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Importance of mesh skewness

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Old   December 9, 2016, 08:31
Default Importance of mesh skewness
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Hello everyone

I'm writing my thesis and I'd like to include a small section with a brief explanation on mesh skewness and why it is so essential to solution convergence.

Can anyone please enlighten me on

1. what happens when the mesh contains elements with skewness above 0.98 and why it is that particular value? Especially what happens to the element equations.

and 2. if reducing the maximum and/or overall skewness helps increasing the (negative) order of convergence?

Thanks in advance
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