On Tue, Jun 2, 2009 at 10:39 PM, Mengda Wu <[email protected]> wrote: > Thanks for your reply! > > What if I have a smoothly varying properties, i.e. The properties are > generally differently between neighboring elements. > Can I use subdomain_ids to do that?
It depends on how they smoothly vary. Do you have a function that describes the value of your material coefficients at each x,y,z coordinate or a function that calculates them using the current values of your solution variables? If so... then you can use subdomain ids. If you are reading the values throughout your domain from some other file (maybe from experimental data) then you will want to use an ExplicitSystem as has already been mentioned. The reason I brought up subdomain_ids is that people often overlook the idea that you can just calculate material coefficients on the fly when doing assembly instead of trying to store a "field" of values... but sometimes there is no getting around it. > Could you please list some packages that can generate Exodus meshes? I only > found that CUBIT can do this, but > it is not free to use. Or if there is a documentation about Exodus file > format. That will be even better. Unfortunately... I don't know of any free mesh generators that output Exodus meshes. CUBIT is definitely the best way to generate them. If anyone else knows of one I would be interested as well. Documentation for the format can be found here: http://sourceforge.net/projects/exodusii Besides, how xda supports subdomain? I have not found the information in the > following document: > http://libmesh.sourceforge.net/xda_format/xda_format.pdf Our XDA format does store the subdomain_ids... althought I'm not familiar with the details... maybe Ben could enlighten us. ------------------------------------------------------------------------------ OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
