Fluid-structure interaction of blood flow around a vein valve

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Hajati Zahra; Sadegh Moghanlou Farhad; Vajdi Mohammad; RAZAVI SEYED ESMAIL; MATIN Somaieh

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Journal: BioImpacts Year:2020 | Volume:10 | Issue:3 Page(s): 169-175

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Title

Fluid-structure interaction of blood flow around a vein valve

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Keywords

Venous valve

Blood flow

Fluid-structure interaction

Numerical method

Abstract

Introduction: Venous valves are a type of oneway valves which conduct Blood flow toward the heart and prevent its backflow. Any malfunction of these organs may cause serious problems in the circulatory system. Numerical simulation can give us detailed information and point to point data such as velocity, wall shear stress, and von Mises stress from veins with small diameters, as obtaining such data is almost impossible using current medical devices. Having detailed information about fluid flow and valves' function can help the treatment of the related diseases. Methods: In the present work, the Blood flow through a Venous valve considering the flexibility of the vein wall and valve leaflets is investigated numerically. The governing equations of fluid flow and solid domain are discretized and solved by the Galerkin finite element method. Results: The obtained results showed that the blood velocity increases from inlet to the leaflets and then decreases passing behind the valve. A pair of vortices and the trapped region was observed just behind the valves. These regions have low shear stresses and are capable of sediment formation. Conclusion: The von Mises stress which is a criterion for the breakdown of solid materials was obtained. It was also observed that a maximum value occurred at the bottom of the leaflets.

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APA: Copy

Hajati, Zahra, Sadegh Moghanlou, Farhad, Vajdi, Mohammad, RAZAVI, SEYED ESMAIL, & MATIN, Somaieh. (2020). Fluid-structure interaction of blood flow around a vein valve. BIOIMPACTS, 10(3), 169-175. SID. https://sid.ir/paper/753278/en

Vancouver: Copy

Hajati Zahra, Sadegh Moghanlou Farhad, Vajdi Mohammad, RAZAVI SEYED ESMAIL, MATIN Somaieh. Fluid-structure interaction of blood flow around a vein valve. BIOIMPACTS[Internet]. 2020;10(3):169-175. Available from: https://sid.ir/paper/753278/en

IEEE: Copy

Zahra Hajati, Farhad Sadegh Moghanlou, Mohammad Vajdi, SEYED ESMAIL RAZAVI, and Somaieh MATIN, “Fluid-structure interaction of blood flow around a vein valve,” BIOIMPACTS, vol. 10, no. 3, pp. 169–175, 2020, [Online]. Available: https://sid.ir/paper/753278/en

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