[CIG-LONG] Help! SNAC Benchmark: Parallel-Plate Viscometer

[Jean Liu]

Hi Eunseo!

I tried that before, as well, and I ended up getting an asymmetric  
pattern for stress.. (I attached the screenshot to this email)

- Jean




Quoting Eunseo Choi <echoi at ldeo.columbia.edu>:

> Hi, Jean
>
> No-slip conditions should be added on the moving walls.
> So, insert the following block of XML code into each of the top and
> bottom BC sections:
> ==================
> <struct>
>    <param name="name"> vx </param>
>    <param name="type"> double </param>
>    <param name="value"> 0.0 </param>
> </struct>
> <struct>
>    <param name="name"> vz </param>
>    <param name="type"> double </param>
>    <param name="value"> 0.0 </param>
> </struct>
> ==================
>
> And please update me on the results!
> Thanks.
>
> Eunseo
>
> ps. Do you mind posting this reply on the cig-long list?
>
>
> Jean Liu wrote:
>> Hi Eunseo!
>>
>> I thought it was straightforward, too, but when I ran it, my   
>> velocity vectors looked a bit different from yours: my velocities   
>> were greater at the wall velocity boundary condition, then at the   
>> part where the material is being squeezed out. Plus, to compare to   
>> the second invariant of stress, I just added the shear and normal   
>> components on paraview and got different numerical values (but   
>> similar patterns).
>>
>> Could you take a look at my input file? I'm not sure if it's a   
>> problem with my installation of SNAC (when I ran make check, there   
>> were quite a few Fails), or if everything is okay..
>>
>> I also attached a screenshot of my Paraview results.
>>
>> Thanks for all of you help again, Eunseo!! I'm sorry for being such  
>>  a nuisance..
>>
>> - Jean
>>
>>
>>
>>
>>
>> Quoting Eunseo Choi <echoi at ldeo.columbia.edu>:
>>
>>> Dear Jean
>>>
>>> I produced the benchmark results but don't have the original input file.
>>> As far as I remember, it should be straightforward to construct an
>>> input file for that problem.
>>> What are the problems you ran into?
>>>
>>> Eunseo
>>>
>>> Jean Liu wrote:
>>>> Hi!
>>>>
>>>> I was wondering if anyone has the input file for the SNAC   
>>>> benchmark  parallel-plate viscometer problem that was used for   
>>>> the figures in  the SNAC manual?
>>>> I'm trying to get a comparison for my output, but I'm running   
>>>> into  a  few problems...
>>>>
>>>> Thanks!
>>>>
>>>> - Jean
>>>>
>>>> _______________________________________________
>>>> CIG-LONG mailing list
>>>> CIG-LONG at geodynamics.org
>>>> http://geodynamics.org/cgi-bin/mailman/listinfo/cig-long
>>>>
>>>
>>>
>>> -- 
>>> =====================================
>>> Eunseo Choi
>>> Post-Doctoral Research Scientist
>>>
>>> Lamont-Doherty Earth Observatory
>>> 305c Oceanography
>>> P.O. Box 1000
>>> 61 Rt. 9W
>>> Palisades, NY 10964-8000
>>>
>>> http://www.ldeo.columbia.edu/~echoi
>>> Phone: 845-365-8813 Fax: 845-365-8156
>>> =====================================
>>
>>
>> ------------------------------------------------------------------------
>>
>
>
> -- 
> =====================================
> Eunseo Choi
> Post-Doctoral Research Scientist
>
> Lamont-Doherty Earth Observatory
> 305c Oceanography
> P.O. Box 1000
> 61 Rt. 9W
> Palisades, NY 10964-8000
>
> http://www.ldeo.columbia.edu/~echoi
> Phone: 845-365-8813 Fax: 845-365-8156
> =====================================


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