Numerical Simulation and Analysis of Incompressible Newtonian Fluid Flows using FreeFem++
نویسندگان
چکیده
We present the analysis and numerical simulations of incompressible Newtonian fluids for unsteady flows in a straight pipe and in deformed pipe with concave and convex deformation of the upper wall. An approach of modeling of blood flow is considered with an unsteady Navier-Stokes problem with a pulsatile flow for which we can establish analogy with existing cardio vascular systems. We apply the Finite Element Methods to obtain solutions and analyze the evolution of the flow over time. For the numerical simulations of fluid flows in complex geometries, FreeFem++ based on finite element method is used and we analyze the behavior of velocity and pressure qualitatively along time. Copyright © 2016PenerbitAkademiaBaru All rights reserved.
منابع مشابه
Experimental Study and Three-Dimensional Numerical Flow Simulation in a Centrifugal Pump when Handling Viscous Fluids
In this paper the centrifugal pump performances are tested when handling water and viscous oils as Newtonian fluids. Also, this paper shows a numerical simulation of the three-dimensional fluid flow inside a centrifugal pump. For these numerical simulations the SIMPLEC algorithm is used for solving governing equations of incompressible viscous/turbulent flows through the pump. The k-ε turbulenc...
متن کاملOn the Numerical Simulation of Free Surface Flow: Modeling Water and Ice PREPRINT
The modeling of various types of free surface flow is presented, ranging from incompressible Newtonian flows, to non-Newtonian viscous ice flows. A numerical method for the simulation of such flows that relies on an Eulerian approach based on the volume-of-fluid formulation is advocated. A
متن کاملNumerical Simulation of Non-Newtonian Inelastic Flows in Channel based on Artificial Compressibility Method
In this study, inelastic constitutive modelling is considered for the simulation of shear-thinning fluids through a circular channel. Numerical solutions are presented for power-law inelastic model, considering axisymmetric Poiseuille flow through a channel. The numerical simulation of such fluid is performed by using the Galerkin finite element approach based on artificial compression method (...
متن کاملNewtonian and Non-Newtonian Blood Flow Simulation after Arterial Stenosis- Steady State and Pulsatile Approaches
Arterial stenosis, for example Atherosclerosis, is one of the most serious forms of arterial disease in the formation of which hemodynamic factors play a significant role. In the present study, a 3-D rigid carotid artery with axisymmetric stenosis with 75% reduction in cross-sectional area is considered. Laminar blood flow is assumed to have both Newtonian and non-Newtonian behavior (generalize...
متن کاملEvaluating the performance of ANSYS-CFX software in simulation the velocity and pressure distributions over circular crested weirs
ANSYS-CFX is an effective and multipurpose software which can be used for simulation the computational fluid dynamics (CFD) solutions at all levels of complexity. This software can be used for numerical solution of two and three dimensional flows, compressible and incompressible flows, viscous and non-viscous flows, laminar and turbulent flows, Newtonian and non-Newtonian flows, porous media, s...
متن کامل