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首页> 外文期刊>Engineering Solid Mechanics >A three-dimensional fluid-structure interaction (FSI) model for estimating the heart energy consumption of blood flow through the aortic valve
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A three-dimensional fluid-structure interaction (FSI) model for estimating the heart energy consumption of blood flow through the aortic valve

机译：一种三维流体结构相互作用（FSI）模型，用于估算通过主动脉瓣血流心脏能量消耗的模型

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The cardiac output and stroke volume of a healthy person was estimated using a 3D fluid-structure interaction (FSI) simulation coupled with an echocardiogram Doppler (echo-Doppler) during exercising and resting. The geometry, dimensions, and blood flow through the aortic valve were measured using the echo-Doppler. A 3D FSI simulation was modeled using an arbitrary Lagrangian-Eulerian mesh. The 3D FSI cardiac output and stroke volume results were 15.4% lower than Doppler results when brachial pressures applied with differences between brachial, central, and left ventricular pressures. While without considering these brachial pressures differences, the discrepancy between the FSI cardiac output and stroke volume results with Doppler increased to 22.3% and 26.2%, respectively. Eventually, the comparisons of the 3D FSI results and clinical measurements demonstrated that numerical methods can be a potential computational tool to estimate cardiac output and stroke volume for different heart rates when they coupled with the clinical measurements.
机译：使用在锻炼和休息期间耦合的3D流体结构相互作用（FSI）模拟，估计健康人的心脏输出和行程体积。在锻炼和休息期间，与超声心动图多普勒（回声多普勒）耦合。使用回声多普勒测量通过主动脉瓣的几何形状，尺寸和血液流动。使用任意拉格朗日 - Eulerian网格建模3D FSI仿真。当臂力，中央和左心室压力之间的差异施加偏差时，3D FSI心脏输出和行程体积结果比多普勒的结果低15.4％。虽然在不考虑这些肱压力差异的情况下，FSI心输出和中风体积与多普勒的差异分别增加到22.3％和26.2％。最终，3D FSI结果和临床测量的比较表明，当它们与临床测量结合时，数值方法可以是估计不同心率的心输出和行程体积。

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