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粒子方法作为一种直观而常见的模拟方法,已在化工、材料、生物等领域广泛应用。本文针对粒子方法前处理过程的实际需求,利用开源项目BRLCAD的相关功能,设计实现粒子方法的前处理系统。该前处理系统包含几何建模、粒子生成、边界生成等3个模块,提供图形化交互式的几何建模和前处理结果显示功能,以完成复杂边界,多种粒子的复杂算例前处理工作,扩展性良好。最后用实例,说明利用此系统处理工作时,能以简单的步骤,建立较复杂模拟算例的初始数据。
Particle method as an intuitive and common simulation methods, has been widely used in chemical, materials, biology and other fields. In this paper, according to the actual demand of pretreatment of particle method, the pretreatment system of particle method is designed by using the related functions of open source project BRLCAD. The preprocessing system consists of three modules: geometric modeling, particle generation and boundary generation. It provides graphical and interactive geometric modeling and preprocessing results display to complete complex sample preprocessing of complex boundaries and various particles Scalability is good. Finally, an example is given to show that the initial data of a more complicated simulation example can be established with simple steps when processing the work by using the system.