Radiator boundary condition
 

we are doing a supersonic flow on jet aircraft and use radiator to make a thermal expansion to show engine out but when i import the mesh in to fluent it is not reorganizing the radiator and it is changing to wall.

the error we have:
Building...
mesh
Warning: Inappropriate zone type (jump) for one-sided face zone 13.
Changing to wall.
materials,
interface,
domains,
zones,
sym
Pff
v-tail
wing
intaked
jet
Error: Cannot change radi to fan because
there is only one adjacent cell thread.
Error Object: #f

radi
int_fluid
fluid
Done.

My question is
why? I have this error and the reason.
what? I need to do to solve this error.

Can someone help me in this please.

A porous jump is a mesh surface that is connected to volume mesh on both sides. The surface in the mesh you are trying to import does not not have volume mesh on both sides.

Stu

problem on merging surfaces
 

Thank you Stuart.

I have one more problem now. after i change the block to surface i can not mesh it. i attached the picture.

i tried to mesh by part and it is saying there is a hold.

(http://www.cfd-online.com/Forums/ans...nt-repair.html)
i tried to do the edit mesh to close hole but it is not working in final mesh.

can i have the solution that i can use to make it work. I'm trying in different method but still now i did't get it done.

So is the porous jump that thin gap? If so, do you have curves around the perimeter on both sides? Your edges look rather sloppy. If you have curves and it is still messy like that, you would need to use a smaller mesh size to capture the gap or apply something like "Thin Cuts" between the closely spaced walls.

If the porous region is really the larger area to one side of that gap and the gap is just a badly fit geometry, then just delete the curve and surface that is not needed so the mesh can walk over it.

Thank you simon,

sorry for the confusion.
The above post i added two picture.. the first pic is to show the error i found and the second is the problem.

as you suggested i did editing the curves and surface. but it is not meshing on the radiator surface. I added the detail picture now. please i like to know the reason. why it is not meshing that part alone?

Are you using Octree? Set the interface as an internal wall

Oh, I see. I thought the purple surface was a patch on the outer surface of the duct...

Yes, if it is an interior wall and it has the same volume material on either side, OCTREE will assume it is just junk and remove the elements unless you flag it as an internal wall. (Mesh (tab) => Parameters by parts and check the box for internal wall on that part).

Stuart got it right.

Stuart in action. Stuart you doing good at LEAP. :D

Haha, how do you know where I work? You're not a spy are you!? :eek:

LinkedIn : You are in my connections

Of course!:D

solved
 

at last i have it is solved. really it is a very simple thing that i did't learn for a long time thanks for helping me Stuart and Simon.

I'll come with more question in the next meshes..

And Ahamed good to see you at last :D