CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CCM+

[Need some advise] Am I doing right?? Simulating a rotational mixer

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 18, 2013, 11:36
Default [Need some advise] Am I doing right?? Simulating a rotational mixer
  #1
New Member
 
Suta Setasena
Join Date: Jan 2013
Posts: 7
Rep Power: 13
setasena is on a distinguished road
Hello everybody,
I really need your advice..I should actually simulate a rotating mixer, and hoping that i dont make some mistakes before I continue to the next step.

can some of you please give me advise, wheather I have done everything right? And what kind of steps should I basicaly continue?

This is what I have done so far (Please see the attachement I have made):

1. creating the mixer using CATIA V5, and saving as stp data.

2. creating a cylindrical rotational body.

3. creating a cylindrical "bowl".

4. Duplicate the cylindrical rotational body.
So there will be 4 body: Body 1: mixer
Body 2: cylindrical rotational Body
Body 3: cylindrical "bowl"
Body 4: duplication of body 2

5. Subtract "Body 1" and "Body 2", with "Body 2"as "Target Body"

6. Subtract "Body 3" and "Body 4", with "Body 3"as "Target Body"

7. "Body 2" and "Body3" Imprint

8. Rename "Body 2" with "Rotation", and "Body 3" with "Fluid"

9. Split by Patch and creating Interfaces

10. Assign Parts to Regions.

Did I do everything right?
can some of you give me advise what should I do next? doing the meshing?
Attached Images
File Type: jpg New.jpg (15.1 KB, 41 views)
setasena is offline   Reply With Quote

Old   February 20, 2013, 14:07
Default
  #2
Senior Member
 
Join Date: Dec 2010
Posts: 135
Rep Power: 15
eRzBeNgEl is on a distinguished road
Quote:
8. Rename "Body 2" with "Rotation", and "Body 3" with "Fluid"
At the end you should have two bodys like you described. I would say Rotational and Stationary. So your model seems to be right. Can you please upload a scene with your interfaces (Higher resolution please) ? - just an meshing advice, be careful with near wall interfaces.
eRzBeNgEl is offline   Reply With Quote

Old   February 21, 2013, 05:21
Default
  #3
New Member
 
Suta Setasena
Join Date: Jan 2013
Posts: 7
Rep Power: 13
setasena is on a distinguished road
Hi! thank you for your advise.
I will try to upload it later. maybe in the next hour.
but before I go further, I would like to ask weather it is really necessary to have two bodies just like you said, rotational and stationary.
I mean, is it much more easiear for us to just have one body? why should we make two bodies?
setasena is offline   Reply With Quote

Old   February 27, 2013, 11:51
Default
  #4
Member
 
Melih Meriç
Join Date: Apr 2011
Posts: 46
Rep Power: 14
mmntmflx is on a distinguished road
If you will use Moving Reference Frame (MRF) approach, you must use a discrete "rotational" region and again must use a "stationary" region thats the region why the naming strategy.

Certain amount fluid around the mixer rotates with propeller and this regions call rotating region.

You can think like a fan or pump design. This names "rotationary" and "stationary" word is like routine names of regions for MRF applications.

But if you will use Rigid Body Motion, then this is not the general or common naming rule or smt..
mmntmflx is offline   Reply With Quote

Old   March 10, 2013, 11:32
Default
  #5
New Member
 
Suta Setasena
Join Date: Jan 2013
Posts: 7
Rep Power: 13
setasena is on a distinguished road
Now, I am writing about "step by step" of simulation the Fluid structure Interaction of my mixer/ Agigator in my report.

I have attached a picture that maybe will show what should i write in my report. Hope for some advise of course.
Thank you so much..
Attached Images
File Type: jpg Picture2.jpg (36.9 KB, 18 views)
setasena is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[GAMBIT] Meshing and Simulating Rotational Flow Fernando.Arya ANSYS Meshing & Geometry 0 April 19, 2009 13:37
Simulating a static mixer in Fluent Novice FLUENT 1 January 26, 2009 14:09


All times are GMT -4. The time now is 19:07.