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Dynamic Mesh for a Gear Pump

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Old   May 12, 2014, 15:21
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Dropbox took the link for the PDF down due to a Dropbox vulnerability. You can find the PDF on the website of my University:

http://upcommons.upc.edu/pfc/bitstre...9/1/memory.pdf

May a moderator edit the first post to reflect this change? Thanks

Alejandro
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Old   May 12, 2014, 15:43
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Originally Posted by TRT View Post
May a moderator edit the first post to reflect this change? Thanks
Done!

Although if Dropbox has a vulnerability with PDF files... this is a bit annoying
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Old   May 12, 2014, 17:03
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Thanks a lot.

It was a privacy issue. If you clicked a link in a PDF (or other kind of shared file in Dropbox) the website linked could obtain the shared link and access the file.

More info: https://blog.dropbox.com/2014/05/web...-shared-links/
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Old   June 3, 2014, 04:52
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I wrote ./runAllMesh in the terminal window but it syas that the permission is denied. As I am new to OpenFOAM so need some help over here. ANybody available for helping me out?

Last edited by t.asim; June 9, 2014 at 05:42.
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Old   June 10, 2014, 06:04
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Help required please!!! I changed the working directory in the terminal window to gearMain, and wrote chmod +x ./runAllMesh, but nothing happens. It simply goes to the next line. I was expecting it to take some time for mesh generation. Similarly, after performing the above command, I wrote chmod +x ./runAllMove and chmod +x ./runAllPimple but nothing happens. ANy ideas as to what is going on? Regards.
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Old   June 10, 2014, 14:14
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The chmod +x command only adds execution permissions to the files, so that you can now run them by typing:

./runAllMesh (for instance)

This is good reading about the Linux terminal:
http://www.howtogeek.com/140679/begi...inux-terminal/ (more links in the article)
http://lifehacker.com/5743814/become...ving-shortcuts

Keep in mind that I started using Linux 2 years before this project was started, it takes some time to get used to the terminal, but after you learn it, it is extremely useful.
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Old   June 12, 2014, 09:08
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Dear Alejandro, thanks a lot for your reply. I have started reading the the information provided on these links. By the time, I used chmod for permission, and then used ./runAllMesh but it gives a list of errors (please see the attachment). It seems that there is something related to the structure of the folders. Best Regards.
Attached Images
File Type: jpg 1.jpg (92.8 KB, 47 views)
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Old   June 12, 2014, 13:02
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The "folder exists" warning is not a problem. But you need to do the chmod thing on every executable, it's because of this that you are getting the "permission denied" error.

But you really need more practice on your own if you are having trouble with this.
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Old   June 15, 2014, 16:27
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Dear Alejandro, If you see the snapshot that I attached in my previous post, I have indeed used chmod command before ./runAllMesh but it gave me errors mentioned. I have tried it a few more times now, also tried to get information online as to what is the problem, but still getting the same errors.
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Old   August 16, 2014, 23:11
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I'm in china too, and I need these files for my work to study this dynamicMesh, can you send it to me!
wwb@sjtu.edu.cn Thank you!
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Old   October 22, 2014, 09:50
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Thank you Alejandro for your generous contribution! Your work has helped me tremendously.

Miha

Last edited by miha.pog; October 22, 2014 at 09:52. Reason: Forgot to enter name :P
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Old   March 23, 2017, 09:27
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Quote:
Originally Posted by Tobi View Post
Hi TRT,

do you think that this will work for complex 3D simulations too? Its kind a hard work for such a job. I am interested in simulation of screw blower...


http://www.industriezeitschrift.de/g...er_element.jpg
Hi Tobi,

Did you ever end up doing any simulations of a screw blower?
I would be interested to know what approach you ended up taking.

Thanks,
Pasi
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Old   August 18, 2017, 10:48
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Hi Alejandro.

Did you worked with internal walls? I'm trying to place baffles in a 2D axisymmetric clarifier using extrudeToRegionMesh, but it doesn't work. If I use extrudeMesh the internal walls disappear.

Thank you so much
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Old   January 14, 2021, 15:38
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[QUOTE=TRT;368540]Hi all. My name is Alejandro Roger Ull. This spring I've been working on my final project for my aerospace engineering degree. I did a study on how to work with dynamic meshes in OpenFOAM, in particular for its application to a gear pump simulation. I want to share my work with you, so that anyone that may find it helpful can access to it.

Gear Pump Animation

The work consists on meshing the geometry with snappyHexMesh in parallel and extruding it with extrudeMesh to make it two-dimensional. Then a custom boundary condition for the movement of the mesh is created. Finally the simulation is run in parallel, by generating an initial mesh, moving it as much as possible, up to acceptable limits of deformation, and finally replacing it with a new mesh. Everything is completely automated.

You can download the document here. (2.63 MB) (CC BY-NC-SA 3.0)
Also, all the files I used can be downloaded here. (9.12 MB) (CC BY-NC-SA 3.0)

Are the case files still available in 2021?! Stumbled on this fine work but now deleted from the dropbox link..
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Old   April 21, 2021, 06:32
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Originally Posted by jwillie2000 View Post
Hi TRT,
You did a good job and thanks for sharing. I am about to do a moving mesh simulation in ANSYS Workbench and I am new to it. So i am trying to gather some info. The gear pump u described is similar to what i am looking at, even though the principles are a bit different. I wanted to know whether you did a similar mesh in ANSYS Meshing?

Thanks!
Jimmy
Hi James Willie,this is a meesage from 2021,could you please send TRT's gear pump files to me?Cause the dropbox he gave was out of date...I wonder if you downloaded it previously.
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Old   April 22, 2021, 07:17
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Do you mean the gear pump tutorial for OpenFoam? I can share it with you if you send me your email address.


Thanks!
James
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Old   April 23, 2021, 06:42
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Originally Posted by jwillie2000 View Post
Do you mean the gear pump tutorial for OpenFoam? I can share it with you if you send me your email address.


Thanks!
James
Thank you so much James!My email is gwf-1000rd@outlook.com
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Old   April 23, 2021, 06:53
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I'm interested as well please! djasonmorg@yahoo.co.uk.

Thanks in advance
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boundary condition, extrudemesh, movemesh, parallel, snappyhexmesh

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