one face turn to be two in pre

sjtusyc · May 16, 2013, 05:04

I am simulating the flow field of a large room. There are several pipes in the room. Air flows from the large room to the outer environment through pipes.

I try to start with an easy model.
First i model the room and then i direct model one pipe in the room through UG.

When meshing, I creat two material bodies, one for the pipe, and the other for the big room.

And i named the the inlet face of the pipe which connects the big room as IN.

But when i load the mesh in the CFX-pre, I found the CFX named the IN as
IN-a,IN-b.

Why will that happen?
Is it OK?

oj.bulmer · May 16, 2013, 05:36

This is probably because the IN surface is shared by two domains (materials) here - pipe and room. Hence a and b sides belong to the two domains meeting at your surface.

As long as both are same materials, ie air, you should be fine.

OJ

May 16, 2013, 05:04	one face turn to be two in pre	#1
sjtusyc Member leo Join Date: Jun 2012 Posts: 98 Rep Power: 14	I am simulating the flow field of a large room. There are several pipes in the room. Air flows from the large room to the outer environment through pipes. I try to start with an easy model. First i model the room and then i direct model one pipe in the room through UG. When meshing, I creat two material bodies, one for the pipe, and the other for the big room. And i named the the inlet face of the pipe which connects the big room as IN. But when i load the mesh in the CFX-pre, I found the CFX named the IN as IN-a,IN-b. Why will that happen? Is it OK?

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May 16, 2013, 05:36		#2
oj.bulmer Senior Member OJ Join Date: Apr 2012 Location: United Kindom Posts: 473 Rep Power: 20	This is probably because the IN surface is shared by two domains (materials) here - pipe and room. Hence a and b sides belong to the two domains meeting at your surface. As long as both are same materials, ie air, you should be fine. OJ