[GAMBIT] Cylinder with slots meshing

-mAx- · December 14, 2011, 02:31

No, you only have to define your rotor domain (surface in 2d) as rigid body in the moving mesh panel.
But in Gambit you have to set 2 kinds of fluid domain: one for stator, and one for rotor, else you cannot pick the rotor domain.
So you need in gambit to define as BC:
-your inlet
-your outlet
-your 2 interfaces
-your 2 fluid domains

in Fluent:
-define the interfaces by picking the 2 edges (already defines in gambit)
-in moving mesh panel, just define the rotor domain as rigid body and give the right angular velocity

Maybe you need to create the surface from your fluid zone, check here: http://my.fit.edu/itresources/manual...876.htm#156597

kaushik180587 · December 18, 2011, 22:28

Please can u show me in the pic I attatched earlier,the explaination u gave above ..also i couldnt set rigid body when i was setting the bc for rotor..

-mAx- · December 19, 2011, 01:20

use this tool for defining your 2 fluid domains:
http://my.fit.edu/itresources/manual...zone_cont_type
Sans titre.jpg

k_k · December 19, 2011, 06:34

The easiest and safest way to setup the Sliding Mesh simulation is to setup a MRF simulation first and begin the sliding mesh simulation after few iterations. Define the rotating volume as the MRF domain and specify the rotational velocity and axis. After few iterations, on the Text User Interface activate Grid>Modify zones>MRF-to-sliding mesh. This should identify neccesary interface and prepare the sliding mesh boundary conditions.

srini8156 · December 21, 2011, 20:38

Even I tried doing this example..max/kk I wanted to ask if the rotor domain is given angular velocity..then how do you get the effect on actual rotor surface which is slotted,pls clarify... also can this animated?

Far · January 13, 2012, 14:31

This topic is still on?

December 14, 2011, 02:31		#21
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	No, you only have to define your rotor domain (surface in 2d) as rigid body in the moving mesh panel. But in Gambit you have to set 2 kinds of fluid domain: one for stator, and one for rotor, else you cannot pick the rotor domain. So you need in gambit to define as BC: -your inlet -your outlet -your 2 interfaces -your 2 fluid domains in Fluent: -define the interfaces by picking the 2 edges (already defines in gambit) -in moving mesh panel, just define the rotor domain as rigid body and give the right angular velocity Maybe you need to create the surface from your fluid zone, check here: http://my.fit.edu/itresources/manual...876.htm#156597 __________________ In memory of my friend Hervé: CFD engineer & freerider

December 19, 2011, 01:20		#23
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	use this tool for defining your 2 fluid domains: http://my.fit.edu/itresources/manual...zone_cont_type Sans titre.jpg __________________ In memory of my friend Hervé: CFD engineer & freerider

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December 18, 2011, 22:28		#22
kaushik180587 New Member Kaushik Join Date: Dec 2011 Posts: 16 Rep Power: 14	Please can u show me in the pic I attatched earlier,the explaination u gave above ..also i couldnt set rigid body when i was setting the bc for rotor..

December 19, 2011, 06:34		#24
k_k Member Kailash Join Date: May 2011 Location: London, UK Posts: 45 Rep Power: 14	The easiest and safest way to setup the Sliding Mesh simulation is to setup a MRF simulation first and begin the sliding mesh simulation after few iterations. Define the rotating volume as the MRF domain and specify the rotational velocity and axis. After few iterations, on the Text User Interface activate Grid>Modify zones>MRF-to-sliding mesh. This should identify neccesary interface and prepare the sliding mesh boundary conditions.

December 21, 2011, 20:38		#25
srini8156 New Member kk Join Date: Dec 2011 Posts: 5 Rep Power: 14	Even I tried doing this example..max/kk I wanted to ask if the rotor domain is given angular velocity..then how do you get the effect on actual rotor surface which is slotted,pls clarify... also can this animated?

January 13, 2012, 14:31		#26
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	This topic is still on?