Shortcomings of discontinuous-pressure finite element methods on a class of transient problems

Jog, CS and Kumar, Rakesh (2010) Shortcomings of discontinuous-pressure finite element methods on a class of transient problems. In: International Journal for Numerical Methods in Fluids, 62 (3). pp. 313-326.

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Abstract

Past studies that have compared LBB stable discontinuous- and continuous-pressure finite element formulations on a variety of problems have concluded that both methods yield Solutions of comparable accuracy, and that the choice of interpolation is dictated by which of the two is more efficient. In this work, we show that using discontinuous-pressure interpolations can yield inaccurate solutions at large times on a class of transient problems, while the continuous-pressure formulation yields solutions that are in good agreement with the analytical Solution.

Item Type:	Journal Article
Publication:	International Journal for Numerical Methods in Fluids
Publisher:	john wiley and sons
Additional Information:	Copyright for this article belongs to john wiley and sons.
Keywords:	finite; element; incompressible flow; viscous flow; laminar flow; Navier Stokes
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	02 Feb 2010 07:16
Last Modified:	19 Sep 2010 05:54
URI:	http://eprints.iisc.ac.in/id/eprint/25487

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