# [ANSYS Meshing] stirred tank meshing

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April 15, 2013, 06:00
stirred tank meshing
#1
Senior Member

Jamal Foroozesh
Join Date: Oct 2012
Location: Iran
Posts: 141
Rep Power: 7
Hi all
I cant mesh my geometry(stirred tank by MRF or SM), because I dont know how should start mesh process.
I dont know how prepare geometry to meshing.

Attached Images
 3.JPG (30.8 KB, 106 views) 4.JPG (13.3 KB, 65 views)

 April 15, 2013, 09:59 #2 Senior Member   Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 19 Is that your entire geometry? If so, you do not need MRF's

April 15, 2013, 10:19
#3
Senior Member

Jamal Foroozesh
Join Date: Oct 2012
Location: Iran
Posts: 141
Rep Power: 7
Quote:
 Originally Posted by stuart23 Is that your entire geometry? If so, you do not need MRF's
yes, it is.
Why not need to mrf?

 April 15, 2013, 10:26 #4 Senior Member   Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 19 If the tank is cylindrical and shares the same axis as the rotor, why not just have a SRF with counter rotating walls? There is no need for MRFs in this case.

April 15, 2013, 10:36
#5
Senior Member

Jamal Foroozesh
Join Date: Oct 2012
Location: Iran
Posts: 141
Rep Power: 7
Quote:
 Originally Posted by stuart23 If the tank is cylindrical and shares the same axis as the rotor, why not just have a SRF with counter rotating walls? There is no need for MRFs in this case.
ok, but how do I?
I have not previously experienced srf. Also, I think my main problem is meshing.

Thank you so much

 April 15, 2013, 11:02 #6 Senior Member   Jamal Foroozesh Join Date: Oct 2012 Location: Iran Posts: 141 Rep Power: 7 I think that I cant use SRf because: "Many problems involve multiple moving parts or contain stationary surfaces which are not surfaces of revolution (and therefore cannot be used with the Single Reference Frame modeling approach)" I used mrf and results were satisfactory(by another geometry for impeller). please help me about meshing this geometry

 April 15, 2013, 19:47 #7 Senior Member   Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 19 Looking at your geometry, every other surface except the mixer is a surface of revolution. Read Fluent User Guide 9.2.2.1.1, it is exactly the same as your case. jamalf64 likes this.

April 16, 2013, 05:17
#8
Senior Member

Jamal Foroozesh
Join Date: Oct 2012
Location: Iran
Posts: 141
Rep Power: 7
Quote:
 Originally Posted by stuart23 Looking at your geometry, every other surface except the mixer is a surface of revolution. Read Fluent User Guide 9.2.2.1.1, it is exactly the same as your case.
Ok, But I think my main problem is meshing. can you help me?
My mesh quality very bad because I use auto mesh.

 April 18, 2013, 03:45 teaser #9 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,358 Blog Entries: 6 Rep Power: 45 Like this?

 April 18, 2013, 04:09 #10 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,358 Blog Entries: 6 Rep Power: 45 Your case is much simpler than this one. So you can easily mesh it with full Hexa

April 18, 2013, 04:26
#11
Senior Member

Jamal Foroozesh
Join Date: Oct 2012
Location: Iran
Posts: 141
Rep Power: 7
Quote:
 Originally Posted by Far Your case is much simpler than this one. So you can easily mesh it with full Hexa
Dear Far
But I cant mesh that, because I dont know how should start mesh process.
can you help me?

 April 18, 2013, 04:28 #12 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,358 Blog Entries: 6 Rep Power: 45 Do you have complete geometry of your model? did you make it any CAD software or ANSYS? Can you share it?

April 18, 2013, 04:37
#13
Senior Member

Jamal Foroozesh
Join Date: Oct 2012
Location: Iran
Posts: 141
Rep Power: 7
Quote:
 Originally Posted by Far Do you have complete geometry of your model? did you make it any CAD software or ANSYS? Can you share it?
yes I have complet geometry. I built that using GAMBIT.

 April 18, 2013, 04:39 #14 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,358 Blog Entries: 6 Rep Power: 45 email is there with my name on left side

 April 18, 2013, 06:52 #15 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,358 Blog Entries: 6 Rep Power: 45 Ok. got files and imported to ICEM. I hope I will come up with high quality mesh in ICEM jamalf64 likes this.

 April 19, 2013, 17:13 #16 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,358 Blog Entries: 6 Rep Power: 45 Two blades are still remaining. Other two are blocked with o-grid. https://dl.dropboxusercontent.com/u/...tank_Jamal.zip ghost82 and jamalf64 like this.

April 20, 2013, 16:00
#17
Senior Member

Jamal Foroozesh
Join Date: Oct 2012
Location: Iran
Posts: 141
Rep Power: 7
Quote:
 Originally Posted by Far Two blades are still remaining. Other two are blocked with o-grid. https://dl.dropboxusercontent.com/u/...tank_Jamal.zip
I waiting to that

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