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

BLADEGEN-TURBO GRID BASIC QUESTION

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 3, 2007, 14:31
Default BLADEGEN-TURBO GRID BASIC QUESTION
  #1
Dip
Guest
 
Posts: n/a
My problem is to model the rotor-stator interaction of a centrifugal compressor. I AM NOVICE TO BLADEGEN AND TURBOGRID.

I have two options.

Option A Either to import already created impeller and diffuser in solidworks into Turbo-Grid. Or,

Option B Create impeller and diffuser in BladeGen

USING OPTION A

1. If I just import the solid parts into TurboGrid, in format do i import it ? 2. Is it exactly the solid parts that I import or I have to solid model the fluid domain (as solid)? Meaning, do I have to solid model the fluid flow volume between the blades to represent the fluid domain with hub,shroud, inlet and outlet walls ? while the blade is like the empty space?

3. In that case, I believe I have to join the rotor and stator fluid domain in solidworks and bring them into TurboGrid ! ....Is this how it is done?

USING OPTION B

4. If I create rotor and stator in BladeGen separately, do I join them in BladeGen or join the meshes in TurboGrid ? How is this done ?

I have gone through the tutorials of CFX stating the analysis for rotor-stator interaction. But cannot find answer to my above questions.

Please help.

Thank you, Dip

  Reply With Quote

Old   May 4, 2007, 06:37
Default Re: BLADEGEN-TURBO GRID BASIC QUESTION
  #2
Albi
Guest
 
Posts: n/a
Create the rotor and the stator mesh separately. After that you should import the two meshes in CFX, where you can set the interface between the outlet of the stator and the inlet of the rotor. The interface is a fluid-fluid interface, use the frozen rotor or stage algorithm.

Let me know.

Bye.

Albi
  Reply With Quote

Old   May 5, 2007, 07:04
Default Re: BLADEGEN-TURBO GRID BASIC QUESTION
  #3
Johnny
Guest
 
Posts: n/a
Option B is easier. Mesh each separately in TurboGrid, and import the two meshes into Pre. See tutorial 12 in CFX help doc.
  Reply With Quote

Old   May 5, 2007, 10:06
Default Re: BLADEGEN-TURBO GRID BASIC QUESTION
  #4
deLuther
Guest
 
Posts: n/a
I did not see any significant problem of using aproach A. To translate geometry to TurboGrid you can use Data import wizard in BladeGen and then (or parallel) export to TurboGrid. For that aproach you should use IGES file for each part (impeller and diffuser). And there is possible ways to use only geometry of parts instead of creating flow regions. Wizard lets you use any space curve or segment because it can be transformed into meridional profile. Just read BladeGen documentation (Data import wizard).
  Reply With Quote

Old   May 7, 2007, 06:19
Default Re: BLADEGEN-TURBO GRID BASIC QUESTION
  #5
Johnny
Guest
 
Posts: n/a
I suppose the import wizard isn't too bad when only exporting to a TurboGrid file. However, importing an IGES file will import every single curve in the IGES file. It is very cumbersome to figure out what is what in my opinion. So I'd try to defeature as much as possible in Solidworks before writing the IGES file if you do go this route.
  Reply With Quote

Old   May 7, 2007, 11:00
Default Re: BLADEGEN-TURBO GRID BASIC QUESTION
  #6
Dip
Guest
 
Posts: n/a
THANK YOU ALL FOR YOUR SINCERE SUGGESTIONS !

I would try and reply back soon.

Thank you,

Dip
  Reply With Quote

Old   May 8, 2007, 06:04
Default Re: BLADEGEN-TURBO GRID BASIC QUESTION
  #7
deLuther
Guest
 
Posts: n/a
Import wizard lets you choose curves for construction of meridional and blade profile. But, yes, it can be cumbersome so strip your model as possible
  Reply With Quote

Old   August 16, 2010, 02:42
Default
  #8
New Member
 
N.Re.
Join Date: Aug 2010
Posts: 9
Rep Power: 6
annie is on a distinguished road
I have two problem in working with BladeGen:
1-At first when I click new, a dialog box opens and I can specify the shape of the blade. But I want to have NACA 651510 as the airfoil of rotor blade.How can I specify that?
Is it possible to import x-y data of the airfoil in Bladegen?How?

2-The other problem is that I want to model a tandem rotor for an axial compressor in bladeGen.How can I do this?There is only a choice for splitter blade,but I don't want to put the second airfoil between them.I want to put the second airfoil with an axial distance about -10% span and 80%span percent pitch of first airfoil.Is it possible?
annie is offline   Reply With Quote

Old   March 8, 2013, 03:05
Default
  #9
New Member
 
Anonymous
Join Date: Mar 2013
Posts: 4
Rep Power: 4
chico1952 is on a distinguished road
Annie did you ever have any success with your NACA profile
chico1952 is offline   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
[GAMBIT] Basic Question - Mesh Quality SheffieldStudent ANSYS Meshing & Geometry 8 December 15, 2010 18:24
basic question about the pressure AirS OpenFOAM Post-Processing 5 July 29, 2010 12:07
Beginner's Question - cannot see grid in ParaView fishlurch OpenFOAM 3 January 7, 2010 10:49
grid spacing question clifford bradford Main CFD Forum 5 November 10, 1999 19:40
A question about elliptic grid generation A.Rajani Kumar Main CFD Forum 3 March 12, 1999 10:33


All times are GMT -4. The time now is 05:19.