Nonconforming Mixed Finite Element Method for the Stationary Conduction-Convection Problem

Nonconforming Mixed Finite Element Method for the Stationary Conduction-Convection Problem

Year:    2009

International Journal of Numerical Analysis and Modeling, Vol. 6 (2009), Iss. 2 : pp. 293–310

Abstract

In this paper, a new stable nonconforming mixed finite element scheme is proposed for the stationary conduction-convection problem, in which a new low order Crouzeix-Raviart type nonconforming rectangular element is taken as approximation space for the velocity, the piecewise constant element for the pressure and the bilinear element for the temperature, respectively. The convergence analysis is presented and the optimal error estimates in a broken $H^1$-norm for the velocity, $L^2$-norm for the pressure and $H^1$-seminorm for the temperature are derived.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/2009-IJNAM-769

International Journal of Numerical Analysis and Modeling, Vol. 6 (2009), Iss. 2 : pp. 293–310

Published online:    2009-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    18

Keywords:    Stationary conduction-convection problem nonconforming mixed finite element the optimal error estimates.