[CIG-SHORT] Fault friction nonlinear model convergence issue

[Birendra jha]

Dear Brad,

I am having trouble using the fault friction model (similar to tutorial step12.cfg). The nonlinear solver does not converge as I increase no. of cells. I have attached both the cases- one that converges and the other one that does not. The only difference between them is in the cell size. nx=ny=7, dx=1000 for the case that converges and nx=ny=14, dx=500 that does not. I am using LaGrit (which is freely available).

Can you help me identify the issue here? 14x14 cannot be too large a grid. I did try reducing dt from 5 yr (that works for case that converges) to 0.2 yr, with no help.

Thanks & regards
Birendra


      
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