[CIG-SHORT] (no subject)

[Brad Aagaard]

Bobby,

Yes, you can apply Dirichlet BC in any of the coordinate directions. 
Simply change the bc_dof array to include the DOF that you want (0=x, 
1=y, 2=z). In your case, you want to apply the BC to the external 
boundaries and should decompose the "right" BC into different BC with 
uniform values or use a single BC with a spatial database to impose a 
spatial variation in the velocities.

Regards,
Brad


On 9/9/12 3:16 PM, BOK10 at pitt.edu wrote:
> Hi,
>
> So I have a 2-d model with 3 material blocks separated by faults (2 of
> them total). I've used step 12 (section 7.8.7.4) as a guideline to setup
> the code for pylith; however, is it possible to apply the velocity
> boundary conditions on nodesets that are perpendicular to the direction of
> motion? What I'd like to do is push (or pull) the blocks. Would this work?
> I've attached a picture of what I'd like to do. Essentially I want to look
> at the stress field that develops as the blocks are pushed past one
> another.
>
> I tried applying velocity boundary conditions in the direction i desire
> for the top/bottom nodesets plus an additional nodeset I created in the
> center of the middle material block, but the output made it obvious that
> it ran the calculations above/below the middle boundary separately.
>
> Thanks,
> Bobby Karimi
>
>
>
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