## Convergence analysis of the rotated Q1 element on anisotropic rectangular meshes

Shipeng Mao and Shaochun Chen

### Abstract

The main aim of this paper is to study the convergence of the well-known nonconforming rotated $\mathcal{Q}_1$ element for the second order elliptic problems on anisotropic rectangular meshes, i.e., the meshes considered in our work do not satisfy the regular assumption. Lastly, a numerical test is carried out, which coincides with our theoretical analysis.

Full Text (PDF) [208 KB]

### Key words

anisotropic, interpolation error, nonconforming, the rotated $\mathcal{Q}_1$ element

65N30, 65N15

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