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

Abstract:

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.

• Periodical: Journal of Biomimetics, Biomaterials and Biomedical Engineering (Volume 64)
• Pages: 69-84
• DOI: https://doi.org/10.4028/p-yMQ40w
• Online since: April 2024
• Authors: Wen Ting Wang*, Yun Qing Gu, Ling Zhi Yu, Zhuo Fan Yin, Zhou Li, Deng Hao Wu, Jie Gang Mou, Shui Hua Zheng, Hui Jie Zhou
• Keywords: Bionic Grooves, Blood Flow Resistance, Numerical Simulation, Resistance Reduction, V-Shaped Groove

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