基于无网格法的高精度几何模型粒子离散方法、装置及系统

• Format: Patent
• Language: Chinese
• Published: 09.12.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

本发明公开了一种基于无网格法的高精度几何模型粒子离散方法、装置及系统，将三维几何模型通过多组面网格进行离散，提取网格节点并生成多个单层壁面粒子，定义法向光滑角度为评判标准，构建可视化离散误差分布图，根据误差图应用变尺度粒子局部嵌套加密技术，在较短的周期内得到精度高且计算资源消耗少的壁面粒子模型。本发明可视化离散精度评估方法可具体有效的指导加密位置以及加密程度，结合先粗后细的离散方案，缩短了建立高精度壁面粒子模型的时间周期；局部嵌套加密技术克服了传统加密技术较难实现相邻网格模块之间的网格加密突跃的困难，可将局部结构进行独立加密并与其他结构直接组合，实现薄壁结构的高精度离散与法向量的准确计算。 The invention discloses a meshless method-based high-precision geometric model particle discretization method, device and system. The method comprises the following steps: discretizing a three-dimensional geometric model through a plurality of groups of surface grids, extracting grid nodes and generating a plurality of single-layer wall surface particles; defining a normal smooth angle as a judgment criterion, and constructing a visual discrete error distribution diagram; and according to the error graph, applying a variable-scale particle local nesting encryption technology to obtain a wall surface particle model with high precision and low computing resource consumption in a short period. According to the visual d