Geometry translation

wei · April 23, 2009, 07:43

I want to rotate and translate a geometry to a new location. How do I do that?

vishyaroon · April 23, 2009, 10:14

If you are using STAR CD use the vgen command. For translation you can use this directly. The syntax of this command (explained through an example is):

cset all
vset news cset
vgen,2,0,vset,,,dx,dy,dz (replace dx, dy and dz accordingly)

The above example is for translating. You'd have the Cartesian co-ordinate system on in such a case.
If you want to rotate the geometry activate the cylindrical co-ordinate system and then use the vgen command to rotate.

vishyaroon · April 23, 2009, 10:16

Sorry forgot to mention that if you are using STAR CCM+, it is straight forward. Right click on the region and you'd see the transform option. This has rotate, scale, translate options.

wei · April 23, 2009, 11:38

It is working well. Thank you. I am using starcd 3.26.

If I want to add a new mesh using current surface model on top of the top layer of a previous mesh, what can I do?

A_Lyaskin · April 27, 2009, 12:30

You can create a surface mesh (shells) at the top and then extrude it (see help for VCEXTRUDE command)

wei · April 28, 2009, 05:50

what commands are normally used to create a surface mesh (shell) from vertices?

thank you.

A_Lyaskin · April 28, 2009, 07:59

If you already have a 3D mesh, you can use CFIN command with SHELL option (from GUI: Tools->Cell Tool->Add Shells->Surface (New edge Vertex Set)...)

April 23, 2009, 07:43	Geometry translation	#1
wei New Member wei Join Date: Apr 2009 Posts: 17 Rep Power: 17	I want to rotate and translate a geometry to a new location. How do I do that?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Importing CAD geometry and Editing edges to match	Ahmed	CFX	15	March 21, 2016 13:39
[snappyHexMesh] SnappyHexMesh meshes inside and outside of an STL geometry	villier	OpenFOAM Meshing & Mesh Conversion	17	June 15, 2010 20:51
urgent help! car geometry	Arjun	FLUENT	0	August 13, 2007 14:07
vitual _ real	deneb	FLUENT	3	January 22, 2007 05:31
Input Geometry from Ideas to Gambit	Knick	FLUENT	2	December 11, 2002 04:59

April 23, 2009, 10:14		#2
vishyaroon Senior Member Aroon Join Date: Apr 2009 Location: Racine WI Posts: 148 Rep Power: 17	If you are using STAR CD use the vgen command. For translation you can use this directly. The syntax of this command (explained through an example is): cset all vset news cset vgen,2,0,vset,,,dx,dy,dz (replace dx, dy and dz accordingly) The above example is for translating. You'd have the Cartesian co-ordinate system on in such a case. If you want to rotate the geometry activate the cylindrical co-ordinate system and then use the vgen command to rotate.

April 23, 2009, 10:16		#3
vishyaroon Senior Member Aroon Join Date: Apr 2009 Location: Racine WI Posts: 148 Rep Power: 17	Sorry forgot to mention that if you are using STAR CCM+, it is straight forward. Right click on the region and you'd see the transform option. This has rotate, scale, translate options.

April 23, 2009, 11:38		#4
wei New Member wei Join Date: Apr 2009 Posts: 17 Rep Power: 17	It is working well. Thank you. I am using starcd 3.26. If I want to add a new mesh using current surface model on top of the top layer of a previous mesh, what can I do?

April 27, 2009, 12:30		#5
A_Lyaskin Member Anton Lyaskin Join Date: Mar 2009 Location: Samara, Russia Posts: 66 Rep Power: 17	You can create a surface mesh (shells) at the top and then extrude it (see help for VCEXTRUDE command)

April 28, 2009, 05:50		#6
wei New Member wei Join Date: Apr 2009 Posts: 17 Rep Power: 17	what commands are normally used to create a surface mesh (shell) from vertices? thank you.

April 28, 2009, 07:59		#7
A_Lyaskin Member Anton Lyaskin Join Date: Mar 2009 Location: Samara, Russia Posts: 66 Rep Power: 17	If you already have a 3D mesh, you can use CFIN command with SHELL option (from GUI: Tools->Cell Tool->Add Shells->Surface (New edge Vertex Set)...)