[ANSYS Meshing] stirred tank meshing

jamalf64 · April 15, 2013, 07:00

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.
please help me.

Thanks in advance

stuart23 · April 15, 2013, 10:59

Is that your entire geometry? If so, you do not need MRF's

jamalf64 · April 15, 2013, 11:19

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?

stuart23 · April 15, 2013, 11:26

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.

jamalf64 · April 15, 2013, 11:36

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.
please help me

Thank you so much

jamalf64 · April 15, 2013, 12:02

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

stuart23 · April 15, 2013, 20:47

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 · April 16, 2013, 06:17

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.

Thanks in advance

Far · April 18, 2013, 04:45

Like this?

Far · April 18, 2013, 05:09

Your case is much simpler than this one. So you can easily mesh it with full Hexa

jamalf64 · April 18, 2013, 05:26

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?

Far · April 18, 2013, 05:28

Do you have complete geometry of your model? did you make it any CAD software or ANSYS? Can you share it?

jamalf64 · April 18, 2013, 05:37

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.
If possible, please send to me your email.

Far · April 18, 2013, 05:39

email is there with my name on left side

Far · April 18, 2013, 07:52

Ok. got files and imported to ICEM. I hope I will come up with high quality mesh in ICEM

Far · April 19, 2013, 18:13

Two blades are still remaining. Other two are blocked with o-grid.

https://dl.dropboxusercontent.com/u/...tank_Jamal.zip

jamalf64 · April 20, 2013, 17:00

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

Thanks in advance Far
I waiting to that

Best Regards

April 15, 2013, 20:47		#7
stuart23 Senior Member Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 26	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 18, 2013, 04:45	teaser	#9
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	Like this?

April 18, 2013, 07:52		#15
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	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, 18:13		#16
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	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.

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April 15, 2013, 10:59		#2
stuart23 Senior Member Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 26	Is that your entire geometry? If so, you do not need MRF's

April 15, 2013, 11:26		#4
stuart23 Senior Member Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 26	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, 12:02		#6
jamalf64 Senior Member Jamal Foroozesh Join Date: Oct 2012 Location: Iran Posts: 162 Rep Power: 14	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 18, 2013, 05:09		#10
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	Your case is much simpler than this one. So you can easily mesh it with full Hexa

April 18, 2013, 05:28		#12
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	Do you have complete geometry of your model? did you make it any CAD software or ANSYS? Can you share it?

April 18, 2013, 05:39		#14
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	email is there with my name on left side