How to remove the part of geometry in STL file

eddykendo · June 23, 2014, 02:20

Hi! Foamers

I have STL file in which a rotor and a fuselage are separated each other.
At this moment, I just want to simulate the flow fields around the fuselage, not rotor.
For this, I'd like to remove the rotor geometry in STL file.
How to remove the rotor using commands concerning STL file in OpenFOAM?
I will appreciate it if anybody can let me know how to do that.

Thanks

nimasam · June 29, 2014, 04:24

well, i dont know how complicated your geometry is

but you can limit your blockMesh box to fuselage, then it would cut automatically

jhoepken · June 29, 2014, 04:42

You can do it in paraview as well. Open the STL, clip at the desired position, apply the "Triangulate" filter and save as STL. This has to be repeated, for the inverted normal vector of the clipping plane.

Jens

eddykendo · June 30, 2014, 03:59

Quote:

Originally Posted by nimasam

well, i dont know how complicated your geometry is

but you can limit your blockMesh box to fuselage, then it would cut automatically

Hi

Thank you for your reply.
I have fixed a problem using "Clip"
Your suggestion could be the one to fix it, but when the distance between two parts is too close, it might be very difficult to remove one of them only by using blockMesh.

Thanks

eddykendo · June 30, 2014, 04:05

Hi Jens

Thank you for your reply.
As you mentioned, I have removed blades leaving a fuselage as itself using "clip" in paraview.
It was quite helpful for me.
Thanks

jhoepken · June 30, 2014, 11:19

Quote:

Originally Posted by eddykendo

Hi Jens

Thank you for your reply.
As you mentioned, I have removed blades leaving a fuselage as itself using "clip" in paraview.
It was quite helpful for me.
Thanks

Thanks, I'm glad that I could help.

June 23, 2014, 02:20	How to remove the part of geometry in STL file	#1
eddykendo Member DongHo Join Date: Jul 2013 Posts: 51 Rep Power: 13	Hi! Foamers I have STL file in which a rotor and a fuselage are separated each other. At this moment, I just want to simulate the flow fields around the fuselage, not rotor. For this, I'd like to remove the rotor geometry in STL file. How to remove the rotor using commands concerning STL file in OpenFOAM? I will appreciate it if anybody can let me know how to do that. Thanks

June 29, 2014, 04:24		#2
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,267 Blog Entries: 1 Rep Power: 25	well, i dont know how complicated your geometry is but you can limit your blockMesh box to fuselage, then it would cut automatically __________________ My Personal Website (http://nimasamkhaniani.ir/) Telegram channel (https://t.me/cfd_foam)

June 29, 2014, 04:42		#3
jhoepken Senior Member Jens Höpken Join Date: Apr 2009 Location: Duisburg, Germany Posts: 159 Rep Power: 17	You can do it in paraview as well. Open the STL, clip at the desired position, apply the "Triangulate" filter and save as STL. This has to be repeated, for the inverted normal vector of the clipping plane. Jens nimasam likes this.

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June 30, 2014, 04:05		#5
eddykendo Member DongHo Join Date: Jul 2013 Posts: 51 Rep Power: 13	Hi Jens Thank you for your reply. As you mentioned, I have removed blades leaving a fuselage as itself using "clip" in paraview. It was quite helpful for me. Thanks