机械科学与技术2018，Vol.37Issue(1)：19-23,5.DOI:10.13433/j.cnki.1003-8728.2018.0104
生物瓣膜流固耦合分析的PISO算法研究
Analyzing Fluid-solid Coupling of Bioprosthetic Heart Valve with PISO Algorithm
摘要
Abstract
This paper deduced the coupling equations of biological heart valve and blood with the ArbitraryLagrange-Euler(ALE) method,and discretized the momentum equation of blood with the pressure-implicit splitting of operators(PISO) algorithm.The velocity iteration equation of the coupling process is obtained.Then,the PISO was carried out with the Fluent software,and the mathematical model of the valve deformation was obtained.The computer simulation results show that the valve deformation mainly occurs on the free edge of each leaflet and that the abdomen deformation is small and that the free edge curls during the valve opening.The experiments on the pulsatile flow of the valve were also performed,and the experimental results agree with the simulation results.The simulation and experimental results show that this method can be used to analyze the fluid-solid coupling of the bioprosthetic heart valve,providing some reference for its further optimization.关键词
生物瓣膜/流固耦合/压力隐式算子分割算法/脉动流实验Key words
bioprosthetic heart valve/fluid structure interaction/computer simulation/pulsating flow experiment/mathematical model分类
矿业与冶金引用本文复制引用
申炳申,袁泉,王志超,唐丹,朱宏伟..生物瓣膜流固耦合分析的PISO算法研究[J].机械科学与技术,2018,37(1):19-23,5.基金项目
国家自然科学基金项目(31170906)资助 （31170906）
