From: Robert.B<odner@un...>  20100713 10:20:52

Hi to all, I am new to libmesh and quite new to finite elements as well. I have looked through the examples and I would like to try to modify example 9. I want to do some thermal modeling for geological applications. Thus, I would like to solve the diffusion equation, but with different thermal diffusivities for different geological layers. I want to assign different thermal properties to each element. Unfortunately I have not been able to find out how to do so (although I am sure that it is quite easy). My second question is with respect to subdomains. In a first attempt I want to model a granitic intrusion with a temperature of 800°C, whereas the surrounding rocks have 300°C. I have tried to import the mesh from the Matlab PDEtoolbox and it worked fine for 2D. In future (as soon as I am somewhat more familiar with libmesh) I would like to extend the model to 3D. Is there any possibility to import geometries from some program (e.g. Autocad) and to generate the mesh with libmesh? As you see, I am a newbie with libmesh. I am grateful for any hint. Thanks, Robert P.S: If somebody used libmesh for his/her lecture and has some additional tutorials then it would be great if I could have some of them. Thanks 