حاجتی, زهرا ، صادق مغانلو, فرهاد ، وجدی, محمد ، رضوی, سید اسماعیل ، متین, سمیه (1399) تعامل مایع-ساختار جریان خون در اطراف یک دریچه ورید. BioImpacts ــ 10 (3). ص.ص.169-175. شاپا 2228-5652
متن کامل
|
متنی
- نسخه چاپ شده
2MB |
آدرس اینترنتی رسمی : https://bi.tbzmed.ac.ir/Article/bi-21806
عنوان انگليسی
Fluid-structure interaction of blood flow around a vein valve
خلاصه انگلیسی
Introduction: Venous valves are a type of one-way 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.
نوع سند : | مقاله |
---|---|
زبان سند : | انگلیسی |
نویسنده اول : | زهرا حاجتی |
نویسنده : | فرهاد صادق مغانلو |
نویسنده مسئول : | محمد وجدی |
نویسنده : | سید اسماعیل رضوی |
نویسنده : | سمیه متین |
ضریب تاثیر و نمایه مجلات: | IF: 3.783 Indexed in: ISI, Scopus, PubMed/PMC |
کلیدواژه ها (انگلیسی): | Blood flow; Fluid-structure interaction; Numerical method; Venous valve |
موضوعات : | WH سیستم های خونی و لنغاوی |
بخش های دانشگاهی : | دانشكده پزشكي > گروه داخلی ، قلب ، عفونی |
کد شناسایی : | 16294 |
ارائه شده توسط : | دکتر سمیه متین |
ارائه شده در تاریخ : | 19 آبان 1401 10:43 |
آخرین تغییر : | 19 آبان 1401 10:43 |
فقط پرسنل کتابخانه صفحه کنترل اسناد