胀流型非牛顿幂律流体液滴铺展特性研究

Study on the spreading of dilatant fluid-the non-Newtonian power-law fluid

为了研究胀流型非牛顿幂律流体液滴的铺展特性,我们利用广义Navier边界条件替代无滑移边界条件,对固体表面上薄液膜的一维简化模型采用润滑近似,构造了相似解法,采用数值方法计算了胀流型非牛顿幂律流体液滴的铺展速率、接触角和轮廓高度,得出了铺展半径、接触角和幂律指数的相关关系.

In order to investigate the spreading of dilatant drops of power-law rheology,we compute the spreading rate of non-Newtonian drops using Navier-Stokes boundary condition instead of non-slip boundary condition and we construct a one-dimensional model on the substrate.To compute the spreading rate,apparent angles,height profiles and find the relationships between them,we use the thin film approximation,construct similarity solutions and use numerical methods.