Dear all, I am just starting using libmesh and trying to implement the Cahn-Hilliard equation. I already had implemented that by myself and now I am trying to do with libmesh to compare the results and futher use adaptative mesh.
The problem is that when I use an initial condition like a X with 1 on the X and -1 outside the X. The way libmesh project the initial condition when using second order approximation give me values under -1 and above 1, that I don't want it. I am trying to use first order approximation so I can compare with my program and don't have the problem with the initial condition. Even with the initial condition problem, the model work with second order approximation, but every problem that I tried to use didn't work first order approximation. Just a basic question so, in system_of_equation_ex2 if I want to approximate u and v as first order. I just need to put first oder there and take off the mesh.all_second_order()? because when I do this doesn't work. Thank you all Ernesto ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
