This paper investigates the influences of inertia and process parameters on two-layer fiber spinning process for incompressible, isothermal and Newtonian filament jet flow. The present study focuses on the steady flow considering inertia, gravity and non-uniform velocity of each layer across the fiber. The governing equations are solved numerically as nonlinear two-point boundary value problem given the analytical solution is practically impossible. The effects of inertia and initial process conditions (draw ratio, initial velocity ratio and die exit radius ratio) are discussed. The velocity increases monotonically with the axial position in each layer due to inertia effect, at a rate that is relatively slower (faster) near the spinneret (take-up point) as Re increases. In contrast, the radii decrease monotonically with the axial position in each layer.
Comments: 9 Pages.
[v1] 2012-08-19 10:51:44
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