Wire coating analysis with Oldroyd 8-constant fluid by Optimal Homotopy Asymptotic Method
In this study the wire coating in a pressure type die with the bath of Oldroyd 8-constant fluid with pressure gradient is investigated. The non-linear ordinary differential equation in dimensionless form is obtained, which is solved for the velocity profile using the Optimal Homotopy Asymptotic Method (OHAM). The effect of Dilatant constant ? ? , the Psendoplastic constant ? ? , and the pressure gradient on velocity distribution and shear stress is studied. Shear stress is examined under the effect of the viscosity parameter ?0 ? 0 . Moreover, the volume flow rate and average velocity is carefully studied with changing the domain (thickness) of the polymer and varying the parameter ?,? ? , ? and the pressure gradient.
wire coating oldroyd 8-constant fluid optimal homotopy asymptotic method pressure type die