[CIG-SHORT] Kinematic fault convergence

[Nick Wogan]

Charles,

solver_fault_fieldsplit.cfg settings worked!

I should have been able to figure this out but thanks so much for saving me
time slowly searching for these settings.

Thanks!
Nick

On Tue, Mar 14, 2017 at 1:45 PM, Charles Williams <willic3 at gmail.com> wrote:

> Hi Nick,
>
> For now, we’ll assume that your geometry is OK.  Questions for you:
>
> 1.  Does your residual continue to get smaller, or does it ‘get stuck’ at
> a particular residual value?
> 2.  Have you tried any of the solver settings in src/share/settings?
> Specifically, I would try solver_fault_fieldsplit.cfg.  Note that this
> setting is only useful if you have faults in your problem.
>
> Try the solver setting above, and save the log file.  If the solution
> still doesn’t converge, please send the log to us.
>
> Cheers,
> Charles
>
>
> On 14/03/2017, at 7:58 AM, Nick Wogan <nicholaswogan at gmail.com> wrote:
>
> Charles,
>
> I see what you are referring to. Importing the .exo file into trelis/cubit
> does show there to be free surfaces in the mesh. This is strange because
> before I export the mesh there are no free surfaces and I have
> imprinted/merged the geometry successfully (before meshing) in trelis.
> After i export the mesh as .exo and then import it back into trelis is says
> there are free surfaces.
>
> Attached are journal file examples.
>
> Nick
>
> On Sun, Mar 12, 2017 at 2:15 PM, Charles Williams <willic3 at gmail.com>
> wrote:
>
>> Dear Nick,
>>
>> After a quick look at your mesh, it appears that there are a number of
>> free surfaces still in your mesh, which indicates to me that you may not
>> have merged things.  I am not certain whether that is responsible for your
>> problems, but I would delete unused free surfaces and make sure everything
>> is merged when you create your mesh.
>>
>> Cheers,
>> Charles
>>
>>
>> On 11/03/2017, at 12:28 PM, Nick Wogan <nicholaswogan at gmail.com> wrote:
>>
>> Hi Charles or Brad,
>>
>> Some simulations I am running with kinematic faults are not converging..
>>
>> Attached is an example. W4_nofault.cfg and W4_withfault.cfg are the same
>> simulation (and mesh) except W4_nofault.cfg has no faults implemented,
>> while W4_withfault.cfg has two kinematic faults with 10 m of reverse slip
>> prescribed on each fault.
>>
>> W4_withfault.cfg doesn't converge, W4_nofault.cfg does converge.
>>
>> What am I doing wrong? What solver settings should I be changing?
>>
>> Thanks,
>> Nick Wogan
>> <fault_example.zip>_______________________________________________
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>>
>>
>> *Charles Williams I Geodynamic ModelerGNS Science **I** Te Pῡ Ao*
>> 1 Fairway Drive, Avalon 5010, PO Box 30368, Lower Hutt 5040, New Zealand
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>>
>>
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>
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>
> *Charles Williams I Geodynamic ModelerGNS Science **I** Te Pῡ Ao*
> 1 Fairway Drive, Avalon 5010, PO Box 30368, Lower Hutt 5040, New Zealand
> *Ph* 0064-4-570-4566 I *Mob* 0064-22-350-7326 I *Fax* 0064-4-570-4600
> *http://www.gns.cri.nz/* <http://www.gns.cri.nz/> *I* *Email: *
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