Hello, I just want to share my success - I successfully incorporated the Taylor DG space into my code - https://github.com/l-korous/mhdeal.
Thank you for your help. On Friday, April 21, 2017 at 9:41:30 PM UTC+2, Lukas Korous wrote: > > Hi, > > yes, that is why I am asking for the easiest way. I will start with the > Taylor DG space as suggested by Praveen, It is at the moment the larger of > my two problems with the MHD code anyway. > > Will be in touch, many thanks for your help. > > Lukáš Korous > > On Fri, Apr 21, 2017 at 5:02 PM, Wolfgang Bangerth <[email protected] > > wrote: > >> On 04/21/2017 08:21 AM, Lukas Korous wrote: >> >>> >>> >>> If you work in real space, then in 2d there are 2x3 basis functions >>> for the linear space (two vector components, each of which has the >>> form a+bx+cy), of which you can eliminate one because of the >>> divergence constraint, if I count correctly. >>> >>> If you map from the reference cell, but require that div u = 0 >>> pointwise in real space, then things may be more complicated. >>> >>> >>> Here I have no preference, whichever is an easier way to satisfy div u = >>> 0 pointwise. >>> >> >> I suspect that that's going to be difficult to do for arbitrary cell >> shapes if you define shape functions on the reference cell and map them. >> >> Best >> W. >> >> >> -- >> ------------------------------------------------------------------------ >> Wolfgang Bangerth email: [email protected] >> www: http://www.math.colostate.edu/~bangerth/ >> >> -- >> 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 a topic in >> the Google Groups "deal.II User Group" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/dealii/NDiUu3qESOM/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
