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Published in Int. Journal for Numerical Methods in Engineering Vol. 36 (8), pp. 1395-1412, 1993
doi: 10.1002/nme.1620360808

Abstract

In this paper we present an iterative penalty finite element method for viscous non‐Newtonian creeping flows. The basic idea is solving the equations for the difference between the exact solution and the solution obtained in the last iteration by the penalty method. For the case of Newtonian flows, one can show that for sufficiently small penalty parameters the iterates converge to the incompressible solution. The objective of the present work is to show that the iterative penalization can be coupled with the iterative scheme used to deal with the non‐linearity arising from the constitutive law of non‐Newtonian fluids. Some numerical experiments are conducted in order to assess the performance of the approach for fluids whose viscosity obeys the power law.


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Published on 01/01/1993

DOI: 10.1002/nme.1620360808
Licence: CC BY-NC-SA license

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