Gradient discretisation method: Difference between revisions

Revision as of 19:03, 13 November 2016

Revision as of 19:10, 13 November 2016

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=== Mixed Finite Element ===

The Mixed[[mixed Finitefinite Elementelement method]] consists in defining two discrete spaces, one for the approximation of <math>\nabla \overline{u}</math> and another one for <math>\overline{u}</math>.

It suffices to use the discrete relations between these approximations to define a GDM. Using the low degree Raviart-Thomas mixed finite elements allows to get the piecewise constant reconstruction property.