Noguchi Hiroshi, Gompper Gerhard
Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich, Germany.
Phys Rev Lett. 2007 Mar 23;98(12):128103. doi: 10.1103/PhysRevLett.98.128103. Epub 2007 Mar 21.
The dynamics of fluid vesicles in simple shear flow is studied using mesoscale simulations of dynamically triangulated surfaces, as well as a theoretical approach based on two variables: a shape parameter and the inclination angle, which has no adjustable parameters. We show that, between the well-known tank-treading and tumbling states, a new "swinging" state can appear. We predict the dynamic phase diagram as a function of the shear rate, the viscosities of the membrane and the internal fluid, and the reduced vesicle volume. Our results agree well with recent experiments.
利用动态三角剖分表面的中尺度模拟以及基于两个变量（一个形状参数和倾斜角，无可调参数）的理论方法，研究了简单剪切流中流体囊泡的动力学。我们表明，在众所周知的平动和翻滚状态之间，可能会出现一种新的“摆动”状态。我们预测了作为剪切速率、膜和内部流体的粘度以及约化囊泡体积函数的动态相图。我们的结果与最近的实验结果非常吻合。
