[Salome] Creating a mesh for 2D flow in Salome.

stark96 · June 25, 2017, 07:08

Hi
I am trying to simulate 2D flow around a cylindrical hole. How am I supposed to create the mesh for 2D flow considering the fact that OpenFOAM only works with 3D geometries? I am confused as to how to proceed once I am done with creating the geometry in Salome. Or is there any other better meshing software that can deal with this 2D- 3D conversion?

piu58 · June 25, 2017, 13:00

This geometry is such simple that you best work with blockMesh.

stark96 · June 25, 2017, 13:23

Thanks for the reply.
I can use blockMesh for a square hole. But I guess it consumes too much time if the hole is a cylinder. I posted the picture to show that I have a 2D mesh right now and wish to take it to a 3D extruded figure so that it works with OpenFOAM.
Consider that I have a Cylindrical hole geometry and a similar type of mesh as shown in the figure above. How do I proceed?

piu58 · June 26, 2017, 00:35

> it consumes too much time if the hole is a cylinder.

There is an arc function which supports circles / cylinders. Without too much searching find mesh examples for flow past cylinders, which you may change to let it fit your demand.

If you don't find one I may post an example.

June 25, 2017, 13:00		#2
piu58 Senior Member Uwe Pilz Join Date: Feb 2017 Location: Leipzig, Germany Posts: 744 Rep Power: 15	This geometry is such simple that you best work with blockMesh. __________________ Uwe Pilz -- Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)

June 26, 2017, 00:35		#4
piu58 Senior Member Uwe Pilz Join Date: Feb 2017 Location: Leipzig, Germany Posts: 744 Rep Power: 15	> it consumes too much time if the hole is a cylinder. There is an arc function which supports circles / cylinders. Without too much searching find mesh examples for flow past cylinders, which you may change to let it fit your demand. If you don't find one I may post an example. hssnjfry likes this. __________________ Uwe Pilz -- Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)

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June 25, 2017, 13:23		#3
stark96 New Member Tarun Sathapathi Join Date: Jun 2017 Posts: 2 Rep Power: 0	Thanks for the reply. I can use blockMesh for a square hole. But I guess it consumes too much time if the hole is a cylinder. I posted the picture to show that I have a 2D mesh right now and wish to take it to a 3D extruded figure so that it works with OpenFOAM. Consider that I have a Cylindrical hole geometry and a similar type of mesh as shown in the figure above. How do I proceed?