Khalighi B, Chandran K B, Chen C J
J Biomech. 1983;16(12):1003-11. doi: 10.1016/0021-9290(83)90101-x.
In this paper, laser-Doppler anemometry measurement of steady flow development in a model human aorta has been reported. Studies were made with uniform entry flow at the root of the aorta and our measurements showed the establishment of a pair of Dean vortices in the mid-arch region. Subsequently, the nature of flow development past centrally occluding caged ball valves in the model aorta was investigated. Our studies showed that in the ascending aorta, an asymmetric velocity profile is obtained with larger velocity gradients towards the inner wall of tertiary curvature (anatomically the left lateral wall) with centrally occluding valves. The peripheral flow past these valves prevented the development of Dean vortices in the mid-arch region. The caged ball valves at the root of the aorta had no discernible effect on the velocity profiles in the brachio-cephalic artery.
本文报道了对模型人体主动脉中稳定血流发展的激光多普勒测速测量。研究针对主动脉根部的均匀入口血流进行，我们的测量显示在主动脉弓中部区域形成了一对迪恩涡。随后，研究了模型主动脉中通过中心阻塞笼球瓣的血流发展特性。我们的研究表明，在升主动脉中，对于中心阻塞瓣膜，会获得不对称的速度分布，在三级曲率（解剖学上为左侧壁）的内壁处速度梯度更大。流经这些瓣膜的周边血流阻止了主动脉弓中部区域迪恩涡的形成。主动脉根部的笼球瓣对头臂动脉中的速度分布没有明显影响。
