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首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >Simulation of coupled microscale multiphysical-fields in particulate-doped dielectrics with staggered adaptive FDTD
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Simulation of coupled microscale multiphysical-fields in particulate-doped dielectrics with staggered adaptive FDTD

机译：交错自适应FDTD模拟颗粒掺杂电介质中的微尺度多物理场耦合

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摘要

This work addresses the modeling and simulation of strongly coupled electromagnetic and thermody-namic fields that arise in particulate-doped dielectrics using an adaptive staggered adaptive FDTD (finite difference time domain) method. Of particular interest is to provide a straightforward modular approach to finding the effective dielectric (electromagnetic) response of a material, incorporating thermal effects, arising from Joule heating, which alter the pointwise dielectric properties such as the electric permittivity, magnetic permeability, and electric conductivity. This is important for "thermal (damage) management" of materials used in electromagnetic applications. Because multiple field coupling is present, a staggered, temporally-adaptive scheme is developed to resolve the internal microstructural electric, magnetic and thermal fields, accounting for the simultaneous pointwise changes in the material properties. Numerical examples are provided to illustrate the approach. Extensions to coupled chemical and mechanical fields are also provided.
机译：这项工作解决了使用自适应交错自适应FDTD（有限差分时域）方法在掺杂颗粒的电介质中出现的强耦合电磁场和热自然场的建模和仿真。特别令人感兴趣的是提供一种直接的模块化方法来查找材料的有效介电（电磁）响应，并结合焦耳热引起的热效应，从而改变点向介电特性，例如介电常数，磁导率和电导率。这对于电磁应用中材料的“热（损伤）管理”非常重要。由于存在多场耦合，因此提出了一种交错的，在时间上自适应的方案，以解决内部微结构电场，磁场和热场，从而解决了材料特性的同时逐点变化。提供了数值示例来说明该方法。还提供了对耦合化学和机械领域的扩展。

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