[1]孙凯顺,张洪明,张桂敏,等.基于ABAQUS的升主动脉置换术术后血流数值模拟[J].中国医学物理学杂志,2021,38(5):650-654.[doi:DOI:10.3969/j.issn.1005-202X.2021.05.024]
　SUN Kaishun,ZHANG Hongming,ZHANG Guimin,et al.ABAQUS-based numerical simulation of blood flow after ascending aorta replacement[J].Chinese Journal of Medical Physics,2021,38(5):650-654.[doi:DOI:10.3969/j.issn.1005-202X.2021.05.024]
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基于ABAQUS的升主动脉置换术术后血流数值模拟()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
38卷
期数:
2021年第5期
页码:
650-654
栏目:
生物材料与力学
出版日期:
2021-05-01

文章信息/Info

Title:
ABAQUS-based numerical simulation of blood flow after ascending aorta replacement
文章编号:
1005-202X（2021）05-0650-05
作者:
孙凯顺1; 张洪明1; 张桂敏2; 夏健明2; 孙毅2
1.昆明理工大学工程力学系，云南 昆明 650500； 2.云南省阜外心血管病医院，云南 昆明 650032
Author(s):
SUN Kaishun1;  ZHANG Hongming1;  ZHANG Guimin2;  XIA Jianming2;  SUN Yi2
1. Department of Engineering Mechanics, Kunming University of Science and Technology, Kunming 650500, China 2.Yunnan Fuwai Cardiovascular Disease Hospital, Kunming 650032, China
关键词:
主动脉; 人工血管; 计算流体力学; 数值模拟; ABAQUS
Keywords:
Keywords: aorta artificial blood vessel computational fluid dynamics numerical simulation ABAQUS
分类号:
R318.01； R543.1
DOI:
DOI:10.3969/j.issn.1005-202X.2021.05.024
文献标志码:
A
摘要:
目的：为研究人工升主动脉置换术治疗Stanford A型主动脉夹层后的血流动力学规律，采集临床CT图像，构建术后个性化主动脉流场几何模型。基于计算流体动力学对其进行数值模拟，得到术后流域壁面压力分布和流速分布两个力学指标，从而分析术后流域规律。方法：采集术后CT图像DICOM文件并应用影像后处理软件MIMICS进行三维重构及优化获得几何模型，再将该流域模型导入网格划分软件进行CFD网格划分，最后将网格文件导入ABAQUS/CFD模块进行多周期瞬态模拟。结果：通过模拟计算，得到术后主动脉在心动周期不同时刻的血流动力学参数。结论：血流动力学参数与边界条件密切相关。主动脉内复杂流场环境与心血管疾病存在一定联系。数值模拟可为人工血管置换术后病情发展提供参考。
Abstract:
Abstract: Objective To construct a personalized aortic flow geometric model according to clinical CT images for studying the hemodynamics after ascending aorta replacement for Stanford A-type aortic dissection, and to analyze hemodynamic laws at postoperative blood drainage area by two mechanical indexes, namely the wall pressure distribution and flow velocity distribution at postoperative blood drainage area, which were obtained by numerical simulation based on computational fluid dynamics. Methods The postoperative CT images in DICOM format were collected, and then image post-processing software MIMICS was used for three-dimensional reconstruction and optimization, thereby obtaining the geometric model. Then the model was imported into meshing software for CFD meshing, and finally the meshed file was imported into the CFD module of ABAQUS (ABAQUS/CFD) for multi-cycle transient simulation. Results The hemodynamic parameters of the aorta at different times of the cardiac cycle were obtained through simulation calculation. Conclusion Hemodynamic parameters are closely related to boundary conditions. The complex flow field environment in the aorta is related to cardiovascular diseases. Numerical simulation can provide some references for the prediction of disease development after ascending aorta replacement.

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备注/Memo

备注/Memo:
【收稿日期】2020-10-14 【基金项目】云南省应用基础研究计划项目（2018FE001）；国家自然科学基金（81960072） 【作者简介】孙凯顺，硕士，研究方向：流体-结构相互作用理论及应用，E-mail: 470197196@qq.com 【通信作者】张洪明，教授，博士，研究方向：计算流体力学，E-mail: hmzhang8888@126.com
更新日期/Last Update: 2021-05-31