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改进流体体积法及重建光滑三维液面
Improvement of Volume-of-Fluid Method and Reconstruction of Smooth 3D Surface of Liquid
【摘要】 通过改进流体体积法 (VOF)方程求解部分 ,提高了离散模型中表面单元和液体内部对流的精度 ,从而在整体上减小了对流产生的体积误差 ;为逼真地展现具有复杂表面的运动液体场景 ,提出一种基于几何搜索的表面重建方法———种子-绕空方法 该方法可以将VOF方法生成的带缝隙表面用C0 连接的三角面片集表示 ,以获得光滑连续的液面表示 最后通过实例实现了较低密度网格下光滑地表现复杂液面
【Abstract】 In order to realistically simulate fluid flows, we first improved the solution procedure of the volume of fluid (VOF) method and more precise advection of fluid cells, including the surface and inner cells, was obtained Volume errors are reduced largely on the whole A novel surface reconstruction approach, called the ’seed round empty’ scheme, regarding the strategy of geometrical search was set forth The fluid surface generally containing gaps in VOF method is now represented as a set of triangle pieces connected with C 0 continuity Examples illustrate realistic liquid scenes with smooth surface on relatively coarse grids
【Key words】 physically based modeling; Navier Stocks equations; liquid; free surface flow; VOF(Volume of Fluid) method; advection; reconstruction of liquid surface;
- 【文献出处】 计算机辅助设计与图形学学报 ,Journal of Computer Aided Design & Computer Graphics , 编辑部邮箱 ,2003年11期
- 【分类号】TP391.41
- 【被引频次】2
- 【下载频次】137