Can I ask more about "the limits of our implementation of our quadrature formulas?". I wonder when it usually happens.
Once I calculated drag coefficient, with Q1, my error is 10% compare to exact solution. However, I can 1.7% error when I use Q2 which is significant decrease! At Q3, I get 0.4% and At Q4 it starts to increase again 0.5%. If I go higher, then my error is more than 100%..... I really want to figure out why this happens.... To summarize >From Q1~Q3... it shows significant decrease in error but it is not anymore at Q4 and Q5 2016년 9월 19일 월요일 오전 8시 8분 21초 UTC-5, Guido Kanschat 님의 말: > > You will also encounter the limits of our implementation of our quadrature > formulas and our polynomial evaluation. Both are not stable for high order, > and thus at some point approximation will stall. > > Best, > Guido > > > > -- > Prof. Dr. Guido Kanschat > Interdisziplinäres Zentrum für Wissenschaftliches Rechnen > Universität Heidelberg > Im Neuenheimer Feld 368, 69120 Heidelberg > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
