Thiriet M, Pares C, Saltel E, Hecht F
LBHP, URA CNRS 343, Université Paris, France.
J Biomech Eng. 1992 Feb;114(1):40-9. doi: 10.1115/1.2895448.
The governing equations of steady flow of an incompressible viscous fluid through a 3-D model of the aortic bifurcation are solved with the finite element method. The effect of Reynolds number on the flow was studied for a range including the physiological values (200 < or = Re < or = 1600). The symmetrical bifurcation, with a branch angle of 70 degrees and an area ratio of 0.8, includes a tapered transition zone. Secondary flows induced by the tube curvature are observed in the daughter tubes. Transverse currents in the transition zone are generated by the combined effect of diverging and converging walls. Flow separation depends on both the Reynolds number and the inlet wall shear.
采用有限元法求解了不可压缩粘性流体通过主动脉分叉三维模型的定常流动控制方程。研究了雷诺数在包括生理值范围（200≤Re≤1600）内对流动的影响。对称分叉，分支角度为70度，面积比为0.8，包括一个渐变过渡区。在子管中观察到由管曲率引起的二次流。过渡区的横向流是由发散壁和汇聚壁的共同作用产生的。流动分离取决于雷诺数和入口壁面切应力。
