تقرير
On the accuracy of least squares methods in the presence of corner singularities
| العنوان: | On the accuracy of least squares methods in the presence of corner singularities |
|---|---|
| المؤلفون: | Cox, C. L, Fix, G. J |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 1985. |
| سنة النشر: | 1985 |
| مصطلحات موضوعية: | Numerical Analysis |
| الوصف: | Elliptic problems with corner singularities are discussed. Finite element approximations based on variational principles of the least squares type tend to display poor convergence properties in such contexts. Moreover, mesh refinement or the use of special singular elements do not appreciably improve matters. It is shown that if the least squares formulation is done in appropriately weighted space, then optimal convergence results in unweighted spaces like L(2). |
| نوع الوثيقة: | Report |
| اللغة: | English |
| URL الوصول: | https://ntrs.nasa.gov/citations/19850013740 |
| ملاحظات: | NAS1-17070 RTOP 505-31-83 |
| رقم الأكسشن: | edsnas.19850013740 |
| قاعدة البيانات: | NASA Technical Reports |
| الوصف غير متاح. |