用湍流有限元法计算颈动脉分叉处的血流

A. Nikolic, M. Topalovic, V. Simić, N. Filipovic
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引用次数: 0

摘要

本文的紊流流动计算采用双方程紊流有限元模型,该模型可以计算粘性亚层内的数值。方程的隐式积分用于确定流体的速度、压力、湍流、动能和湍流动能的耗散。这些值是在增量迭代法每一步的有限元节点中计算出来的。建立了湍流有限元模型,并定制生成有限元网格,用于求解复杂的血流问题。所选匿名患者的动脉几何形状有限元分析结果为我们提供了重要的血流动力学参数,如血流速度场和壁剪切应力的数据。心脏病专家可以使用建议的工具和方法来补充动脉分叉内血流动力学状况的临床研究。
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Calculation of blood flow in carotid artery bifurcation by turbulent finite element method
Calculation of turbulent fluid flow in this paper is performed using two-equation turbulent finite element model that can calculate values in the viscous sublayer. Implicit integration of the equations is used for determining the fluid velocity, pressure, turbulence, kinetic energy, and dissipation of turbulent kinetic energy. These values are calculated in the finite element nodes for each step of incremental-iterative procedure. Developed turbulent finite element model with the customized generation of finite element meshes is used for solving complex blood flow problems. FEM Analysis results for the artery geometry of the selected anonymous patient provides us with data about important hemodynamics parameters such are blood velocity field and wall shear stress. Cardiologists could use proposed tools and methods to supplement clinical investigation of the hemodynamic conditions inside bifurcation of arteries.
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