阻力微结构对血流阻力影响的数值模拟研究

IF 0.5 Q4 ENGINEERING, BIOMEDICAL

Journal of Biomimetics, Biomaterials and Biomedical Engineering Pub Date : 2024-04-10 DOI:10.4028/p-ymq40w

Wen Ting Wang, Yun Qing Gu, Ling Zhi Yu, Zhuofan Yin, Zhou Li, Deng Hao Wu, Jie Gang Mou, Shui Hua Zheng, Hui Jie Zhou

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引用次数: 0

摘要

在人造血管中使用仿生减阻微结构可有效降低其对血液流动的阻力。分析并简化了血管的特性，通过数值模拟对比分析了 V 形、矩形和半圆形三种仿生微结构模型的减阻效果，并验证了三种沟槽结构在管状模型中的减阻效果。结果表明，与相同尺寸的矩形和半圆形结构相比，V 形凹槽结构所占体积更小，减阻效果显著，可实现性和稳定性高，是人工血管减阻微结构的最佳选择。此外，还进一步分析了 V 形槽结构的壁面剪应力，以验证这种微结构在人造血管中的剪切效应，并揭示 V 形槽微结构的剪切机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Numerical Simulation Study on the Effect of Resistance Microstructure on Blood Flow Resistance

The use of bionic drag-reducing microstructures in artificial blood vessels can effectively reduce their resistance to blood flow. The characteristics of the blood vessel are analysed and simplified, and the resistance reduction effects of three bionic microstructure models, namely V-shaped, rectangular and semi-circular, are compared and analysed by numerical simulations, and the resistance reduction effects of the three groove structures in the tubular model are verified. The results show that the V-shaped groove structure occupies a smaller volume compared to the rectangular and semi-circular structures of the same size, has a significant drag reduction effect, is highly achievable and stable, and is the best choice as a drag reduction microstructure for artificial blood vessels. In addition, the wall shear stresses of the V-groove structure were further analysed to verify the shear effect of this microstructure in artificial blood vessels and to reveal the shear mechanism of the V-groove microstructure.

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来源期刊

Journal of Biomimetics, Biomaterials and Biomedical Engineering ENGINEERING, BIOMEDICAL-

CiteScore

1.40

自引率

14.30%

发文量