[Onurozcan]

Hi,

I am working on 3d heat excanger that is cross-flow,recuperator as master thesis.This project is consist of tubes(flow through air) and waste air ( outer region).Accordingly y+ and boundry layer thickness are to be used.

The problem I have run across is in Mesh.

Surface below body that have both tubes and waste gas flow domain contact top plane of plenum.I would like to have same mesh in two surface.ButI couldn't inflate on top plenum surface to have same mesh.

Could anyone know that is it possible to match same mesh? or is there any way out this problem?

Thing I have done in inflation is that top surface has been chosen in geometry selection and in case of boundary has been chosen only all tubes diameter edges on top plenum surface.

Thanks in advance.

[DarylMusashi]

Maybe you may post some pictures to clearify the problem? Why do you mean both surfaces need to have the same mesh?

[Onurozcan]

Originally Posted by DarylMusashi

Maybe you may post some pictures to clearify the problem? Why do you mean both surfaces need to have the same mesh?

Hi, thank you for replying in advance.

Attacted 3 photos.


First image that you see is cross section of recuperator(air flowing in tubes moves down to plenum.)

Second photo is in top surface of recuperator and mesh type is to be seen.I want to make same mesh on top surface of plenum ( you''ll see photo 3 that is awfully different)

By the way plenum is other body of part that has been assembled in CAD programme Plenum top surface and adjacent surface are interface alson i would like to make them same mesh.But inflation failed when i mesh on top surface plenum.(photo 3)

Is it possible to merge only surface in a body with the other named selection or face?

Is it possible to make mesh copy? ( surface or name selection)

http://imageshack.com/a/img905/4577/OEm87C.png

http://imageshack.com/a/img911/4632/oyWh5b.png

http://imageshack.com/a/img910/8733/pvkGxF.png

Kind Regards

[DarylMusashi]

Which meshing software do you use (I guess ANSYS)? Maybe you may post your problem in one of the related sub-forums, possibly there is a way to solve your problem directly by modifying the settings.

Moreover you can try to change the geometry of your bodys. Please have a look at my sketch. If a part of the tube is assembled to the recuperator-body you should be able to create a hybrid boundary-layer resolving mesh on both sides of your interface.

[Onurozcan]

Originally Posted by DarylMusashi

Which meshing software do you use (I guess ANSYS)? Maybe you may post your problem in one of the related sub-forums, possibly there is a way to solve your problem directly by modifying the settings.

Moreover you can try to change the geometry of your bodys. Please have a look at my sketch. If a part of the tube is assembled to the recuperator-body you should be able to create a hybrid boundary-layer resolving mesh on both sides of your interface.

Hi, thank you for replying and helping

Yes I am using ANSYS 12.0

As far as I know (you have mentioned )what means splitting tube(s) is to be make inflation mesh volume instead of being surface(2d).Even if a body of multiple body is adjacent to surface of body .This couldn't have same mesh and couldn't make inflation 2d. That's why need to change geometry

Ok
Kind Regards,