维医沙疗下股动脉双向流固耦合血流动力学数值模拟

发布时间：2018-03-20 02:05

本文选题：维医沙疗　切入点：股动脉　出处：《中国生物医学工程学报》2017年04期 　论文类型：期刊论文

【摘要】：研究室内维医沙疗对人体供血量和动脉粥样硬化的影响。应用基于CT图像的三维模型重构技术,构建股动脉流固耦合模型;使用双向流固耦合(FSI)方法,分别对维医沙疗前后的血液流动情况进行血流动力学模拟。通过比较两者的速度矢量、壁面压强及von-Mises等效应力,讨论维医沙疗对动脉粥样硬化、人体供血量以及缺血性脑卒中发生的影响。结果表明:维医沙疗后流场特征时刻的最大血流速度分别增大16.78%、24.14%、29.03%,von-Mises等效应力分别增大64.4%、69.76%、74.14%。维医沙疗可以增加血流量,改善人体供血能力,对预防动脉内血小板的沉积以及缺血性脑卒中发生起积极作用;维医沙疗后von-Mises等效应力明显增加,会加大股动脉粥样硬化斑块破裂的可能性,患者进行维医沙疗时需要慎重。
[Abstract]:The effects of medical sand therapy on blood supply and atherosclerosis were studied. A three-dimensional model reconstruction technique based on CT image was used to construct a fluid-solid coupling model of femoral artery. The hemodynamic simulation of blood flow before and after treatment was carried out respectively. By comparing the velocity vector, wall pressure and von-Mises equivalent stress, the effects of Uygur medical sand therapy on atherosclerosis were discussed. The results showed that the maximum blood flow velocity at the characteristic moment of the flow field after the treatment was increased by 16.78 and 24.14, respectively. The equivalent stress of Von-Mises was increased by 64.4% and 69.76% 74.14, respectively. The treatment of the medicine sand can increase the blood flow and improve the blood supply ability of the human body. It plays an active role in preventing platelet deposition and ischemic stroke, and the equivalent stress of von-Mises increases obviously after treatment, which will increase the possibility of rupture of atherosclerotic plaques in femoral artery, so the patients should be careful in the treatment of atherosclerotic plaques.
【作者单位】：新疆大学机械工程学院;
【基金】：国家自然科学基金(31460245,81160458) 新疆维吾尔自治区自然科学基金(2014211A005)
【分类号】：O353.4;R29

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