# 3D Mesh creation

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 May 30, 2002, 02:00 3D Mesh creation #1 ialu Guest   Posts: n/a Hello,I'm beginner user of Star-CD. I'm study critical nozzle in a pipeline. *Nozzle shape : axisymmetric converging-diverging nozzle has a converging section consisting of a circular arc that passes through the throat to a point of tangency at which the shape becomes conical. *I had to make a 3D model. *1) How make????? *2) How make cartesian coord. surface -> cylindrical coord. surface ? ex) User guide 3-6, Figure 3-10(a) surface. Please, detail. Thank you.

 May 30, 2002, 14:35 Re: 3D Mesh creation #2 James Guest   Posts: n/a Don't use Prostar for meshing. It's too time consuming. I would recommend to use ICEM Hexa/Tetra.

 June 2, 2002, 04:39 Re: 3D Mesh creation #3 ialu Guest   Posts: n/a Thank you. ================================================== =================== (p,T : absolute value.) 1) Boundary condition : *Stagnation(upstream) : velocity=abs, P=2e+05, T=294K, direction=normal *Pressure(exit) : open air(P=9922.8001) *Symmetry *Wall : Np-slip 2)Thermophysical..... *Molecular Properties -density = Ideal-f(T,P) *Turbulence off *Thermal off *Refference data : press=2e+05, temp.=294,Cell NUmber=1(inlet point) ================================================== ================== I think.... the nozzle is converging-diverging. so Ma=1(at throat). but, Ma=1 point --> divergent portion of the nozzle. What is the problem? Please, teach me. Thanks.....

 June 12, 2002, 11:00 Re: 3D Mesh creation #4 leung Guest   Posts: n/a Create the 2D mesh using Shell type. then VCEXTRUDE it into 3-D. refine the mesh in the third direction. You will get a 3-D mesh of Fluid type.

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