On Mon, 4 Aug 2014 16:20:57 +0100 tong giang <[email protected]> wrote:
> Hi Jan and Anders, > > many thanks for the correction. > > Here is still no change in the nonlinear poisson equation: > > http://fenicsproject.org/documentation/dolfin/dev/python/demo/documented/nonlinear-poisson/python/documentation.html The webserver pulls the code from the repo just from time to time. > > I just want to make sure: the derivative of nonlinear poisson > equation muss look like the formula in the attachment :), right? Yes, it is correct, compared to the fix suggested by me! Anders, can add the missing u_h factor in the first term of the derivative? Jan > > Best > To > > > Anders Logg <[email protected]> schrieb am 15:04 Montag, 4.August 2014: > > > > Typos fixed now in master. > > -- > Anders > > > > On Sun, Aug 03, 2014 at 10:43:28PM +0200, Jan Blechta wrote: > > The equation (9) in the tutorial is equivalent to the last two > > equations in the demo. But those have totally 3 typos: > > > > 1. the first term of the > derivative is missing factor 2, > > 2. the second term should have (1+u_h)^2 (missing power), > > 3. the last equations should have minus. > > > > Jan > > > > > > On Sun, 3 Aug 2014 21:14:55 +0100 > > tong giang <[email protected]> wrote: > > > > > Dear all, > > > > > > i'm solving a problem with nonlinear poisson equation. But i have > > > found on the website 2 explanations about that equation, but this > > > both don't match with each other. Here a general nonlinear > > > equation was discussed: > > > http://fenicsproject.org/documentation/tutorial/nonlinear.html > > > > > > Using the equation Nr. 9 of the tutorial for the other specific > > > equation here: > > > http://fenicsproject.org/documentation/dolfin/dev/python/demo/documented/nonlinear-poisson/python/documentation.html > > > > > > cozuld > > > > > > i could not come up to the derivative of F'(uh;δu,v). > > > > > > Could someone explain me, how can i fit the derivative from the > > > tutorial to the derivative from the specific > equation of > > > nonlinear-poisson. I would be really happy with any explanation!! > > > > > > Best > > > To > > > > > > > _______________________________________________ > > fenics mailing list > > [email protected] > > http://fenicsproject.org/mailman/listinfo/fenics _______________________________________________ fenics mailing list [email protected] http://fenicsproject.org/mailman/listinfo/fenics
