[snappyHexMesh] Creating multiple unconnected solid elements with snappyHexMesh

Goddi · April 20, 2019, 13:09

Hello,

I want to do a FSI of multiple unconnected cylinders in 2D. Already managed to do it with one cylinder by using sHM.

The next step would be to implement multiple unconnected cylinders with snappyHexMesh. Creating the fluid Mesh was no problem (grey mesh).

But creating more than one solid element with one .stl file (containing the cylinders) proved to be tricky. As you can see in the picture sHM only generated the cylinder where locationinmesh was set (blue mesh).

At researching the problem I didn´t find any solution. So before using blockMesh to create these solid elements I reach out to you guys

Does anyone know a method to implement unconnected objects with snappyHexMesh by using one or more .stl files?
snappyfail.png

Goddi · May 12, 2019, 10:12

special thanks to Philip and his proposal in another thread.

So for everyone facing the same problem in the future. A good source of information is page 14/30 in this pdf.
By using mergeMeshes I was able to create this mesh:

April 20, 2019, 13:09	Creating multiple unconnected solid elements with snappyHexMesh	#1
Goddi New Member Join Date: Oct 2018 Location: Germany Posts: 5 Rep Power: 8	Hello, I want to do a FSI of multiple unconnected cylinders in 2D. Already managed to do it with one cylinder by using sHM. The next step would be to implement multiple unconnected cylinders with snappyHexMesh. Creating the fluid Mesh was no problem (grey mesh). But creating more than one solid element with one .stl file (containing the cylinders) proved to be tricky. As you can see in the picture sHM only generated the cylinder where locationinmesh was set (blue mesh). At researching the problem I didn´t find any solution. So before using blockMesh to create these solid elements I reach out to you guys Does anyone know a method to implement unconnected objects with snappyHexMesh by using one or more .stl files? snappyfail.png Last edited by Goddi; April 20, 2019 at 15:24.

May 12, 2019, 10:12	solved :)	#2
Goddi New Member Join Date: Oct 2018 Location: Germany Posts: 5 Rep Power: 8	special thanks to Philip and his proposal in another thread. So for everyone facing the same problem in the future. A good source of information is page 14/30 in this pdf. By using mergeMeshes I was able to create this mesh: Last edited by Goddi; May 12, 2019 at 10:19. Reason: make it better ;)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
how to set periodic boundary conditions	Ganesh	FLUENT	15	November 18, 2020 07:09
[snappyHexMesh] creating baffles using snappyHexMesh (for given random shaped surfaces)	ashish.svm	OpenFOAM Meshing & Mesh Conversion	1	January 17, 2018 02:24
[snappyHexMesh] snappyHexMesh on a multiple region blockMesh	blais.bruno	OpenFOAM Meshing & Mesh Conversion	1	February 17, 2015 06:40
multiple .stl in snappyHexMesh	jki	OpenFOAM Pre-Processing	1	August 2, 2014 14:07
CFX4.3 -build analysis form	Chie Min	CFX	5	July 13, 2001 00:19