Numerical Modeling of Fluid Droplet Spreading and Contact Angle Hysteresis Nikolai V. Priezjev, Mechanical Engineering, Michigan State University, MI 48824 Molecular dynamics simulations of two-phase flow with moving contact line over a smooth surface: High resolution of the velocity fields and shear stresses near the contact line in the steady-state shear flow The MD results show that both dynamic contact angle and slip velocity near the contact line increase with increasing the capillary number (Ca). Also, at high Ca the break up of fluid-fluid interface is observed. The slip boundary conditions near the moving contact line extracted from MD simulations were then used in the continuum solution of the Navier-Stokes equation in the same geometry to reproduce velocity profiles and the shape of the fluid-fluid interface. Reference: A. Niavarani, Ph.D. thesis (2010). us ut Ls Fluid flow Rough surface t n "Modeling the combined effect of surface roughness and shear rate on slip flow of simple fluids" Reference: A. Niavarani and N.V. Priezjev, Phys. Rev. E 81, 011606 (2010).