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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Numerical Analysis Seminars: A posteriori error estimation for high aspect ratio finite elements

Presented by "Hallgeir Melbø (Trondheim, visiting Strathclyde)",

2 March 2001 14:00 in CM105

"In many applications it is desirable with high aspect ratio elements because of anisotropic behaviour of the solution. This is typically the case in problems involving for instance boundary layers. However, standard a posteriori error estimators for finite element methods do not work well for such elements. They typically over estimate the error. This means that they may lead to refinements in ""wrong"" areas if they are used for adapting the grid, and they may suggest an over refined grid to get the error down to the desired level.

Different error estimators and possible remedies for the problems stated above will be discussed."

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