# help needed: cone-shape surface

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 July 29, 2000, 16:25 help needed: cone-shape surface #1 Y. Guo Guest   Posts: n/a Hello, there, I am new user of Star-CD. I want to generate a cone-shape surface(or patch) through Star-CD. What procedue should I follow? The equation of the surface in cylinder coordinate is z = a*r, theta belong to [0,2Pi], a is a constant. Thanks,

 July 31, 2000, 06:31 Re: help needed: cone-shape surface #2 Astrid Hostrup Guest   Posts: n/a Hi One suggestion could be that you use a loop to create vertices with the above formula, and connect them with a spline. It should then be easy to make the mesh with the block-command. I don't know if there is a more simple way to do it.

 July 31, 2000, 08:19 Re: help needed: cone-shape surface #3 steve Guest   Posts: n/a !Set yourself to the global cylindrical system CSYS,2 !Define 2 points at either end of the cone !(fill in r1,r2,z1,z2 with real coordinates) V,1,r1,0,z1 V,10,r2,0,z2 !fill the line VFIL,1,10 !sweep the line around in theta (every 10 degrees) VGEN,36,10,1,10,1,0,10.0 !plot them VSET ALL VIEW,1 VPLOT

 July 31, 2000, 11:37 How can I generate the mesh with the vertex? #4 Y. Guo Guest   Posts: n/a Thanks for your kindly help. I have generated the vertexes following your suggestions. How can I generate a patch(mesh) with these vertexes? I looked the patch command. There is a parameter 'ICSRF' which seems related to curved surface. However I do not know how to use it. Could you please help me again? Thanks.

 July 31, 2000, 17:56 Re: How can I generate the mesh with the vertex? #5 steve Guest   Posts: n/a !define a shell in the cell table CTAB,10,SHELL !define a cell and then sweep it 9 in first direction !and 36 times in 2 direction C,1,2,12,11 CGEN,9,1,1 CGEN,36,10,1,9 !finally merge the 2 overlapping ends VMERGE ALL

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