A comparative study between partitioned and monolithic methods for the problems with 3D fluid-structure interaction of blood vessels

被引：29
|
作者：
Sang Truong Ha [1 ]
Long Cu Ngo [1 ]
Saeed, Muhammad [1 ,4 ]
Jeon, Byoung Jin [2 ]
Choi, Hyounggwon [3 ]
机构：
[1] Seoul Natl Univ Sci & Technol, Deptartment Mech Engn, Seoul, South Korea
[2] Yonsei Univ, Integrat Cardiovasc Imaging Res Ctr, Seoul 120749, South Korea
[3] Seoul Natl Univ Sci & Technol, Deptartment Mech & Automot Engn, Seoul, South Korea
[4] Kyungpook Natl Univ, Dept Mech Engn, Daegu, South Korea
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2017年 / 31卷 / 01期
关键词：
Blood flows; Finite element method; Fluid-structure interaction; Monolithic; Partitioned; FLOW; MECHANICS; FORMULATION; THROMBUS;
D O I：
10.1007/s12206-016-1230-2
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The problem with Fluid structure interaction (FSI) can be simulated by monolithic (fluid and structured equations are solved in a single monolithic matrix) or partitioned approach (fluid and solid equations are sequentially solved, and coupling is achieved subsequently through iteration). This paper presents a comparative study between monolithic (in-house) and partitioned (ANSYS) methods for 3D FSI problems. Pressure wave propagation in a flexible tube and a pulsatile flow interacting with a mild stenotic vessel are used in this study. The present numerical experiment reveals that the monolithic approach produced better convergence behavior and consumed lower CPU time than the partitioned method for the selected 3D FSI problems. Furthermore, the partitioned method had a severe convergence problem during strong interaction of fluid and structure.
引用
收藏
页码：281 / 287
页数：7
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