Effect of Stairs Fixed in the Rectangular Channel on the Non–Newtonian Fluid Flow; Computational Analysis

Abstract

The steps hindrance flow is widely utilized in the enormous different areas of biosciences and hydraulic engineering the hindrances came along with the advent the various diseases in the blood flows of the human organs in the body due to the stenosis, heavy stresses and increased the fat and many more. And likewise, the obstruction of the deep leap which it takes in the water canals and most river actions. As such, selected a double step flows fixed in the rectangular channel with the analysis of the various type of behave of fluids particularly the change in the rate of viscosity of the fluids. To analyze the fluids, the mathematical equations of fluid motion were chosen as momentum equation where both fluid parameters were that of pressure and velocity and combined with the continuity equation to demonstrate the continuity transported the fluid flow characteristics of the two step flows fixed to the lower wall of the channel. Owing to highly complicated flow issues, utilized the utilization of the numerical computations through the assistance of the finite element process borrowed on the computational platform COMSOL Multiphysics. The problem is first resolved in this platform with the necessary length of the body including the addition of the vertices, edges and faces. Following that to do the numerical calculations, generated the corresponding mesh of the geometry. The fluid components will be viewable through the streamline laminar flow patterns with the various investigations of the Reynolds numbers and will alter the power law indices rate due to the various fluid behave. As the phenomena of the advent different eddies were seen in the channel steps, and the index rate was increased and decreased, eddies slowly grew and moved and suddenly increased eddies, and moved towards the outlet of the channel.

Keywords: Non-Newtonian Fluid, Rectangular Channel, Double Step Geometry, CFD, Finite Element Method, Reynolds Number, Power Law Model, Flow Recirculation