Deforming mesh in fluent
 

Hi,

My problem is as follows. A deformable container with a minute opening contains fluid. When the walls are compressed the fluid should be forced through the opening. Suggest me suitable methods involving deforming meshes and using user defined functions for the same using Fluent.

I think deformable problem can be solved with dynamic mesh module in fluent.
and I have a presentation material including introduction and tutorial.
Let me know your email address. I can send pdf file to you.

Thanks a lot Jemyungcha. My e mail: hari1041988@yahoo.com

i need too
 

please send to my email roryhelto@gmail.com

Depends on the geometry of the container. For example if it is a cylinder like a can you could apply a sinusoidal deforming profile along the cylinder walls like crushing the can in your hand for which I would say take a look at the 2D tutorial which has a flexible oscillating membrane from which you can adapt the UDF to 3D. Or if it is being deformed axially like treading on the can with your foot take a look at the 3D tutorial for the in-cylinder model which describes piston movement. Most likely whatever you are doing you will need to be using a tetrahedral mesh using the spring analogy and smoothing but you will get a better idea if you have a look at the afore mentioned tutorials.

Neil

Hi,

Jemyungcha and Trev, would you both be able to send me the files you mentioned. I have Fluent 12 and the deformation tutorial covers rigid body motion only - the users guide isn't much better. Much appreciated.

Neil

Hello guys! Can you send files me too. My e-mail: go_the_way_06@yahoo.com

Send me plz,, :)
huget_teguh@ymail.com

Hi
would you send it to me as well, will be very interesting for me,
emruz246@yahoo.com

hi
Could you please upload it to mediafile or somewhere.
so every one can download it.
thanks
hung

Hi Jemyungcha
would you send it to me as well, will be very interesting for me,
mah0809@gmail.com

LXH029803@YAHOO.COM.CN thank YOU

Hello
I'm joining the request for tutorial/introduction files for deforming mesh. If anyone can shed some light on this problem it will be a great help.
Thank you

Deforming mesh in FLUENT
 

Hi,
I have an oscillating fin in FLUENT. It keeps giving me a negative volume error.
1. In the computational setup, the fin is assigned the UDF for oscillation and I have set the default interior as a dynamic deforming mesh. Is this correct?

2. Remeshing and smoothing have been used, with a spring constant factor of 0.5 for the fin faces and the default interior. Apart from these, should any other faces be remeshed?

Thank you.

I had a similar solution. It was solved when I changed the smoothing scheme to "diffusion" (0.9).
you can also try using a smaller time step.

Thanks, but the problem was solved. I shud not have used default interior for deforming, rather its the domain name.
Thanks anyway. :)

Can you send me the pdf file too?
Thanks.
My email is kohvoonli@gmail.com

Hi all,

i,m working on dynamic mesh.


please send me the same file to me please!!!!

tmeysam92@yahoo.com

I don't think the file really exists. I found the UDF manual pretty helpful (I took the example they used for deforming mesh, and changed it according to my needs). good luck

For those of you looking for the pdf file for User Defined Functions here is the link...
http://www.hipecc.wichita.edu/pdfs/fludf.pdf