Abstract
We consider a recently introduced triangular nonconforming finite element of third-order accuracy in the energy norm called Pmod3 element. We show that this finite element is appropriate for approximating the velocity in incompressible flow problems since it satisfies an inf-sup condition for discontinuous piecewise quadratic pressures.
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Knobloch, P. On the inf–sup Condition for the Pmod 3 / Pdisc 2 Element. Computing 76, 41–54 (2006). https://doi.org/10.1007/s00607-005-0125-3
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DOI: https://doi.org/10.1007/s00607-005-0125-3