[Getdp] Temperature unchanged

stefan.braun at smartcae.de stefan.braun at smartcae.de
Mon Feb 4 01:21:18 CET 2013


Hi Matti,
i try out your example. But if i look at the temperature out of tThe.pos 
the temperature is unchanced.
Could you please give me a hint what i have to change.
Thank you very much,
Best regards,
Stefan Braun

SmartCAE, Munich

On Monday, February 4, 2013 12:35:59 AM UTC+1, stefan... at smartcae.de wrote:
>
> Hi Matti,
> thank you very much for your help. Now i come a big step further. 
> I hope this is one of my last questions. Where i have to change the number 
> of elements in radial direction.
> Thank you very much,
> Best regards,
> Stefan Braun
>
> SmartCAE, Munich
>
>
>
>
> On Sunday, February 3, 2013 3:02:47 PM UTC+1, Matti Pellikka wrote:
>>
>> Hi, I've updated indheat.pro at 
>> http://onelab.info/wiki/Magnetodynamics_with_cohomology_conditions 
>> with coupled thermal analysis. 
>> It first solves the time harmonic eddy currents in the workpiece and 
>> then uses the heat generated by them as heat source for a transient 
>> heat conduction problem. As boundary conditions, there are both 
>> convection and radiation heat transfer terms present. To solve it, run 
>> the command 
>>
>> getdp indheat.pro -solve TheDyn -pos TheDyn 
>>
>> -- 
>> Matti Pellikka, Researcher 
>> Tampere University of Technology, Electromagnetics 
>>
>> On 3 February 2013 13:56, Matti Pellikka <matti.p... at tut.fi> wrote: 
>> > Hi Stefan, 
>> > 
>> > On 3 February 2013 01:41,  <stefan... at smartcae.de> wrote: 
>> >> Hi Matti, 
>> >> i have two additionally questions to the example. 
>> >> If i change the frequence from 50 to 5000 Hz i see no real skin 
>> effect. 
>> >> Could it be possible that the mesh is not fine enough? 
>> > 
>> > Yes, you should have a couple of finite element layers per skin depth. 
>> > In this case, about ten times more elements in the radial direction 
>> > ... 
>> > 
>> >> My second questions is, how is it possible to integrate the 
>> temperature and 
>> >> the nonlinear mu curve. 
>> >> If found an example in the group 
>> >> 
>> >> http://www.geuz.org/pipermail/getdp/2000/000111.html 
>> >> http://geuz.org/pipermail/getdp/2000/000125.html 
>> >> 
>> >> but the attachment of the working file in 000125.html is missing. 
>> >> 
>> > 
>> > For nonlinear mu curve you can study the example at 
>> > https://geuz.org/trac/getdp/wiki/MagnetoStaticsNonLinear (username: 
>> > getdp, password: getdp). With nonlinearity however, the eddy current 
>> > problem is no longer strictly time harmonic. Transient analysis should 
>> > be used instead. 
>> > 
>> > https://geuz.org/trac/getdp/wiki/ChainedResolutions is a simple 
>> > example how to couple two problems, for example thermal and magnetic. 
>> > 
>> >> 
>> >> Thank you very much for your help. 
>> >> Best regards, 
>> >> Stefan Braun 
>> >> 
>> >> 
>> >> 
>> > 
>> > -- 
>> > 
>> > Matti Pellikka, Researcher 
>> > Tampere University of Technology, Electromagnetics 
>> > 
>> >> 
>> >> 
>> >> 
>> >> 
>> >> 
>> >> On Tuesday, January 29, 2013 11:53:49 PM UTC+1, stefan... at smartcae.dewrote: 
>> >>> 
>> >>> Hi Matti, 
>> >>> thank you for your help. Now it works. 
>> >>> Best regards, 
>> >>> Stefan Braun 
>> >>> 
>> >>> SmartCAE, Munich 
>> >>> 
>> >>> On Tuesday, January 29, 2013 5:03:18 PM UTC+1, Matti Pellikka wrote: 
>> >>>> 
>> >>>> Hi, 
>> >>>> 
>> >>>> I was able to reproduce the issue with the latest nightly build on 
>> 64 
>> >>>> bit Windows 7. I'm investigating the issue, but as a temporary fix, 
>> >>>> running the mesher from Windows Command Prompt seems to work. 
>> >>>> 
>> >>>> Open the Windows Command Prompt and go to the directory where both 
>> >>>> gmsh.exe and indheat.geo are. Run the command: 
>> >>>> 
>> >>>> gmsh indheat.geo -3 
>> >>>> 
>> >>>> This creates the mesh file indheat.msh, which you can examine 
>> normally 
>> >>>> using the graphical interface of Gmsh. To solve the induction 
>> heating 
>> >>>> problem, have getdp.exe, indheat.pro and indheat.msh in the same 
>> >>>> directory and in that directory run in the Command Prompt the 
>> command 
>> >>>> 
>> >>>> getdp indheat.pro -solve MagDynTOComplex -pos MagDynTO 
>> >>>> 
>> >>>> You can examine the resulting .pos files using the graphical 
>> interface of 
>> >>>> Gmsh. 
>> >>>> 
>> >>>> Best regards, 
>> >>>> 
>> >>>> -- 
>> >>>> Matti Pellikka, Researcher 
>> >>>> Tampere University of Technology, Electromagnetics 
>> >>>> 
>> >>>> 
>> >>>> On 29 January 2013 13:12,  <stefan... at smartcae.de> wrote: 
>> >>>> > Hello Matti, 
>> >>>> > thank you very much for your help. 
>> >>>> > I tried the new build 2.6.2 gmesh and the bulid of getdp 2.2.2 and 
>> i 
>> >>>> > come 
>> >>>> > little bit further. 
>> >>>> > I have no error messages and the mesher starts. 
>> >>>> > When the mesher reaches reducing cell complex the mesher crashes. 
>> >>>> > Do you have any idea how to solve this problem, 
>> >>>> > Thank you very much, 
>> >>>> > 
>> >>>> > Best regards, 
>> >>>> > Stefan Braun 
>> >>>> > 
>> >>>> > SmartCAE, Munich 
>> >>>> > 
>> >>>> > On Monday, January 28, 2013 10:02:52 AM UTC+1, Matti Pellikka 
>> wrote: 
>> >>>> >> 
>> >>>> >> Hi Stefan, 
>> >>>> >> 
>> >>>> >> The cohomology computation commands on those lines didn't make it 
>> to 
>> >>>> >> the current release version 2.6.1 of Gmsh. However, those 
>> commands 
>> >>>> >> should be available in tomorrow's nightly builds of the 
>> development 
>> >>>> >> version. 
>> >>>> >> 
>> >>>> >> Alternatively, you can compile the current development version by 
>> >>>> >> yourself, check that the build option ENABLE_KBIPACK is ON to 
>> enable 
>> >>>> >> the cohomology computation. 
>> >>>> >> 
>> >>>> >> I suspect that you also need the latest development version of 
>> GetDP 
>> >>>> >> to compute the example. 
>> >>>> >> 
>> >>>> >> -- 
>> >>>> >> Matti Pellikka, Researcher 
>> >>>> >> Tampere University of Technology, Electromagnetics 
>> >>>> >> 
>> >>>> >> On 27 January 2013 00:57,  <stefan... at smartcae.de> wrote: 
>> >>>> >> > Hello Group Members, 
>> >>>> >> > i want to try out a example of onelab.info about induction 
>> heating. 
>> >>>> >> > 
>> >>>> >> > If i import the *.geo file in gmsh i get the following error 
>> >>>> >> > messages. 
>> >>>> >> > 
>> >>>> >> > 
>> >>>> >> > 
>> http://onelab.info/files/getdp/Magnetodynamics/GMSH_GETDP/indheat.geo 
>> >>>> >> > 
>> >>>> >> > 
>> >>>> >> > Info    : Reading 'C:\...\indheat.geo'... 
>> >>>> >> > Info    : Starting subloop 1 in Line Loop 543 (are you sure 
>> about 
>> >>>> >> > this?) 
>> >>>> >> > Error   : 'C:\...\indheat.geo', line 176 : syntax error (() 
>> >>>> >> > Error   : 'C:\...\indheat.geo', line 177 : syntax error (() 
>> >>>> >> > Error   : 'C:\...\indheat.geo', line 186 : syntax error (() 
>> >>>> >> > Error   : 'C:\...\ndheat.geo', line 187 : syntax error (() 
>> >>>> >> > 
>> >>>> >> > 
>> >>>> >> > 
>> >>>> >> > Thank you very much help on this problem. 
>> >>>> >> > Best regards, 
>> >>>> >> > Stefan Braun 
>> >>>> >> > 
>> >>>> >> > SmartCAE, Munich 
>> >>>> >> > 
>> >>>> >> > _______________________________________________ 
>> >>>> >> > getdp mailing list 
>> >>>> >> > ge... at geuz.org 
>> >>>> >> > http://www.geuz.org/mailman/listinfo/getdp 
>> >>>> >> > 
>> >>>> >> 
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