کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4642299 | 1341338 | 2008 | 10 صفحه PDF | دانلود رایگان |
This paper describes a hp -adaptive spectral element formulation which is used to discretize the weak formulation obtained by minimizing the residuals in the L2L2-norm. The least-squares error indicator will be briefly discussed. Refinement of the numerical approximation is based on an estimate of the regularity of the underlying exact solution; if the underlying exact solution is sufficiently smooth polynomial enrichment is employed, in areas with limited regularity hh-refinement is used. For this purpose the Sobolev regularity is estimated. Functionally and geometrically non-conforming neighbouring elements are patched together using so-called mortar elements. Results of this approach are compared to uniform h- and p-refinement for a linear advection equation.
Journal: Journal of Computational and Applied Mathematics - Volume 215, Issue 2, 1 June 2008, Pages 409–418