[pakk]

Good.
The interfaces make it possible for flow to go from one interior to the other. You want flow to go from one interface to the other, so keep them.

You say you want a wall in the drum. Good news: you probably already have it! One of the cell zones that is a wall should do the job!

So, it looks like everything is set like you want. Why are you changing things?

[Alfinmp]

Originally Posted by pakk

Good.
The interfaces make it possible for flow to go from one interior to the other. You want flow to go from one interface to the other, so keep them.

You say you want a wall in the drum. Good news: you probably already have it! One of the cell zones that is a wall should do the job!

So, it looks like everything is set like you want. Why are you changing things?

But i dont have a wall for the drum sir? Should i name it first?

[pakk]

What makes you say you don't have a wall?

What happened to the boundary of the drum? By default that should be a wall, and you confirmed that your case has walls. So you have a wall!

[Alfinmp]

Originally Posted by pakk

What makes you say you don't have a wall?

What happened to the boundary of the drum? By default that should be a wall, and you confirmed that your case has walls. So you have a wall!

I have 2 walls which are the pipe and the housing, the drum inside set itself as contacts region(interface) sir.

[pakk]

Is the volume of the drum included in Fluent? Is it meshed?
If so, did you make the cell zone solid?

[Alfinmp]

Originally Posted by pakk

Is the volume of the drum included in Fluent? Is it meshed?
If so, did you make the cell zone solid?

Yes it is included and meshed. Nope i set it as fluid too. Cause i want it as drum with 2 mm thickness in boundary.

[pakk]

? That makes no sense...

You want it to have a thickness of 2mm. So something solid. Then make it solid!

What does 2 mm have to do with making it fluid? It physically is solid, make it solid!

If you want a solid of 2mm, make it 2mm in your geometry!



I don't know how to respond better, I can not follow your logic.

[Alfinmp]

Originally Posted by pakk

? That makes no sense...

You want it to have a thickness of 2mm. So something solid. Then make it solid!

What does 2 mm have to do with making it fluid? It physically is solid, make it solid!

If you want a solid of 2mm, make it 2mm in your geometry!



I don't know how to respond better, I can not follow your logic.

Whats the difference between making the thickness in the boundary condition and the design modeler?
I am sorry sir pak, if its lead us to a confusion.

[pakk]

Originally Posted by Alfinmp

Whats the difference between making the thickness in the boundary condition and the design modeler?
I am sorry sir pak, if its lead us to a confusion.

There is a difference, but you are doing not one of these two!

1: don't mesh the drum interior, but only mesh the boundary faces; set the thickness of the shell elements at 2mm. For fluent, this is just a fluid boundary condition.
2: mesh the 2mm solid, and put solid elements there. There will be a solid-fluid boundary, I think in Fluent it's called wall-shadow wall.

Both options work fine. Results are not identical, but close enough, if the 2mm is small enough relatively.
But you did something else:
3. Mesh the complete drum, make it liquid, but then make the interface a wall so that the liquid is not connected anymore to the rest.

I don't know why you did that, and I've tried many times to tell you that you should not do that. If the drum is not liquid, don't model it as liquid! It seems very logical to me.

[Alfinmp]

Originally Posted by pakk

There is a difference, but you are doing not one of these two!

1: don't mesh the drum interior, but only mesh the boundary faces; set the thickness of the shell elements at 2mm. For fluent, this is just a fluid boundary condition.
2: mesh the 2mm solid, and put solid elements there. There will be a solid-fluid boundary, I think in Fluent it's called wall-shadow wall.

Both options work fine. Results are not identical, but close enough, if the 2mm is small enough relatively.
But you did something else:
3. Mesh the complete drum, make it liquid, but then make the interface a wall so that the liquid is not connected anymore to the rest.

I don't know why you did that, and I've tried many times to tell you that you should not do that. If the drum is not liquid, don't model it as liquid! It seems very logical to me.

Its getting clearer now, thank you sir for your information. I owe you that much. I appreaciated with the infromation you have been giving to me. It means a lot. Thank you.