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发表于 2011-2-15 04:27:11
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来自 美国
check out some source codes, it will be clear out.
By the way, if using gauss-lobatto quadrature instead of gauss-legendre,
both nodal and integral points are the same percise
caoer 发表于 2011-2-15 03:21
My understanding is this way. For an element with regular shape, the integration point is the superconvergence point.
For gauss-lobatto quadrature, the reason that both nodal and integral points have the same precision is that the integration points include the nodal points. |
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