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Old   September 13, 2007, 08:03
Default external flow mesh
  #1
bob
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I'm studying fan flow motion using StarCD.

How to make a mesh for external flow motion after import CAD/grid data of fan?

furthermore, because fan rotatas, would like to know that how to use moving or rotating or sliding effect of mesh.

I'm waiting for your answers.
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Old   September 19, 2007, 01:20
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ding
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I can't help u in creating rotating or dynamic mesh. But volume meshing for normal external flow analysis around a body requires a box or any other kind of flow domain created around the body. then only u can create the external meshing. and thr is noway to do tht in the STAR-CD. u need to create the flow domain (e.g. box) using sm other preprocessor tool(e.g. Gambit) b4 importing the IGES file to pro-surf for repair and triangulation. then u can import the .DBS file to Pro-Am for volume mesh generation.

hope it 'll help.
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Old   September 20, 2007, 05:11
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dong
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You can generate the box in Pro-Am as well. See the manual for more information.
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Old   September 21, 2007, 04:10
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ding
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ya, u r rite. thr is a feature "ceate box for external flow analysis" in the Pro-am, but it never works the way it shd. I tried to create the box arnd a geometry and then the external volume mesh, but i always ended with the internal mesh. another thing i dint knw, how to associate the box with the geometry.

so i cdn't do it using tht feature. if sm1 succeed then plz let me knw.

bol
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Old   September 25, 2007, 02:46
Default Re: external flow mesh
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ding
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finally i tried doing it again, and i succeded. U create the box arnd the geometry 'just after importing the .dbs file of the geometry in PRO-AM'. After creating the box , u need to generate feature lines & edges and after it generate the subsurface for ceating volume mesh arnd the body.

so it worked.
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Old   November 23, 2007, 14:26
Default Re: external flow mesh
  #6
hossein
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hi i want import my file from ansys to fluent but b4 importing i should meshed it i know that i should mesh around of my body,actually the external flow should be meshed around of the body but i dont know how can i meshed its surrunding and then importing to the fluent would u please help me?
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