【摘要】 仿真技术在混合物料的介电性能研究中具有重要价值。针对当前研究中面临的仿真模型理想化、多组分物料模拟分析不足和物料加工过程中的动态模拟分析缺失等问题,采用COMSOL App开发器编制基于蒙托卡罗法的颗粒随机生成、投放程序,构建了基质颗粒的空间位置、体积在基体中随机分布的立方体多胞有限元模型,利用能量法和有限元法,分析了颗粒填充混合物的等效介电特性。通过对比研究验证模型的有效性,与传统模型相比,上述模型更符合颗粒在混合物中的真实状态,能获得与实测值更加接近的数值结果。研究可为三维情形下多组分混合物的介电性能模拟分析提供一个参考方法,为变温变频条件下混合物的传热传质过程模拟分析提供借鉴。更多还原

【Abstract】 Simulation technology has important value in the study on dielectric properties of mixed materials. In the related research, there are still some practical problems, such as idealization of simulation model, insufficient simulation analysis of multi-component material performance and insufficient dynamic simulation of material processing process. A random sample generation and delivery procedure based on the Monte Carlo method was developed by using the COMSOL App developer, and a cube multi-cell finite element model with space position and volume of the matrix particles randomly distributed in the matrix was constructed. The effective dielectric properties of the particle-filled mixtures were analyzed with the energy method and the finite element method. The validity of the model was verified through the comparative study. Compared with the traditional simulation model, the model is more consistent with the real state of the particles in the mixtures, and the numerical result is closer to the measured value. The new model can provide a reference for the performance analysis of multi-component mixtures and the simulation analysis of heat and mass transfer under the condition of variable temperature and frequency conversion.更多还原