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[skdubey]

Hi Friends, 

I am doing meshing with the outlet flow but my mesh is extermely fine, I also need the mesh to be conformal. I am not able to control the meshing for the square region, If I provide any division my whole mesh is getting distorted even, If I save the workbench and come back, I need to do re-mesh. I have been stuck for week on this. 

I tried all the different geometry decompositon and all and all they results in the similar issue as above. any suggestion will be really helpful. My body is fluid domain.

 

[Keyur Kanade]

Plesae provide more information. Is this 2D or 3D? What kind of mesh you need? How many bodies are there? Please provide some more images with explaination. 

Please check following videos

Ansys Meshing Sizing:
https://www.youtube.com/watch?v=w4q6q8nKF3U

DM Share topology:
https://www.youtube.com/watch?v=IO4ZtwZdD2I

SpaceClaim Share topology:
https://www.youtube.com/watch?v=h43E1YO1LiM

Ansys Meshing: Decomposition for hex meshing:
https://www.youtube.com/watch?v=P19GOTQWmc0

Ansys Meshing: Meshing Methods:
https://www.youtube.com/watch?v=nEOC8rDnnRo

Ansys Meshing: Inflation:
https://www.youtube.com/watch?v=lrEHXizrhC0

Please go through help manual for more details 

Regards,

Keyur

How to access Ansys Online Help Document

Guidelines on the Student Community

Fluids Engineering Courses | Ansys Innovation Courses

 

[skdubey]

 

@keyur

Its multi-body. and 3D fluid domain. Cross section is around 0.1mm and very thin. Center one is the flow outlet and one trapezodial is the inlet. The inlet and outlet both have extended leg downward on the opposite side. I am looking to create the radial mesh from the center but since that can cause singularity issue, I created the square type in order to over come. But when I start meshing, its difficult since I am not able to control the divison of the square one , whenever I do the entire meshing get distorted and I am looking to create conformal mesh, In the non-confromal meshing I use to get the good results but across the cross section, the flux doesnt match, and I tried to use the interface such as coupled wall but it started giving error, since there are large number of bodies involved. We are looking for 10 to 20 element at the cross sectional as well. The other problem is that with 4.4M nodes, it was easy to run with the laminar model in 20min but for Turbulent model, it started taking almost not working. 

 

 

[Keyur Kanade]

For meshing query you need to give more images of the geometry and issue. 

In general what I understand it you want to change edge meshing of central square. 

You can do that using edge sizing and you can also use biasing. 

Please check following videos

Ansys Meshing Sizing:
https://www.youtube.com/watch?v=w4q6q8nKF3U

Please go through help manual for more details 

Regards,

Keyur

How to access Ansys Online Help Document

Guidelines on the Student Community

Fluids Engineering Courses | Ansys Innovation Courses

 

[skdubey]

Hmmm, I have enlcosed the spaceclaimfile, I hope it helps.

Link: https://drive.google.com/drive/folders/1qLGPd6XwefQAzzH9uucceGaJxBaYXk3N?usp=share_link

[Keyur Kanade]

As Ansys Staff, we can not download attachments. Please upload images using upload image functionality. 

You can use some sketches to define the issue. 

[skdubey]

 

Hi Keyur,

Bottom side

 

Top Side:

 

 

[Keyur Kanade]

So as I understand after tha middle square, the mesh is having jump. Please use edge biasing in meshing. Please go through help manual for more details Regards, Keyur How to access Ansys Online Help Document Guidelines on the Student Community Fluids Engineering Courses | Ansys Innovation Courses

[skdubey]

@keyur any suggestion

[skdubey]

@keyur, I did that there are two ways, how can I do

1st Way: I start meshing from the outer and then go inward, I use the 3 type of compenent meshing, Sweep meshing, edge meshing and for thickness I use again the edge meshing. (like I need 10 elements). and I mesh the trapz Inlet as well in the same way, and move towards the interior. The time When I reach at the segemented inner circle, I start to lose the control of meshing any changes here can cause the distrotation in the whole mesh. 

2nd way: I did was doing from inside but the mesh at the trapz inlet become not so good and distorted as well. Really lead me bit frustrated its just simple geometry. 

 

[Keyur Kanade]

Please start from inside and then go out. Please change biasing factor and number of elements to get smoth transition.