Troubleshooting with simple GE90 engine model (Isolated Volumes)

wiggles8x0 · May 30, 2016, 18:15

Currently making a simple model of the GE90 engine and here is a picture of all the parts of the engine
engine.png

The entire engine is put in an enclosure btw.

So when I try and run the solution, I get the error that I have 3 isolated bodies. I have tried to figure out what those bodies are using the results but have absolutely no idea where the problem is occurring, partially because I am not fully able to understand how to look for isolated bodies. Here are two pictures I took of a plane bisecting the enclosure:
isolatedvolume.png isolatedvolume2.png

I have triple checked in the setup that I have defined an interface for every interacting face that requires one. The shaft, separator and engine frame are solids while the bypass and core flows are fluids.

Any ideas where the problem might be located? I can provide further pictures if anyone wants them!

ghorrocks · May 30, 2016, 22:23

You almost certainly have a problem in your interfaces. Give them a very close look.

wiggles8x0 · June 1, 2016, 15:06

Remade the entire model along with new mesh, boundary conditions and interfaces, still getting the same error message haha

Do you know how to read the graph? What does red/green represent? Couldn't find anything in the user manual about it

ghorrocks · June 1, 2016, 21:04

It has labelled the isolated volumes 1, 2 and 3. So they will be red, green and blue. This is so you can see what the problem is.

Studi · June 2, 2016, 05:45

I would guess your wall bc(s) contains faces connecting the fluid domains to each other.

May 30, 2016, 18:15	Troubleshooting with simple GE90 engine model (Isolated Volumes)	#1
wiggles8x0 New Member Yoshi Toshi Join Date: Mar 2016 Posts: 29 Rep Power: 10	Currently making a simple model of the GE90 engine and here is a picture of all the parts of the engine engine.png The entire engine is put in an enclosure btw. So when I try and run the solution, I get the error that I have 3 isolated bodies. I have tried to figure out what those bodies are using the results but have absolutely no idea where the problem is occurring, partially because I am not fully able to understand how to look for isolated bodies. Here are two pictures I took of a plane bisecting the enclosure: isolatedvolume.png isolatedvolume2.png I have triple checked in the setup that I have defined an interface for every interacting face that requires one. The shaft, separator and engine frame are solids while the bypass and core flows are fluids. Any ideas where the problem might be located? I can provide further pictures if anyone wants them!

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May 30, 2016, 22:23		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	You almost certainly have a problem in your interfaces. Give them a very close look.

June 1, 2016, 21:04		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	It has labelled the isolated volumes 1, 2 and 3. So they will be red, green and blue. This is so you can see what the problem is.

June 2, 2016, 05:45		#5
Studi New Member Join Date: Sep 2012 Location: Germany Posts: 25 Rep Power: 14	I would guess your wall bc(s) contains faces connecting the fluid domains to each other.