Abstract
The unsteady and incompressible flow of non-Newtonian fluid through co mposite stenosis is investigated in the present study. The micropolar fluid is treated as a blood flow model. Mild stenosis and slip velocity are also taken into account. The governing equations are given in cylindrical coordinates system. Analytic solutions o f velocity and volumetric flow flux are developed interms of modified Bessel functions. The expressions for the impedance (flow r esistance) λ, the wall shear stress distribution in the stenotic region Tw and the shearing stress at the stenosis throat Ts are also given. Impact of involved pertinent parameters is sketched and examined by the resistance of impedance and shear stress. The stream lines are also made for different sundry parameters.
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