[CIG-SHORT] error with mesh dimensions

Matthew Knepley knepley at rice.edu
Tue Sep 27 08:05:55 PDT 2016


On Tue, Sep 27, 2016 at 9:58 AM, Francisco Delgado <fjd49 at cornell.edu>
wrote:

> Ok, the error occurs when I decrease by half the size of the triangles in
> the wall cavities, but why??
>

To PyLith, your cells look very small, because they are being normalized by
a large volume.

This is discussed in Section 4.1.3.1 of the manual

  Thanks,

     Matt

On Tue, Sep 27, 2016 at 10:53 AM, Francisco Delgado <fjd49 at cornell.edu>
> wrote:
>
>> Ok, the error occurs when I decrease by half the size of the triangles in
>> the wall cavities.
>>
>> On Tue, Sep 27, 2016 at 10:49 AM, Francisco Delgado <fjd49 at cornell.edu>
>> wrote:
>>
>>> Hi, I don't know what's that. Can you explain me a little the issue??
>>>
>>> On Tue, Sep 27, 2016 at 10:48 AM, Matthew Knepley <knepley at rice.edu>
>>> wrote:
>>>
>>>> On Tue, Sep 27, 2016 at 9:46 AM, Francisco Delgado <fjd49 at cornell.edu>
>>>> wrote:
>>>>
>>>>> Dear Pylith developers,
>>>>> I'm trying to run a simulation of a pressurised sphere surrounded by a
>>>>> viscoelastic shell and I get the following error
>>>>>
>>>>> *RuntimeError: Determinant of Jacobian (7.65279e-07) for cell 40 is
>>>>> smaller than minimum permissible value (1e-06)!*
>>>>>
>>>>> *The two most likely causes of this are highly distorted cells and
>>>>> nondimensionalization with a length scale that is much larger than the
>>>>> dimensions of the cells.*
>>>>>
>>>>> How can I solve it??
>>>>>
>>>>
>>>> Is your non-dimensionalization length right for your domain?
>>>>
>>>>    Matt
>>>>
>>>>
>>>>> Thanks
>>>>>
>>>>> --
>>>>> --------------------------------------------------------
>>>>> Francisco Delgado
>>>>> PhD student in Geological Sciences
>>>>> Cornell University
>>>>>
>>>>> _______________________________________________
>>>>> CIG-SHORT mailing list
>>>>> CIG-SHORT at geodynamics.org
>>>>> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/cig-short
>>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> CIG-SHORT mailing list
>>>> CIG-SHORT at geodynamics.org
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>>>>
>>>
>>>
>>>
>>> --
>>> --------------------------------------------------------
>>> Francisco Delgado
>>> PhD student in Geological Sciences
>>> Cornell University
>>>
>>
>>
>>
>> --
>> --------------------------------------------------------
>> Francisco Delgado
>> PhD student in Geological Sciences
>> Cornell University
>>
>
>
>
> --
> --------------------------------------------------------
> Francisco Delgado
> PhD student in Geological Sciences
> Cornell University
>
> _______________________________________________
> CIG-SHORT mailing list
> CIG-SHORT at geodynamics.org
> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/cig-short
>
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