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[ICEM] Problems adjusting a structured grid to a new baffle geometry |
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October 4, 2012, 11:32 |
Problems adjusting a structured grid to a new baffle geometry
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#1 |
Senior Member
Sören
Join Date: Mar 2012
Posts: 102
Rep Power: 14 |
Hi,
I want to adjust an existing grid to a baffle that I implemented in the Geometry. But I don't have any idea how to do this - it seems more or less impossible. What do you think how to do this? Should I stay with structured mesh or use unstructured? The ICEM 14.0 files are ayailable with these DropBox links https://dl.dropbox.com/u/77194917/Modellierung2.atr https://dl.dropbox.com/u/77194917/Modellierung2.blk https://dl.dropbox.com/u/77194917/Modellierung2.fbc https://dl.dropbox.com/u/77194917/Modellierung2.prj https://dl.dropbox.com/u/77194917/Modellierung2.tin and a picture of the baffle https://dl.dropbox.com/u/77194917/baffle.png Best regards, Sören |
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October 8, 2012, 06:41 |
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#2 |
Senior Member
Christoph
Join Date: May 2011
Location: Germany
Posts: 182
Rep Power: 17 |
I didn't follow that. Do you want to adjust a previous blocking (form a similar topology) to a new geometry?!
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October 8, 2012, 07:01 |
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#3 |
Senior Member
Sören
Join Date: Mar 2012
Posts: 102
Rep Power: 14 |
Hi,
you are right. I have an existing blocking and I want to adjust this blocking to a new geometry. The difference between the new and old geometry is the baffle. I can't see how it could work...so I hoped that some here has an idea...? |
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October 8, 2012, 11:04 |
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#4 |
Senior Member
Christoph
Join Date: May 2011
Location: Germany
Posts: 182
Rep Power: 17 |
do the outer and inner cylinder still have the same diameter?
so only thing you want to do is to insert two additional baffles? if so, take your blocking, split at the new created surfaces and align edges to curves . do the membranes break through these baffles!? |
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October 8, 2012, 11:55 |
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#5 |
Senior Member
Sören
Join Date: Mar 2012
Posts: 102
Rep Power: 14 |
Hi,
the diameter of the inner and outer cylinder don't change. What I am trying to do is to adjust the blocking (Modellierung2.blk) to the geometry (Modellierung2.tin). The geometry I've posted already contains the new geometry. I'm sorry, I made myself not so clear in this point. At contactpoints the membranes break through the baffles. |
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October 9, 2012, 06:29 |
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#6 | |
Senior Member
Christoph
Join Date: May 2011
Location: Germany
Posts: 182
Rep Power: 17 |
Quote:
it would be easier to use your previous (original) geometry and just transform geometry (e.g. copy cover disc geometry of your cylinder with a specified offset in y-direction to the place, where the baffles should be), and then split your blocking at these new surfaces. There's a option to copy projection. But you can also use a new geometry (.tin-file). But here, you have the problem, that there are no assignments at all (no edge to curve projection etc). So this would be much more hassle. Just give me a feedback, if it won't work and I'll take a deeper look at it tomorrow. Greetings Christoph |
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October 9, 2012, 08:43 |
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#7 |
Senior Member
Christoph
Join Date: May 2011
Location: Germany
Posts: 182
Rep Power: 17 |
is there any heat transfer through the baffle? then you have to create a fluid/fluid domain interface with thin material option and no slip wall. Otherwise (with solid domain) you'll get mesh problems.
Last edited by energy382; October 9, 2012 at 09:24. |
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October 10, 2012, 05:53 |
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#8 |
Member
Tamil Nadu
Join Date: Oct 2012
Posts: 44
Rep Power: 13 |
Hello All,
I want to do analysis of heat transfer from water flowing through pipes submerged inside concrete. I am modelling in GAMBIT and wish to analyse it on Ansys FLUENT. Can anybody help me out, how to model and simulate? Does any tutorials exist? |
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October 10, 2012, 06:00 |
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#9 | |
Senior Member
Sören
Join Date: Mar 2012
Posts: 102
Rep Power: 14 |
@energy382
- heattransfer is neglectable. - Quote:
@nkme2007 can you first provide some data on your problem: geometry, some pictures maybe, I guess you would like to use structured grid This will help to better understand your case. (I have no knowledge of GAMBIT, I can only try to give you some general blocking-advice or some ICEM blocking...) Regards, Sören |
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October 10, 2012, 06:06 |
model a fluid flow through pipes that is submerged in Concrete so as to measure heat
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#10 |
Member
Tamil Nadu
Join Date: Oct 2012
Posts: 44
Rep Power: 13 |
Thank you for responding despaired student,
My problem is to model a fluid flow through pipes that is submerged in Concrete so as to measure heat transfer. The picture... The fluid is subjected flow through the pipes in the 2D image and I wish to find the temperature distribution. |
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October 10, 2012, 06:32 |
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#11 |
Senior Member
Sören
Join Date: Mar 2012
Posts: 102
Rep Power: 14 |
The blocking looks good (at least I think so...). In front I'm working with OpenFoam for the simulationpart so I doubt that I can give you a good advise.
But what I noticed on your picture is that there is no grid within the pipes - correct? Possibility 1) If you want to simulate the heat-transfer of for example from a fluid running through the pipes into the concrete you will also need a mesh for the fluid in the pipes. This means you will have a two-phase model. Possibility 2) It might be possible to set a constant temperature at the borders of the pipes. This might be less precise (denpending on the precision level you need and the physics (velocity, heattransfer-coefficient, etc.) but easier because you need no 2-phase modelling. --> These are just some guesses, I really do not have any experience with AnsysFluent. I just can guess from what I know from OpenFoam --> One thing about what data to provide: usually the users (especially the more experienced) demand more information meaning they want files so that they can open your case on their computers. |
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October 10, 2012, 06:57 |
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#12 |
Member
Tamil Nadu
Join Date: Oct 2012
Posts: 44
Rep Power: 13 |
Thank you despired student,
I have no idea about how to simulate flow of fluid in the pipes (based on possibility 1, but this is the best one as even i am thinking on). But, I dont think the possibility works out as the fluid temperature varies from place to place as it flows. Will the cfd-online allow me to upload the case files? And, can you get me my problem solved if you know anyone on fluent? |
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October 10, 2012, 07:19 |
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#13 | ||
Senior Member
Sören
Join Date: Mar 2012
Posts: 102
Rep Power: 14 |
Quote:
Quote:
But you have also posted your problem in the wrong thread. This thread is about blocking/meshing and for ICEM Thread: -->[ICEM]<-- Problems adjusting... Maybe you shoulod open a new topic with your problem maybe in the FLUENT part: Forum > Software User Forums > ANSYS > FLUENT |
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