Numerical Simulation of Fiber Suspension Flow

Part 2 : Branching Flow

Abstract

Flow patterns and fiber orientation in the two-dimensional branching flow of fiber suspensions are calculated using Dinh-Armstrong model. Fiber orientation is obtained by integration of the Jeffery's equation along a streamline.
A vortex which is not observed in the Newtonian flow occurs near the corner at the low Reynolds number. The dependence of the vortex height on Reynolds number and a parameter a is discussed. Some fibers are at almost right angles with a streamline. Furthermore, the application of Stress-relief-mechanism is examined for onset of the vortex.