摘要
网格插值方法是流固耦合领域的重点和热点。文中针对固液交界面上网格尺寸不一,网格节点不重合的情况,利用PCL和VC开发耦合边界的网格处理程序,通过适当的插值方法将流场计算结果插值到固体节点上,形成相应的边界条件。结合算例对比了流场计算结果与六面体Lagrange插值法、四面体体积插值法的计算结果,分析结果表明通过插值得到的结果云图与原始结果吻合,表明了本插值法的有效性及应用前景。
Grid interpolation method is an important and complex issue in fluid-structure coupling field. Normally, grid sizes are different and the nodes are unmatched each other. In this paper, PCL and VC are used to develop a new grid interpolation program that can interpolate the results of fluid to structure nodes as loads, and complete the boundary conditions of structure model. Comparing fluid cloud diagram, hexahedron Lagrange interpolation cloud diagram and tetrahedron volume interpolation cloud diagram, the analysis shows its good consistency between original cloud diagram and interpolation cloud diagram.That means the method is valid and can be used in fluid-structure coupling analysis.
出处
《船舶力学》
EI
北大核心
2009年第4期571-578,共8页
Journal of Ship Mechanics
基金
"船舶数值化智能设计系统"国家教育部财政部重大项目
"典型流体与结构分析CAE软件统一前处理技术研究"海洋工程国家重点实验室专项
关键词
流固耦合
六面体
拉格朗日插值
四面体
体积插值
fluid-structure coupling
hexahedron
Lagrange interpolation
tetrahedron
volume interpolation
