5 votes

How do you handle the singularity in polar or cylindrical coordinates?

Let me show this specifically for the finite element discretization of the Laplace equation: $$ -\frac{1}{r} \frac{\partial}{\partial r} \left(r \frac{\partial}{\partial r} u(r,\theta)\right) - \...
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1 vote

finding discretization error in Burger equation

I believe what they do here is much simpler than what you are thinking. The backward Euler discretization error is not computed from a theoretical consideration but simply by comparing its output ...
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