Abstract
Objectives: In this study, the behavior of laminar, incompressible and Newtonian fluid flow through the two dimensional backward facing step channels with the expansion ratio 1:2 is studied. Methods: The governing system of non-linear partial differential equations is worked out with the Galerkin least square finite element method. For computation purpose, the finite element based package COMSOL Multi-Physics 5.0 is used. Findings: The streamline pattern of the velocity field and pressure isobars is conferred at different Reynolds numbers. The minimum and maximum velocity magnitudes as well as pressure at the inlet and outlet including their differences are measured. Moreover, the reattachment length of the vortex organized at the corner of downstream of observed geometry is calculated and contrasted with experimental investigation of Armalyetal and CFD investigation of. Applications: Such fluid dynamics has frequently been used in industries including polymers, petro refineries, paints, biological systems etcetera. Keywords: Finite Element’s Technique, Newtonian Fluid Flow, Non-Linear Partial Differential Equations
Highlights
A definite quantity of numerical investigations has been made to discourse the recirculation flow rates and growth in length of the vortex formed in the silent corner of the two dimensional backward facing step channels
A velocity profile considering as a parabolic is tricked at the inlet of the channel to keep an eye on the steady state, laminar, and Newtonian fluid flow through the backward facing step channel
A lot of fluid frameworks can be talked about with simulation and modeling obtained through the COMSOL Multi-Physics v 5.0 but in general we concentrate here the reattachment length of the vortex formed at the left silent corner, the velocity magnitude of the fluid particles and the pressure exerted in the channel
Summary
A definite quantity of numerical investigations has been made to discourse the recirculation flow rates and growth in length of the vortex formed in the silent corner of the two dimensional backward facing step channels. In5, achieved the numerical solution of the Navier Stoke equation to testify the simulation of laminar and Newtonian fluid flows through the two-dimensional backward facing step channel with high Reynolds numbers up to 3000 by applying the very efficacious finite difference scheme. He found that the length of vortex found in the corner of the backward facing step channel increases in a linear manner with that of increasing in the Reynolds number
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