[Getdp] question

[Gilles Vogt]

Hi,

I'm using command line to generate and save mesh ("gmsh -2" or "-3" cf.
doc.). If your mesh is correctly saved, I guess the error might come from
your input files (.pro) : is the domain where heat equation is defined
correctly set ? Is it a physical surface (not line) in your .geo file ?

Best regards,

--
Gilles VOGT


2015-05-21 18:07 GMT+02:00 Park, Moongyu <park633 at purdue.edu>:

>  Hi,
>
>
>
>   Thank you for your email.
>
>
>
> When I run GetDp for Heat equation on rectangular domain, I see no problem.
>
> But I have the same error message if I run the equation on the annulus.
>
> When I generate 2D mesh, I just click "2D" in  Gmsh.
>
> Can you give any comment for generating and saving mesh file?
>
>
>
> mp
>
>
> Dr. Moongyu Park
> Department of Mathematics
> Purdue University
> (Phone) 765- 494-4146
> email: park633 at purdue.edu
> West Lafayette, IN 47907
>   ------------------------------
> *From:* Gilles Vogt [vogtgilles at gmail.com]
> *Sent:* Thursday, May 21, 2015 4:41 AM
> *To:* Park, Moongyu
> *Cc:* getdp at geuz.org
> *Subject:* Re: [Getdp] question
>
>   Hi,
>
>  My guess is that your model is not correctly meshed. For example, a 1D
> mesh of a 2D problem gives the error you get.
>
>  Best regards,
>
>   --
> Gilles VOGT
>
> 2015-05-21 5:48 GMT+02:00 Park, Moongyu <park633 at purdue.edu>:
>
>>   Hi,
>>
>>
>>
>>    Now I'm testing several models by running GetDp.
>>
>> When I run GetDp for Heat equation (Heat.pro)  on the annulus,
>>
>> I got no result with  the following error message:
>>
>>
>>
>> ...
>>
>> P r o c e s s i n g . . .
>>
>> Info : InitSolution[SysHeat]
>>
>> Info : TimeLoopTheta ...
>>
>> Info : Theta Time = 0.01 s (TimeStep 1)
>>
>> Info : Generate[SysHeat]
>>
>> Warning : Generated system is of dimension zero
>>
>> Info : (Thu May 21 03:41:20 2015, CPU = 0.0468003s, Mem = 7.92578Mb)
>>
>> Info : Solve[SysHeat]
>>
>> Warning : Zero-size system: skipping solve!
>>
>> Info : (Thu May 21 03:41:20 2015, CPU = 0.0468003s, Mem = 7.92969Mb)
>>
>> Info : Theta Time = 0.02 s (TimeStep 2)
>>
>> Info : Generate[SysHeat]
>>
>> Warning : Generated system is of dimension zero
>>
>> Info : (Thu May 21 03:41:20 2015, CPU = 0.0468003s, Mem = 7.92969Mb)
>>
>> Info : Solve[SysHeat]
>>
>> Warning : Zero-size system: skipping solve!
>>
>> Info : (Thu May 21 03:41:20 2015, CPU = 0.0468003s, Mem = 7.92969Mb)
>>
>> Info : Theta Time = 0.03 s (TimeStep 3)
>>
>> Info : Generate[SysHeat]
>>
>> ....
>>
>>
>>
>> Can you explain why I have the message, "dimension zero"?
>>
>> Thank you.
>>
>>
>>
>> mp
>>
>>
>>
>>
>>
>>
>> Dr. Moongyu Park
>> Department of Mathematics
>> Purdue University
>> (Phone) 765- 494-4146
>> email: park633 at purdue.edu
>> West Lafayette, IN 47907
>>
>> _______________________________________________
>> getdp mailing list
>> getdp at geuz.org
>> http://www.geuz.org/mailman/listinfo/getdp
>>
>>
>
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