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不可压缩粘性流动SUPG稳定格式有限元法的时间离散新格式

A new time integration strategy for unsteady incompressible flows based on the SUPG finite element formulation
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摘要 流体域的高效精确计算是大跨空间柔性结构流固耦合问题研究的关键之一.提出对不可压缩粘性流体控制方程具有显式时间离散格式的三步SUPG稳定格式有限元法,以二维拖拽方腔流为对象,运用本方法进行不可压缩粘性流动问题的数值模拟.计算分析显示,三步SUPG稳定格式有限元方法具有较高的精度和稳定性,可应用于非定常不可压缩粘性流动和大跨柔性结构风场耦合问题中风场流动的模拟计算. The efficient stable numerical method for resolution of wind/fluid flows is essential in the problem of fluid-structure interaction.This work is concerned with the temporal discretization techniques of the stabilized finite element formulation for unsteady incompressible fluid/wind flows governed by the Navier-Stokes equations.The lid driven cavity problem is chosen for the performance evaluation of these formulations.The numerical results show that the present three step SUPG finite element strategy is com...
作者 包艳 周岱 李磊
机构地区 上海交通大学船舶海洋与建筑工程学院
出处 《空间结构》 CSCD 北大核心 2008年第1期16-20,共5页 Spatial Structures
基金 国家自然科学基金资助项目(50778111,10572091) 上海市基础研究重点项目资助(07JC14023)
关键词 SUPG稳定格式 不可压缩粘性流 拖拽方腔流 风场 SUPG stabilized formulation unsteady incompressible viscous flows lid driven cavity wind field
分类号 TB126 [理学—工程力学]
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参考文献13

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