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Composite mixed finite elements on plane quadrilaterals

✍ Scribed by A. Bendali; N. Lahmar

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 439 KB
Volume: 9
Category: Article
ISSN: 0749-159X
DOI: 10.1002/num.1690090505

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✦ Synopsis

Mixed finite elements over a plane convex quadrilateral are obtained by assembling two Raviart-Thomas mixed finite elements over triangles. The macroelement is given by an eliminating procedure of the degrees of freedom related to the common edge to the two triangles. This procedure results in a finite element with a space of interpolating functions containing the polynomials of degree 5 I , where 1 is the greater integer for which the same property is satisfied by the relevant Raviart-

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