A mesh-free particle model for simulation of flow and sediment transport in open channels

用于模拟明渠中水流和泥沙输运的无网格颗粒模型

• 批准号: 109585-2012
• 负责人: Jin, YeeChung
• 金额: $ 3.42万
• 依托单位: University of Regina
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=522084
• 关键词: mesh; free; particle; model; simulation

Solving fluid flow problems numerically may be based on the Eulerian formulation, the Lagrangian method, or a hybrid approach. Due to mesh adaptability and connectivity problems, mesh-based numerical methods such as finite difference, finite element, or finite volume methods have difficulties in the modeling of complicated phenomena with large deformation and fragmentation of geometry and interfaces such as wave breaks and violent river flows. The mesh-free methods use a set of arbitrarily distributed particles instead of mesh to solve governing equations in all kinds of boundaries and interfaces.

数值求解流体流动问题可以基于欧拉公式、拉格朗日方法或混合方法。由于网格的适应性和连通性问题，基于网格的数值方法，如有限差分，有限元，或有限体积法在建模复杂的现象与大变形和破碎的几何形状和界面，如波浪破碎和激烈的河流流动有困难。无网格方法是在各种边界和界面上用一组任意分布的质点代替网格来求解控制方程。