CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CD-adapco

3D Mesh creation

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   May 30, 2002, 02:00
Default 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.
  Reply With Quote

Old   May 30, 2002, 14:35
Default 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.

  Reply With Quote

Old   June 2, 2002, 04:39
Default 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.....
  Reply With Quote

Old   June 12, 2002, 11:00
Default 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.

  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help needed for airfoil mesh creation using GAMBIT Alagesanj FLUENT 2 October 20, 2008 11:39
PSD creation hosseini CFX 2 February 23, 2008 08:25
Various types of Mesh creation Wooster CFX 0 October 18, 2007 15:53
Mesh Creation Nikos CD-adapco 5 February 1, 2007 20:43
Problem during creation of a new mesh generator klaus OpenFOAM Meshing & Mesh Conversion 8 July 18, 2005 05:25


All times are GMT -4. The time now is 11:26.