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Journal of Applied Mechanics and Technical Physics

2018 year, number 1

Analytic Approximate Solution for a Flow of a Second-Grade Viscoelastic Fluid in a Converging Porous Channel

M. Babaelahi
University of Qom, Qom, Iran
Keywords: метод гомотопических возмущений, жидкость второго порядка, сужающийся канал, уравнение для скорости, homotopy perturbation method (HPM), second-grade fluid, converging channel, velocity equation


The problem of a two-dimensional steady flow of a second-grade fluid in a converging porous channel is considered. It is assumed that the fluid is injected into the channel through one wall and sucked from the channel through the other wall at the same velocity, which is inversely proportional to the distance along the wall from the channel origin. The equations governing the flow are reduced to ordinary differential equations. The boundary-value problem described by the latter equations is solved by the homotopy perturbation method. The effects of the Reynolds and crossflow Reynolds number on the flow characteristics are examined.