Numerical Simulations of the Square Lid Driven Cavity Flow of Bingham Fluids Using Nonconforming Finite Elements Coupled with a Direct Solver

In this paper, numerical simulations are performed in a single and double lid driven square cavity to study the flow of a Bingham viscoplastic fluid. The governing equations are discretized with the help of finite element method in space and the nonconforming Stokes element Q~1/Q0 is utilized which...

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Bibliographic Details
Published in:Advances in mathematical physics 2017-01, Vol.2017 (2017), p.1-10
Main Authors: Jabeen, K., Yaqub, M., Kousar, N., Mahmood, R.
Format: Article
Language:English
Subjects:
Accuracy
Computational fluid dynamics
Computer simulation
Energy
Finite element analysis
Finite element method
Fluid flow
Mathematical analysis
Mathematical models
Methods
Non-Newtonian fluids
Numerical analysis
Reynolds number
Solvers
Viscosity
Yield stress
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Summary:In this paper, numerical simulations are performed in a single and double lid driven square cavity to study the flow of a Bingham viscoplastic fluid. The governing equations are discretized with the help of finite element method in space and the nonconforming Stokes element Q~1/Q0 is utilized which gives 2nd-order accuracy for velocity and 1st-order accuracy for pressure. The discretized systems of nonlinear equations are treated by using the Newton method and the inner linear subproablems are solved by the direct solver UMFPACK. A qualitative comparison is done with the results reported in the literature. In addition to these comparisons, some new reference data for the kinetic energy is generated. All these implementations are done in the open source software package FEATFLOW which is a general purpose finite element based solver package for solving partial differential equations.
ISSN:1687-9120
1687-9139
DOI:10.1155/2017/5210708