得到了验证。我们提出了另一种具有 "全椭圆 "几何形状的处理室,通过这种处理室,电场的均匀性得到了显著改善。我们的模型有助于进一步研究 PEF 的治疗机制,并设计出更有效的装置。
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来源期刊
Bulletin of the Lebedev Physics Institute
Bulletin of the Lebedev Physics Institute PHYSICS, MULTIDISCIPLINARY-
CiteScore
0.70
自引率
25.00%
发文量
41
审稿时长
6-12 weeks
期刊介绍: Bulletin of the Lebedev Physics Institute is an international peer reviewed journal that publishes results of new original experimental and theoretical studies on all topics of physics: theoretical physics; atomic and molecular physics; nuclear physics; optics; lasers; condensed matter; physics of solids; biophysics, and others.
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