It looks like I might have left a loose end here. JP indeed answered my question :) Thanks for all of the help.
On Friday, April 7, 2017 at 9:52:21 PM UTC+2, Timo Heister wrote: > > > Just post a question/request and hope for the best ;-) I'm pretty sure > that > > Timo will read this at some point (won't you Timo?). > > Wait, what? :-) I am skimming most threads of course. Sorry I didn't > reply yet. Are any questions left after JP's reply? > > > Yes, I agree that the fact that there's no explicit expression of the > weak form makes it a little difficult to see the direct link between the > strong form and the assembly procedure. From what I can discern, these two > terms result from the linearisation of the convective term > > Precisely. Take a look at the strong form after "Therefore, we arrive > at the linearized system:" and multiply with a test function v and > integrate by parts where needed. "Present_*" is the u^k and p^k (our > current best guess or the linearization point, or whatever you want to > call it), delta u^k is the unknown, and v is the test function. We > basically linearize > (u. \nabla)u, v > as > (b.\nabla) u, v + (u.\nabla) b, v > > > I don't know whether the compiler would preferentially choose this order > of operations > > It is left to right by definition (left-to-right associativity), but I > agree that we could be clearer. > > -- > Timo Heister > http://www.math.clemson.edu/~heister/ > -- 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.
