How to position an object (STL) in the domain?

klausb · January 23, 2011, 13:54

Hello,

how is an object (STL format) positioned in the domain?

It's a symmetical 3D case and the object should be positioned at 50% of the domain hight, 20% of the domain length and start at the symmetrie face.

Klaus

elvis · January 24, 2011, 04:00

Hi,

are you talking about position a STL object that will be used for SnappyHexMesh?
you can change either the position via your blockmesh(dict). you can visulize you blockmesh http://openfoamwiki.net/index.php/Co...ayBlockMesh.py

if you want to position your STL you write a short VTK programm (maybe paraview can help you as well) to rotate/translate your object.

Maybe discretizer might help you as well http://www.discretizer.org/

jhoepken · January 24, 2011, 08:15

As an alternative, you could try to use admesh to translate, rotate and scale the STL file. I've used it for the same purpose, but it messed up my STL file. Now I am using python + VTK for that purpose.

aerothermal · January 24, 2011, 13:03

Hi,

Usually I do the translation or rotation in enGrid software.
It is really nice because you can visualize the result immediately.

Regards,

aerothermal

January 23, 2011, 13:54	How to position an object (STL) in the domain?	#1
klausb Senior Member Klaus Join Date: Mar 2009 Posts: 250 Rep Power: 22	Hello, how is an object (STL format) positioned in the domain? It's a symmetical 3D case and the object should be positioned at 50% of the domain hight, 20% of the domain length and start at the symmetrie face. Klaus

January 24, 2011, 08:15		#3
jhoepken Senior Member Jens Höpken Join Date: Apr 2009 Location: Duisburg, Germany Posts: 159 Rep Power: 17	As an alternative, you could try to use admesh to translate, rotate and scale the STL file. I've used it for the same purpose, but it messed up my STL file. Now I am using python + VTK for that purpose. lhcamilo likes this.

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January 24, 2011, 04:00		#2
elvis Senior Member Elvis Join Date: Mar 2009 Location: Sindelfingen, Germany Posts: 620 Blog Entries: 6 Rep Power: 24	Hi, are you talking about position a STL object that will be used for SnappyHexMesh? you can change either the position via your blockmesh(dict). you can visulize you blockmesh http://openfoamwiki.net/index.php/Co...ayBlockMesh.py if you want to position your STL you write a short VTK programm (maybe paraview can help you as well) to rotate/translate your object. Maybe discretizer might help you as well http://www.discretizer.org/

January 24, 2011, 13:03		#4
aerothermal Senior Member Guilherme da Silva Join Date: Aug 2010 Location: Sao Paulo - Brazil Posts: 118 Rep Power: 15	Hi, Usually I do the translation or rotation in enGrid software. It is really nice because you can visualize the result immediately. Regards, aerothermal