CHT tutorials for OpenFOAM and CalculiX by prasadadhav · Pull Request #104 · precice/tutorials

prasadadhav · 2020-09-07T12:05:42Z

I have added the OpenFOAM+CalculiX CHT case, which have some issues from CalculiX side.
I took the general setup of the flap case from the FSI.

I have adapted the CHT part similar to the heat-exchanger case.

I am currently working on making a flow over the heat plate case similar to OF+Nutils. I will push as soon as I am done, working towards Issue #103 .

prasadadhav · 2020-09-07T14:13:58Z

I have set up a case for flow over hot plate, but in this case as well I am getting a same error as mention here.

Starting CHT analysis via preCICE...
About to enter preCICE setup in Calculix with names CalculiX and config.yml 
Setting up preCICE participant CalculiX, using config file: config.yml
---[precice]  This is preCICE version 2.1.0
---[precice]  Revision info: v2.1.0-2-g42abc38c
---[precice]  Configuring preCICE with configuration "./precice-config.xml"
---[precice]  I am participant "CalculiX"
Set ID Found 
Read data 'Temperature' found.
---[precice] ERROR:  The given Mesh ID "-1" is unknown to preCICE.

Next, I will try and reinstall the CalculiX adapter because I think at least the tried heat exchanger should have worked.

prasadadhav · 2020-09-07T14:56:59Z

The only thing to edit in the CalculiX part now is the material properties (to be consistent with the benchmark case).
Edit: could not really find the material properties anywhere.

*MATERIAL, Name=EL
** Material Properties
*ELASTIC
 400000, 0.3
*DENSITY
 3000
*SPECIFIC HEAT
446
*CONDUCTIVITY
50.,0

Hopefully, this is of help.

KyleDavisSA · 2020-09-07T18:56:04Z

I tried setting up the case as well and got segmentation faults using Heat-Flux and Temperature data types in the config.yml file. Did you experience this? I am going to look into this and open an issue if I find a problem. Perhaps I made a mistake in the setup of the problem.

KyleDavisSA · 2020-09-08T05:45:21Z

Is this meant to be for the flow over a plate CHT problem?

prasadadhav · 2020-09-08T06:06:46Z

Is this meant to be for the flow over a plate CHT problem?

@KyleDavisSA Yes. There is also one case which is modified FSI flap case.

I tried setting up the case as well and got segmentation faults using Heat-Flux and Temperature data types in the config.yml file. Did you experience this? I am going to look into this and open an issue if I find a problem. Perhaps I made a mistake in the setup of the problem.

No, I did not face this issue. Seems to be something else than what I am getting.

KyleDavisSA · 2020-09-08T12:40:36Z

Read data 'Temperature' found.
---[precice] ERROR: The given Mesh ID "-1" is unknown to preCICE.

I got the same error. The Heat-Flux needs to be defined on a surface, so it requires the interface.sur file to be defined. The temperature on a surface also needs to be given, so the boundary condition Sink-Temperature should probably be used here instead of Temperature. Could you supply the interface.sur file ot check if this is correct?

precice-bot · 2020-09-08T13:29:26Z

This pull request has been mentioned on preCICE Forum on Discourse. There might be relevant details there:

https://precice.discourse.group/t/precice-mesh-id-1-error-openfoam-calculix-cht/313/11

prasadadhav · 2020-09-16T10:27:39Z

I was able to make the flow over plate example work, with Sink-Temperature and Heat-Flux.
I used the default CalculiX adapter(with CCX v2.16) without any modifications.

I was also able to run the Heat exchanger tutorial with the new adapter.
Edit: Note The top is Velocity field, bottom is Temperature field.

You may see that the results are a bit weird, but if you see the image below they make sense.
I will try and correct my CacluliX set-up. I think BC is not correctly applied.

prasadadhav · 2020-09-24T13:58:04Z

@MakisH I have cleaned up the cases to the best of my knowledge.
Let me know if I missed something.

I have kept the .nam, .dfl, .flm files unlike the usual tutorials because I haven't figured out how to write a script for exporting the extra files each time we run a case.

😄

MakisH · 2020-09-24T21:27:04Z

Thank you for cleaning up, @alphaoo1! We are now down to 226 changed files.

I see changes across multiple tutorials and I am confused on what is exactly the purpose of this PR. Is it to add the flow-over-plate scenario we have with OpenFOAM, but with OpenFOAM and CalculiX? If yes, could you please remove any changes not related to this tutorial?

Is the solver supposed to be buoyantPimpleFoam or chtMultiRegionFoam?

prasadadhav · 2020-09-27T09:41:07Z

Thank you for cleaning up, @alphaoo1! We are now down to 226 changed files.

I see changes across multiple tutorials and I am confused on what is exactly the purpose of this PR. Is it to add the flow-over-plate scenario we have with OpenFOAM, but with OpenFOAM and CalculiX? If yes, could you please remove any changes not related to this tutorial?

This PR is for flow over plate with OpenFOAM and CalculiX.
I removed the extra one I modified case I had in CHT. There should be 38 files from my case. I don't know why there are files popping up. I even tried to clone the current develop directory and add my case to it, but still, there are files that I did not modify. And I am a bit reluctant to touch these files since somebody else must have changed them and I am not sure what to keep and what to delete.
Some tips are welcome here. 😅

Is the solver supposed to be buoyantPimpleFoam or chtMultiRegionFoam?

The solver is buoyantPimpleFoam. I copied the Fluid part from the nutils directory.
I did not change anything other than the preCICEdict as far as I remember.

MakisH · 2020-09-28T07:20:35Z

The additional files were there because your develop was a bit behind the precice:develop. I updated your branch and now there are 37 files, nice! 😄 I will now look into details.

Edit: how I did it:

# Also add the preCICE repository as a remote so we can pull from it
git remote add precice git@github.com:precice/tutorials.git

# Change to your develop and pull from the precice:develop
git checkout develop
git pull precice develop

# Change to your branch and merge from develop, then push
git checkout CHT_OF-CCX
git merge develop
git push origin CHT_OF-CCX

MakisH

I have a few comments mostly for consistency with other tutorials, having another look at which CalculiX files we can remove (try moving them and running the case), and a few more important suggestions for the run scripts.

Keep up the hard work, we are getting there! 👍 👍

MakisH · 2020-09-28T08:02:22Z

+        <use-data name="Heat-Flux"/>
+    </mesh>
+
+    <mesh name="Calculix_Mesh">


Inconsistency in the name style: OpenFOAM-Mesh vs Calculix_Mesh.

I suggest OpenFOAM-Mesh and CalculiX-Mesh.

prasadadhav · 2020-10-01T07:25:47Z

@MakisH In a nutshell I made the following changes:

Updated the Allrun and Allclean scripts.
Updated the Readme.
Updated precice-config.xml
Removed the headers from Fluid participant.
Removed unecessary files from Solid directory.

As for the Solid participant and it's files, I have added things one can do to generate those files.
This may be used as a backup options if some file gets deleted.
But as for a new comer, or someone who is new to CalculiX I think these might be complicated.
I myself am not aware of how to write the pre-process.fbd file which creates all the files (similar to what we have in FSI tutorials).
I will let you know when I am able to do that, o may be you can mention someone with expertise in CalculiX.
Looking forward to your comments and suggestions.

MakisH

Thank you for applying most of the suggestions already! Here are a few more ones (in most of them you can just apply the diff suggestions).

As for the Solid participant and it's files, I have added things one can do to generate those files.
This may be used as a backup options if some file gets deleted.
But as for a new comer, or someone who is new to CalculiX I think these might be complicated.

I agree that we should not assume previous CalculiX knowledge and I like that you added the steps in the README! 😄

I have not yet tried to run the tutorial, I will try after we resolve most of these points.

MakisH · 2020-10-01T08:58:58Z

+    # You can use CalculiX CGX to setup the structural simulation from sratch.
+    # This will re-generate the all.msh, fix1_beam.nam, interface_beam.nam files.
+    #
+    # # Prepare in silent mode
+    # echo "Preparing the ${Participant2} participant..."
+    # cd ${Participant2}
+    #     echo "  Executing cgx (provided by CalculiX, make sure this exists)..."
+    #     cgx -bg pre_flap.fbd > prepare_flap.log 2>&1
+    # cd ..


To check: does this actually work in this case?

In the README it looks like this is the respective step:

cgx -c Mesh_Coarse_OUT.inp

MakisH · 2020-10-01T09:34:54Z

+* **OpenFOAM and OpenFOAM adapter:** To make sure that everything is working properly, you should run the [similar OpenFOAM-OpenFOAM tutorial case](https://github.com/precice/openfoam-adapter/wiki/Tutorial-for-CHT:-Flow-over-a-heated-plate).
+
+### Generating CacluliX files
+After installing the CalculiX adapter, CalculiX on it's own should also be available in the system. If not, an easy to use precomplied [tool](http://www.calculixforwin.com/) may be used to produced the required files (the commands remain same, use the pre-processing option).


This is actually not correct. It is not necessary to compile a "normal" CalculiX to compile ccx_preCICE.

I think may be my wording was not clear, I was trying to say the same, we do not need to install "normal" CalculiX.
Isn't it installed directly when we installed the adapter?

If one runs make only in the adapter's repository, no. The user only needs to have the CalculiX code somewhere. But I agree that a CalculiX user would also install the normal ccx.

MakisH · 2020-10-01T09:42:42Z

+    <data:scalar name="Sink-Temperature-0"/>
+    <data:scalar name="Heat-Flux"/>


But if you use Heat-Flux-0 everywhere (also in the OpenFOAM and CalculiX adapters), then it should work. The OpenFOAM adapter supports this.

MakisH · 2020-10-01T09:43:40Z

@@ -0,0 +1,19 @@
+#!/bin/bash


Still needs to be deleted.

Co-authored-by: Gerasimos Chourdakis <chourdak@in.tum.de>

…moved

MakisH · 2020-10-07T08:13:42Z

@@ -1,18 +1,10 @@
-#!/bin/bash


This is good, keep it! It makes it explicit that this is a Bash script.

I meant to delete the file ./Fluid/runFluid, since we also have the ./runFluid

MakisH · 2020-10-07T08:14:13Z

@@ -1,5 +1,3 @@
-#!/bin/bash


Same here: do not remove this line.

MakisH · 2020-10-07T08:14:27Z

+ nactdog
+
+ nacteq


What is this file for?

MakisH · 2021-04-15T21:06:36Z

@alphaoo1 we restructured the tutorials as a larger project https://github.com/orgs/precice/projects/5

This contribution is still quite important, but I think it woul dbe much easier to close this now and submit a new PR again, with the new structure in mind. Since now most files are already there (OpenFOAM case, README.md, scripts, precice-config.xml), you can just add a new solid-calculix case in the flow-over-heated-plate directory. You can also be the first one to try out the new contributing guidelines and see if they help.

Thank you once more already for the work so far, I am only closing this to keep a better overview of what is actively open.

prasadadhav · 2021-04-16T13:04:45Z

@MakisH Yes, I will surely have a look at the contributions guidelines and see how can I contribute.
Currently busy with the comparisons of the XDEM+OF simulations for the proposal by Benjamin 😉

Alphaoo1 added 14 commits July 7, 2020 18:15

OpenFOAM CalculiX XY (issue#34)

155cd43

Name change for OpenFOAM-CalculiX XY case

a67ba13

Open+CCX flap CHT case

2a7d4ad

read me

e56ded3

Cleaned case

45150b0

Solo run inp

1485962

cleaned FSI folder

e594589

clean

0c9a376

clean deal.ii FSI

ed8fb7c

removed CHT additions

8949428

CHT files

1670bb6

OpenFoam+CCX flow over plate CHT case

ae3c7fc

Fluid edits and initial errors fix

105b61f

Allclean

2bac47f

Alphaoo1 added 2 commits September 7, 2020 16:37

Fine Solid mesh and relevant files for it, also added geom hdf files

1d9f8ef

FSI dir conflict fix

3f74565

MakisH changed the base branch from master to develop September 7, 2020 19:25

Alphaoo1 added 5 commits September 9, 2020 09:04

interface.sur exported for coarse mesh

d686d2d

files with Sink-Temperature

99fd0b9

changes

9595ff7

clean case

433b2d5

initial successful run

d43c830

Alphaoo1 added 5 commits September 27, 2020 11:05

deleted unnecessary files and flap cht case

7583dc5

cleaned fluid directory

2067e7e

starting from branch master with OF+CCX flow over plate tutorial added.

990249e

starting from branch develop with OF+CCX flow over plate tutorial added.

08f950b

starting from branch develop with OF+CCX flow over plate tutorial added.

6d16b68

Merge branch 'develop' into CHT_OF-CCX

77a60bc

Fix typo in case path

564c2bc

MakisH requested changes Sep 28, 2020

View reviewed changes

made changes asked for in comments

7555799

MakisH requested changes Oct 1, 2020

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prasadadhav and others added 7 commits October 7, 2020 07:43

Update CHT/flow-over-plate/buoyantPimpleFoam-CalculiX/Allrun

6f343ec

Co-authored-by: Gerasimos Chourdakis <chourdak@in.tum.de>

Update CHT/flow-over-plate/buoyantPimpleFoam-CalculiX/Allrun

27f4904

Co-authored-by: Gerasimos Chourdakis <chourdak@in.tum.de>

Update CHT/flow-over-plate/buoyantPimpleFoam-CalculiX/Allrun

b57eddf

Co-authored-by: Gerasimos Chourdakis <chourdak@in.tum.de>

Update CHT/flow-over-plate/buoyantPimpleFoam-CalculiX/README.md

1f3fe57

Co-authored-by: Gerasimos Chourdakis <chourdak@in.tum.de>

Update CHT/flow-over-plate/buoyantPimpleFoam-CalculiX/README.md

7a7cd84

Co-authored-by: Gerasimos Chourdakis <chourdak@in.tum.de>

Update CHT/flow-over-plate/buoyantPimpleFoam-CalculiX/Allrun

f680675

Co-authored-by: Gerasimos Chourdakis <chourdak@in.tum.de>

unnecessary commands for removing and replacing Fluid/0/ directory re…

714541c

…moved

MakisH reviewed Oct 7, 2020

View reviewed changes

made changes to bash files. deleted the extra file

6ec3458

uekerman mentioned this pull request Dec 21, 2020

Flatten solver hierarchy for flow-over-heated-plate #136

Closed

MakisH closed this Apr 15, 2021

		<data:scalar name="Sink-Temperature-0"/>
		<data:scalar name="Heat-Flux"/>

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