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-   -   importing & solving 2D model of pipe mesh in CFX 12.1(axisymmetric model) (http://www.cfd-online.com/Forums/cfx/90645-importing-solving-2d-model-pipe-mesh-cfx-12-1-axisymmetric-model.html)

m.salemi July 17, 2011 08:14

importing & solving 2D model of pipe mesh in CFX 12.1(axisymmetric model)
 
Hi,
I work in modeling turbulence 2phase flow in a pipe,can i use 2D model for my soloution???and how can i import 2D mesh with axisymmetric condition in cfx????

Abou ali July 17, 2011 09:08

Hi,
Take a look on CFX help: ANSYS CFX-Solver Modeling Guide | Advice on Flow Modeling | Modeling 2D Problems

And the related tutorials:
Tutorial 6: Buoyant Flow in a Partitioned Cavity
Tutorial 8: Supersonic Flow Over a Wing

ghorrocks July 17, 2011 19:41

http://www.cfd-online.com/Wiki/Ansys..._simulation.3F

m.salemi July 20, 2011 09:51

thanks a lot...

m.salemi July 23, 2011 16:26

How do I put the boundary condition of the centreline?

ghorrocks July 24, 2011 06:37

For 2D axisymmetric the geometry is a wedge with the point at the axis. There is no boundary condition at the centreline.

m.salemi July 24, 2011 07:32

thanks a lot ghorrocks for your reply...
but the geometry that i simulate is a pipe with 1m lenght and 0.01m diameter,and i mesh 2D a rectangular in XY plane with 1m lenght and 0.005m width with ANSYS MESH and i creat boundry name for top edge as wall and left edge as inlet and right edge as outlet.
when i import mesh in cfx and revolve 5 deg,some new boundry as periodic1 and wall surface_body was created that periodic1 shows the high and low theta surface and wall surface_body shows the centerline and i define boundry condition for inlet,outlet,wall and symmetry for high and low theta surface,so when i want to define run,i have some error as "the wall surface_body is not set in boundry condition"
do yo know the problem???

ghorrocks July 24, 2011 08:20

You have to generate the mesh as a 3D wedge to begin with. You started with a 2D rectangular region.


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