From: David X. <dx...@my...> - 2006-03-06 01:23:39
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Roy, > > So, is the number of nodes in an element unrelated to the order of > > Lagrange polynomial in libmesh? > > Not unrelated - if you want quadratic Lagrange elements, then you need > second order geometric elements like QUAD9. However, if you want > linear elements, then you can still use second order geometric > elements (to better resolve a curved boundary, for instance). I'm still not clear about how to match the a geometric element type to the polynomial type and order that can be applied to this geometric element. Say, if I want to use EDGE4 for a 1D problem. What are my choices in terms of the order of Lagrange, Hierarchic, Hermite and CLOUGH polynomials? Thanks, David |