2011/7/8 Derek Gaston <[email protected]> > This method is highly discouraged! It will only work for Lagrange > shape functions. You should really use the built in projection > methods by attaching an init function (like John mentioned). >
oh, didn't know that...in fact, yes, i use only Lagrange basis in my problems. so far, it wasnt in need to initialize with some value the solution vector of my system, but will defo have in mind this remark of yours (about using that built-in projection function)! thanks for the tips :) > > Whenever possible you should endeavor to write shape function agnostic > code... You never know when it might come in handy! (and libMesh > makes it so dang easy). > > Derek > > Sent from my iPad > > On Jul 7, 2011, at 5:25 PM, Vasilis Vavourakis <[email protected]> wrote: > > > how about the following code, would that do for you? > > > > // access one node of the mesh through this pointer > > Node* node; > > // set the solution vector (ie. displacement) to this node > > Real soln[3] ={ u, v, w }; > > // loop for all system variables : > > for (unsigned int ivar=0; ivar<node->n_vars(system.number()); ivar++) { > > // loop for all components (typically one) : > > for (unsigned int icomp=0; icomp<node->n_comp(system.number(), ivar); > > icomp++) { > > const unsigned int idof =node->dof_number(system.number(), ivar, > > 0); > > > > system.current_solution->set(idof, soln[ivar]); > > } > > } > > > > you can implement it in your "init_function" ...as in example 9 of > libmesh. > > > > cheers, > > Vas > > > > > > > > 2011/7/7 Ataollah Mesgarnejad <[email protected]> > > > >> Dear all, > >> > >> I have a TransientLinearImplicitSystem with 3 variables (u,v,w). I want > to > >> initialize it using attach_init_function. How can distinguish between > >> variables in my init function which I pass to attach_init_function(), so > to > >> set the initial condition for each variable? > >> > >> Best > >> Ata > >> > >> > >> > >> > >> > >> > ------------------------------------------------------------------------------ > >> All of the data generated in your IT infrastructure is seriously > valuable. > >> Why? It contains a definitive record of application performance, > security > >> threats, fraudulent activity, and more. Splunk takes this data and makes > >> sense of it. IT sense. And common sense. > >> http://p.sf.net/sfu/splunk-d2d-c2 > >> _______________________________________________ > >> Libmesh-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/libmesh-users > >> > > > ------------------------------------------------------------------------------ > > All of the data generated in your IT infrastructure is seriously > valuable. > > Why? It contains a definitive record of application performance, security > > threats, fraudulent activity, and more. Splunk takes this data and makes > > sense of it. IT sense. And common sense. > > http://p.sf.net/sfu/splunk-d2d-c2 > > _______________________________________________ > > Libmesh-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/libmesh-users > ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
