论文标题
在活动极性流体中订购动力学
Ordering kinetics in active polar fluid
论文作者
论文摘要
我们将活性极性流体建模为可定向物体的集合，该物体提供了来自散装流体培养基的粘度的活动应力和动量阻尼。研究了局部定向领域的生长动力学。活性流体的效果取决于活动应力的迹象。我们探索不同活动的增长动力学。我们观察到，与平衡模型相比，对于延伸和收缩的病例，预先因素会改变生长。我们发现，延伸液可以增强域的生长，而收缩液会增强域的增长。对于大量活性大小，渐近生长成为纯代数。我们还发现，由于活性，域的形态保持不变，系统显示了所有活动的良好动态缩放。我们的研究提供了对活性极性凝胶中有序动力学的理解。
We model the active polar fluid as a collection of orientable objects supplied with active stresses and momentum damping coming from the viscosity of bulk fluid medium. The growth kinetics of local orientation field is studied. The effect of active fluid is contractile or extensile depending upon the sign of the active stress. We explore the growth kinetics for different activities. We observe that for both extensile and contractile cases the growth is altered by a prefactor when compared to the equilibrium Model A. We find that the extensile fluid enhances the domain growth whereas the contractile fluid supresses it. The asymptotic growth becomes pure algebraic for large magnitudes of activity. We also find that the domain morphology remains unchanged due to activity and system shows the good dynamic scaling for all activities. Our study provides the understanding of ordering kinetics in active polar gel.
