[CIG-SHORT] defining fault_edge nodes

[Brad Aagaard]

On 6/21/18 12:38 PM, Niloufar Abolfathian wrote:
> Hi,
> 
> I am modeling a 3D vertical fault in an upper crust, lying on a lower 
> crust. It is as your 3d/hex example instead of that the fault is only 
> located in the upper crust.  I set up the nodes related to the fault and 
> fault_edge. From my meshing and node selection the fault should only be 
> located in the upper crust, but after running the model the fault is 
> extended below the upper crust. I guess it may be due to the selection 
> of fault and fault_edge nodes. Hope you can help me with this issue.
> 
> Question: Should the fault_edge nodes be also included in fault nodes? 
> (I suppose the answer is yes, due to the figure 6.4 in the manual.)
> I tried excluding fault_edge nodes from the fault but then the model 
> will not be converged.

Yes. The fault edge nodes are included in the fault nodes.

The edge nodes are any buried edges of the fault. That is, any nodes on 
edges that are not on the external domain boundary should be included in 
the fault edges.

> I have another question. In the example 3d/hex model, if we want to 
> define a boundary condition on y_neg/y_pos , the fault nodes be excluded 
> az z_neg, right?

I don't understand this question.

Regards,
Brad