
Re: Discretization of the transient term for the transport equation [NEWBIE QUESTION]
Posted:
Sep 7, 2008 1:19 PM


On 7 sep, 09:12, Maciej Marek <archet_tou...@poczta.onet.pl> wrote: > boulou...@gmail.com pisze: > > > For the Crank?Nicolson numerical scheme, a low CFL number is not > > required for stability, but I think it is required for numerical > > accuracy, so this method looks less interesting for me. > > It's the same with BDF. > > > Is the 2e > > order BDF a better choice in this case ? I would appreciate advice on > > this issue. > > Why don't you implement both and compare the results? > If that's too much work, take a problem with analytical > solution you know and asses the error for one of the > schemes that you prefer. > > It would be nice if you share with us the results > you obtain. > > Regards, > Maciej Marek
This is probably what I will do, but I would like to know if there is any theorical advantage to use the 2nd order BDF over the Crank? Nicolson scheme or vice versa ?

