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THREE-DIMENSIONAL FLUID-STRUCTURE-INTERACTION SIMULATION OF TILTING DISK MECHANICAL HEART VALVE

机译:摆盘式机械心脏瓣膜的三​​维流固耦合模拟

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The current computational effort will focus on the numerical analysis of current tiling disk MHVs. In this work an implicit fluid-structure-interaction (FSI) simulation of the Bjork-Shiley design was carried out using in-house codes implemented in the commercial code software FLUENT™. In-house codes in the form of journal files, schemes, and user-defined functions (UDFs) were integrated to automate the inner iterations and enable communication between the fluid and the moving disk at the interfaces. Based on the investigations of the current simulations, a new design aiming at improving the hemodynamic performance is suggested. Hemodynamics of the flow in current tilting-disk valves is compared with the suggested design and it is concluded that the suggested design has a better hemodynamic performance in terms of shear stress values and residence times.
机译:目前的计算工作将重点关注当前平铺盘MHV的数值分析。在这项工作中,使用商业代码软件FLUENT™中实现的内部代码进行了Bjork-Shiley设计的隐式流体结构相互作用(FSI)模拟。内部代码以日记文件,方案和用户定义的函数(UDFS)集成为自动化内部迭代,并在接口处能够在流体和移动磁盘之间进行通信。基于目前仿真的调查,提出了一种旨在提高血流动力学性能的新设计。将电流倾斜盘阀流的血流动力学与建议的设计进行比较,并且得出结论,建议的设计在剪切应力值和停留时间方面具有更好的血液动力学性能。

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