My code is not stabilized. Does that make a difference? Subramanya G Sadasiva,
Graduate Research Assistant, Hierarchical Design and Characterization Laboratory, School of Mechanical Engineering, Purdue University. "The art of structure is where to put the holes" Robert Le Ricolais, 1894-1977 On Thu, Apr 4, 2013 at 6:08 PM, Roy Stogner <[email protected]>wrote: > > Almost forgot to Cc: libmesh-users: > > On Thu, 4 Apr 2013, Subramanya Gautam Sadasiva wrote: > > > From: "Roy Stogner" <[email protected]> > > > >> Are you using the symmetric or asymmetric constraints option? You > >> might try the alternative. > > > Are these options for the dirichlet boundary condition objects? Or > > are these for when I constrain the matrix at the end of assembly.. > > (constrain_element_matrix etc.) > > When you constrain at the end of assembling each element. > > >> What are your FE variable types? > > > > I am using Q4 for the pressure and Q9 for the velocities. If I solve > > without adaptivity , I have no problems and the thing works as > > promised. > > I was wondering if there was some LBB stability criteria that an > adaptive mesh might be breaking... but I used to use Q2/Q1 Taylor Hood > elements on adapted grids all the time without running into issues > that affected my dumb GMRES+ILU solver options. > --- > Roy > > > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html > _______________________________________________ > Libmesh-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/libmesh-users > ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
