[jahetbe]

hi
i trying so solve the flow throught a pipe , but solver exited with error 255 and sometimes error 1 , please help me

[cdegroot]

Wow, a lot of people posting this week about error 255. As far as I know this comes up when the solver diverges. Make sure your problem is set up in a consistent way. Check boundary conditions to make sure they are reasonable. Look in the CFX manual for recommended BC configurations. Also see if lowering timescale helps.

[jahetbe]

time scale is 0.08s ( leng of pipe 16 m and v=0.484 m/s)
then error is Error code 1:

[cdegroot]

Timescale seems fine. What are the BCs? What is Reynolds number and are you using a turbulence model?

[jahetbe]

what is BC?
Re = 48400
yes i use a turbulence model

[cdegroot]

BC = boundary condition.

What is the Mach number?

[jahetbe]

i have a pipe with : i=0.005 v=0.484 m/s D=0.1m y= 0.7m
BC = input ,output , top (free surface) bot ( wall)

[cdegroot]

Sorry you are going to have to explain what i and y mean. Also for each of those boundary types there are options you have to specify. You should post them or your CCL file. My guess is something is inconsistent in the boundary conditions.

[jahetbe]

i= slope of pipe
y= height of water in pipe

[jahetbe]

How is the CClfile created??????

[cdegroot]

Interesting. This is a 2 phase flow then with air and water?

In CFX-pre you can save the CCL file via file -> export CCL.

[jahetbe]

YES This is a 2 phase flow then with air and water
when iwan create CCL file this error showed: no objecte wee selected to export

[cdegroot]

You might have to click on the flow analysis first.

[jahetbe]

that Error again show :No objected were selected to export ?? plz help me

[cdegroot]

That is very odd. Anyone else experienced this? Open up the CFX Pre user guide and search for export CCL to make sure you are doing it properly.

[jahetbe]

this is link of CCL
http://www.4shared.com/rar/kr4AmO8z/New_folder.html

[cdegroot]

Can you post another way (even just copy and paste) so I don't have to sign up for that site to download?

[jahetbe]

aaw.jpg
ccl

[k.vafiadis]

jahetbe this is not the ccl and from this screenshot nothing is clear.
export ccl and you got to select all the items of interest... inlet, outlet, etc. ccl is text.
Also post a picture of what you are studying, your geometry.
I am 99% sure it's not a CFX bug, but a set up problem. It's very useful to try the tutorials.

[ghorrocks]

Wow, a lot of people posting this week about error 255.

That's why we wrote the FAQs - this one is relevant: http://www.cfd-online.com/Wiki/Ansys...do_about_it.3F

The FAQ might need a bit of a tweak to make it clear that it applies to 255 errors as well.