分岔动脉血管脉动血流的动力学分析

通过分析血管性肺癌介入治疗的特性,建立了分岔动脉血管二维几何模型和动脉血流平均流速脉动流模型。基于SMPLE算法对分岔动脉血管脉动血流的动力学进行了数值模拟,获得用导管注射药液时血液流场的变化情况。结果表明,建立的典型几何模型和血液平均流速脉动流模型可较好地分析临床上观察到的血流动力学现象,能反映分岔动脉血管脉动流的特点。为实施进一步数值模拟提供了可靠的前提,此项研究的计算结果也为优化血管性介入治疗等提供了血流动力学依据。

Hemodynamic Analysis of Pulsatile Blood Flow in Bifurcate Arteria

A 2D geometry model and an average blood flow velocity profile was established by analyzing the vascular interventional treatment of lung cancer. By virtue of CFD software pact and SIMPLE algorithm, a simulation solution was achieved for hemodynamic analysis of pulsatile blood flow in bifurcate artery. The numerical simulation gave the pressure distribution and the velocity distribution of blood flow in the bifurcate artery. The results of numerical simulation indicate that the geometry model and the pulsatile velocity profile can explain properly the hemodynamic phenomenon in clinic; it also proves the validation of the models. The models and the numerical simulation provide reliable fundamental not only for the further numerical simulation but also for the optimization of vascular intervention treatment.