[petsc-users] The possibility of applying DA to governing multi-block data structure

[C.-C. Chiou]

Matt,

Thank you.

Now, I'm dealing with a work like that: (for example)

                  ______
                  |           |
                  |           |
 ________ |           |
|                 |           |
|       f1       |    f2    |
|________ |           |
                  |           |
                  |           |
                  |_____ |

(or please see the attached file "blocks_fig1.png" )

I have a physical domain partitioned into two blocks f1 and f2 (or more for
other case),
and I need to solve Navier-Stoke equations concerning on such domain by
multi-block solver,
with two connected structured meshes respectively  for f1 and f2.

I wonder whether case like the above for example is considered as one of
experiment.

Regards.


Chuei-Ching Chiou



On Wed, Aug 22, 2012 at 6:50 PM, Matthew Knepley <knepley at gmail.com> wrote:

> On Wed, Aug 22, 2012 at 2:52 AM, C.-C. Chiou <ccchiou2012 at gmail.com>wrote:
>
>> Dear Mathew,
>>
>> Thanks for your response!
>>
>> At line 645 in the source code,
>> http://www.mcs.anl.gov/petsc/petsc-dev/include/petscsnes.h.html ,
>> some SNES routines for multi-block solver were listed.
>> Is there any source code for specific testing PDE problem with these
>> routines?
>>
>
> That is an experiment that does not yet work.
>
>
>> In addition, is the KSP version available?
>>
>
> Its called ASM.
>
>    Matt
>
>
>> Sincerely regards.
>>
>> Chuei-Ching Chiou
>>
>>
>> On Wed, Aug 8, 2012 at 9:06 PM, Matthew Knepley <knepley at gmail.com>wrote:
>>
>>> On Wed, Aug 8, 2012 at 2:30 AM, C.-C. Chiou <ccchiou2012 at gmail.com>wrote:
>>>
>>>> Dear all,
>>>>
>>>> For concerning more general geometry of physical domain, for some
>>>> situations,
>>>> we need to apply the multi-block mesh. The attached figure (or
>>>> alternatively the following link) illustrates one of examples.
>>>>
>>>> https://dl.dropbox.com/u/17189529/share_documents/IMAG0003.jpg
>>>>
>>>> Have you ever dealt with such kind of case with application of the
>>>> PETSc object 'DA' ?
>>>>
>>>
>>> Our intention for this is that you use a DMComposite structure. Let us
>>> know if the documentation is unclear
>>> on anything, since it is somewhat new.
>>>
>>>   Thanks,
>>>
>>>      Matt
>>>
>>>
>>>> Suppose we build multiple DA(or DM) for governing the multi-block data
>>>> structure,
>>>> in other words, we respectively build a DA for each block of mesh.
>>>> Especially in parallel computing,
>>>> how can we manage and control the communications between blocks of data
>>>> accurately and efficiently?
>>>> And, how can we ensure the correctness of parallel computational
>>>> results?
>>>>
>>>> I wonder whether some possible application of PETSc object 'DA' (or DM)
>>>> is sufficient for dealing with cases in multi-block mesh.
>>>>
>>>>
>>>> Sincerely regards.
>>>>
>>>>
>>>> Chuei-Ching Chiou
>>>>
>>>>
>>>> --
>>>> Chuei-Ching Chiou,
>>>> Ph. D student,
>>>> Aerothermal & Plasma Physics Laboratory
>>>> Department of Mechanical Engineering
>>>> National Chiao Tung University
>>>> Hsinchu 30010, TAIWAN
>>>> TEL: +886-35712121 ext. 55175
>>>> E-mail: C <staystay.me99g at g2.nctu.edu.tw>CChiou2012 at gmail.com
>>>>
>>>>
>>>
>>>
>>> --
>>> What most experimenters take for granted before they begin their
>>> experiments is infinitely more interesting than any results to which their
>>> experiments lead.
>>> -- Norbert Wiener
>>>
>>
>>
>>
>> --
>> Chuei-Ching Chiou,
>>  Ph. D student,
>> Aerothermal & Plasma Physics Laboratory
>> Department of Mechanical Engineering
>> National Chiao Tung University
>> Hsinchu 30010, TAIWAN
>> TEL: +886-35712121 ext. 55175
>> E-mail: C <staystay.me99g at g2.nctu.edu.tw>CChiou2012 at gmail.com
>>
>>
>
>
> --
> What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which their
> experiments lead.
> -- Norbert Wiener
>



-- 
Chuei-Ching Chiou,
Ph. D student,
Aerothermal & Plasma Physics Laboratory
Department of Mechanical Engineering
National Chiao Tung University
Hsinchu 30010, TAIWAN
TEL: +886-35712121 ext. 55175
E-mail: C <staystay.me99g at g2.nctu.edu.tw>CChiou2012 at gmail.com
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