Placing "LID" in the model

[solid34works]

Hi,
I am trying to simulate simple pipe flow using solidworks and Flow works. In solid work I model one pipe by simple extrusion process. When I open this model in the floworks a cubical volume is considered for the computational domain. I do not want to consider the outside of the pipe.
How could I get rid of the pipe thickness and outside of the pipe from my computational domain?
I am new in this area. I would appreciate any kind of help.

Thanks,
Robin.

 

[CorBlimeyLimey]

If you don't get a suitable answer here, try forum1183

 

[StefanHamminga]

Close the pipe on each end, use 'internal flow' (study wizard) and select both closing faces as your inlet/outlet boundary. Model your 'lids' to represent reality, eg. for an 'open air' entrance model a sphere on the open end. For a continuous pipe model a flat face.

The box for computational domain should be as small as possible (FW sets this automagically). The shape is for practical reasons I guess (mathematically practical that is).

Stefan Hamminga
EngIT Solutions
CSWP/Mechanical designer
Searching Eng-Tips forums

 

[solid34works]

Thank you Stefan. I have one question. How can I model 'lids'? Is there any option in floworks? or do I have to do it in Solidworks?
This 'lid' concept is totally confusing.

Thanks for your help.
Robin.

 

[StefanHamminga]

You use the inner faces of the lids for the boundary conditions (inlet & exit). For example the left lid would have a pressure of 1 bar and the right lid would have a volume flow.

Stefan Hamminga
EngIT Solutions
CSWP/Mechanical designer
Searching Eng-Tips forums