[oozcan]

Hi all,

I have encountered a problem in inflation mesh.

I have calculated y+ and thickness have been defined by manual calculation.

But both ends of tubes and around tubes (external part domain) overlapping or gap have been occured in inflation mesh.

I have read some article to resolve it by Mapped Face but some messages always come true

1)Inflation created stairstep mesh at some locations.
2)The advanced size function failed to initialize the following topologies.
T3)he selective body meshing is not being recorded, so the meshing may not be persistent on an update. If you want to record the order of the body meshing, please use the Mesh Worksheet to track the meshing steps. Please see Selective Meshing documentation for more details.

last meshing I have created is attached in 3 photos

[hwet]

none of these are errors but actually warnings.

you can through cut sections actually see where there is stair stepping in the inflation, post that picture so others can see what the geometry is like there and why you are getting a stair stepped inflation there.

From the third warning i think you have several different bodies which you mesh one by one. so it just tells you that this pattern of meshing is not being recorded and next time you mesh, you will have to mesh one by one again. the other way is to record the meshing approach so the next time the solver will mesh in the same order in which you have recorded.

Also, your pictures don't help much. Maybe give more details.

[oozcan]

Originally Posted by hwet

none of these are errors but actually warnings.

you can through cut sections actually see where there is stair stepping in the inflation, post that picture so others can see what the geometry is like there and why you are getting a stair stepped inflation there.

From the third warning i think you have several different bodies which you mesh one by one. so it just tells you that this pattern of meshing is not being recorded and next time you mesh, you will have to mesh one by one again. the other way is to record the meshing approach so the next time the solver will mesh in the same order in which you have recorded.

Also, your pictures don't help much. Maybe give more details.

Hi hwet,

Thank you for all your help as usual,

I am going to share all my work in here the way to understand anoyone asap

because I need to complete all work in a short time and immediately after promptly need to write my master thesis.


Kind Regards,

[oozcan]

Hi hwet,

first photo shows air fluid domain and plenum chamber ( transition from a place to other place thanks to pressure differance)

Second photo shows that it is waste gas fluid domain

Third photo shows that 2 parts are assembled

In Desing Modeller I have actived share-top ( Imprints) because of having common faces like tube walls and other one is that top plenum chamber contacts bottom of waste gas fluid domain

Moreover as I have worked in 2 parts, similarly I have created ''Form New Part'' to have conformal mesh.

Forth photo shows that I have meshed as a whole rather than one by one

Fifth photo shows what Ihave meshing meshing type

Last photo is not allowed to put in here for limiting

[oozcan]

Originally Posted by oozcan

Hi hwet,

first photo shows air fluid domain and plenum chamber ( transition from a place to other place thanks to pressure differance)

Second photo shows that it is waste gas fluid domain

Third photo shows that 2 parts are assembled

In Desing Modeller I have actived share-top ( Imprints) because of having common faces like tube walls and other one is that top plenum chamber contacts bottom of waste gas fluid domain

Moreover as I have worked in 2 parts, similarly I have created ''Form New Part'' to have conformal mesh.

Forth photo shows that I have meshed as a whole rather than one by one

Fifth photo shows what Ihave meshing meshing type

Last photo is not allowed to put in here for limiting

Last photo is attached in thumbnail.

As you can see some gap and overllapping in here That's why I have a warining ''could not correct the face handedness face ... for .. '' when I try to couple wall tubes.

That's wht I have to back to mesh better.

Here this post is relevant to my topic : https://www.sharcnet.ca/Software/Ans...g_grid_nc_coup

[hwet]

are you sure the two are overlapping?
When you create a cut-section turn on the full cell view, i cant remember what it is called, the icon looks like a triangle and is above the window where you get the cut section names and can select and deselect them.

[Onurozcan]

Originally Posted by hwet

are you sure the two are overlapping?
When you create a cut-section turn on the full cell view, i cant remember what it is called, the icon looks like a triangle and is above the window where you get the cut section names and can select and deselect them.

Hwet hi,

Thanks for your help,

I have solved overlapping and gap question.But both surfaces can not be coupled (the aim is to have a wal otherwiese I have two wall in both surfaces) when I have tried in Mesh Interfaces in Fluent.

After Hybrid Initialization have been started,could not correct face handedness face for ... warning comes.

There is a problem in both surfaces.How can I resolve it?

fuse-face-zones or merge ones ? which one is compatible I dont know?

Kind Regards,

[hwet]

I am not sure, it will be better if you post this question in the correct forum if the meshing problem has been resolved

[oozcan]

Originally Posted by hwet

I am not sure, it will be better if you post this question in the correct forum if the meshing problem has been resolved

That problem is solved by mapped face meshing and edge sizing ( number of divisions 90 on both wall surfaces

But this time when I have clicked hybrid initialization a warning have appeared

like convergence tolerance of 1.0000 e-6 not reached.I don't want to change default settings.What else solution do I need ?

Kind Regards,