农业机械学报2012，Vol.43Issue(7)：79-84,6.DOI:10.6041/j.issn.1000-1298.2012.07.014
控制体有限元中插值函数特性比较与算例分析
Comparison of Interpolation Functions in Control Volume Finite Element Method and Numerical Analysis
摘要
Abstract
Control volume finite element method to solve incompressible flow problems was investigated. The streamline FCBI method was built and compared with the original FCBI and general FCBI method. Lid-driven cavity flow and S-channel flow were chosen as the test cases. The similarities and differences among the three interpolation functions were discussed according to the analysis. The results showed that for convection-dominated flow, especially with complex performances, the Streamline FCBI method could better describe the velocity distributions in the element and achieve more stable converged results. For convection-diffusion problems, the precision of all the methods were low when element Re was high. From the analysis that for convection-diffusion problems, it is concluded that good results can be achieved by using FCBI methods when element Re is less than 5.关键词
不可压流动/控制体/有限元方法/插值函数/管道流Key words
Incompressible flow/ Control volume/ Finite element method/ Interpolation function/ Channel flow分类
数理科学引用本文复制引用
宋宇,曹树良..控制体有限元中插值函数特性比较与算例分析[J].农业机械学报,2012,43(7):79-84,6.基金项目
国家自然科学基金资助项目(51176088) （51176088）
