Rindt C C, van Steenhoven A A, Reneman R S
Department of Mechanical Engineering, Eindhoven University of Technology, The Netherlands.
J Biomech. 1988;21(11):985-91. doi: 10.1016/0021-9290(88)90137-6.
Steady flow measurements were carried out in a rigid three-dimensional model of the human carotid artery bifurcation at a Reynolds number of 640 and a flow division ratio of 50/50. Both axial and secondary velocities were measured with a laser-Doppler anemometer. In the bulb opposite to the flow divider a zone with negative axial velocities was found with a maximal diameter of about 60% of the local diameter of the branch and a cross-sectional extent of about 25% of the local cross-sectional area. In the bulb the maximum axial velocity shifted towards the divider wall and at the end of the bulb an axial velocity plateau arose near the non-divider wall. Halfway through the bulb, secondary flow showed a vortex through which fluid flowed towards the divider wall near the bifurcation plane and back towards the non-divider wall near the upper walls.
在雷诺数为640且分流比为50/50的人体颈动脉分叉刚性三维模型中进行了稳定流测量。轴向速度和二次速度均用激光多普勒风速仪测量。在与分流器相对的球部发现了一个轴向速度为负的区域，其最大直径约为分支局部直径的60%，横截面范围约为局部横截面积的25%。在球部，最大轴向速度向分流器壁移动，在球部末端，非分流器壁附近出现了轴向速度平台。在球部中间位置，二次流呈现出一个漩涡，流体通过该漩涡流向分叉平面附近的分流器壁，并返回至上壁附近的非分流器壁。
