Fang Jiannong, Owens Robert G
GEOLEP-ICARE-ENAC, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Biorheology. 2006;43(5):637-60.
In the present paper we use a new constitutive equation for whole human blood [R.G. Owens, A new microstructure-based constitutive model for human blood, J. Non-Newtonian Fluid Mech. (2006), to appear] to investigate the steady, oscillatory and pulsatile flow of blood in a straight, rigid walled tube at modest Womersley numbers. Comparisons are made with the experimental results of Thurston [Elastic effects in pulsatile blood flow, Microvasc. Res. 9 (1975), 145-157] for the pressure drop per unit length against volume flow rate and oscillatory flow rate amplitude. Agreement in all cases is very good. In the presentation of the numerical and experimental results we discuss the microstructural changes in the blood that account for its rheological behaviour in this simple class of flows. In this context, the concept of an apparent complex viscosity proves to be useful.
在本文中，我们使用一种针对全血的新本构方程[R.G. 欧文斯，一种基于微观结构的新型人体血液本构模型，《非牛顿流体力学杂志》（2006年），即将发表]来研究在适度的沃默斯利数下，血液在直的、刚性壁管中的稳定、振荡和脉动流动。将其与瑟斯顿[脉动血流中的弹性效应，《微血管研究》9（1975年），145 - 157]关于单位长度压降与体积流率和振荡流率幅值的实验结果进行了比较。在所有情况下，吻合度都非常好。在展示数值和实验结果时，我们讨论了血液中的微观结构变化，这些变化解释了其在这类简单流动中的流变行为。在这种情况下，表观复粘度的概念被证明是有用的。
