CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

[GAMBIT] Ask about how to set up geometry and mesh for moving mesh case

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

Like Tree1Likes

Reply
 
LinkBack Thread Tools Display Modes
Old   December 20, 2011, 04:08
Default
  #21
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,972
Rep Power: 30
-mAx- will become famous soon enough
yes enable the dynamic mesh, else you cannot access to dynamic mesh zone.
But don't change anything, since your mesh will not be updated (no layering, no smoothing and no remeshing)
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   December 20, 2011, 04:13
Default
  #22
Member
 
noken
Join Date: Nov 2011
Posts: 32
Rep Power: 5
g-wagon is on a distinguished road
thanks boss, really appreciate it. btw come visit my country indonesia
g-wagon is offline   Reply With Quote

Old   December 21, 2011, 04:10
Default
  #23
Member
 
noken
Join Date: Nov 2011
Posts: 32
Rep Power: 5
g-wagon is on a distinguished road
hi max i have problem again..
i have two interface in my geometry in fluent i tried to connect them using coupled but the contour of velocity was so weird check this out


that is contour for initial solution..the wall is not rotating..but whay the fluid didnt pass the valve??
g-wagon is offline   Reply With Quote

Old   December 21, 2011, 04:13
Default
  #24
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,972
Rep Power: 30
-mAx- will become famous soon enough
yes you have problem at interfaces
Check if they are well defined.
I am in vacation untill January the 4th.
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   December 21, 2011, 04:19
Default
  #25
Member
 
noken
Join Date: Nov 2011
Posts: 32
Rep Power: 5
g-wagon is on a distinguished road
but why??i think it had been defined well.. i have two surface not connected, i give that surface interface rotor and stator after that i use FLUENT to defined the interface type as coupled...
g-wagon is offline   Reply With Quote

Old   December 21, 2011, 04:24
Default
  #26
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,972
Rep Power: 30
-mAx- will become famous soon enough
no you need to define the edges as interface.
Between rotor and stator, only edges are common
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   December 21, 2011, 04:26
Default
  #27
Member
 
noken
Join Date: Nov 2011
Posts: 32
Rep Power: 5
g-wagon is on a distinguished road
sorry i was wrong..i mean the edge of both stator and rotor
g-wagon is offline   Reply With Quote

Old   December 21, 2011, 04:28
Default
  #28
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,972
Rep Power: 30
-mAx- will become famous soon enough
no you mean one interface for the stator edges, and another interface for the rotor edges.
In Fluent select both interfaces to define the grid interfaces
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   December 21, 2011, 04:30
Default
  #29
Member
 
noken
Join Date: Nov 2011
Posts: 32
Rep Power: 5
g-wagon is on a distinguished road
i've done that, and for the interface type i use coupled type
g-wagon is offline   Reply With Quote

Old   January 2, 2012, 22:13
Default
  #30
Member
 
noken
Join Date: Nov 2011
Posts: 32
Rep Power: 5
g-wagon is on a distinguished road
hi max..me again hope you not bored with me
i'm facing a problem..yes again...
in my dynamic analysis using moving mesh, i'm facing the negative cell problem.. can you analysis what was wrong in my simulation, why did this comes up, here is what error like to be

g-wagon is offline   Reply With Quote

Old   January 4, 2012, 02:47
Default
  #31
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,972
Rep Power: 30
-mAx- will become famous soon enough
something is wrong since you are not suppose to change your mesh.
Check where are the negative cells
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   February 3, 2012, 07:33
Default
  #32
New Member
 
Efthymios Efthymiou
Join Date: Nov 2011
Posts: 16
Rep Power: 5
ftimis is on a distinguished road
Hi my friend, I am currently working on a similar project. I have to design a check valve. Is that working for you? Shall I follow the steps of your discussion??
ftimis is offline   Reply With Quote

Old   September 8, 2012, 11:26
Default
  #33
Member
 
Satish Gupta
Join Date: Jun 2012
Posts: 30
Rep Power: 5
Rahul123 is on a distinguished road
I am also plannin on using Sliding mesh to rotate a square Cylinder 2D....can ny1 help in defining interfaces.....I am not able to understand how we have two interfaces from d same circle...Do I have 2 make two circles nd define dem as interfaces
Rahul123 is offline   Reply With Quote

Old   September 10, 2012, 00:55
Default
  #34
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,972
Rep Power: 30
-mAx- will become famous soon enough
imagine a surface with a hole (disk) > you are agree that in this surface you have a circle.
imagine now a disk not located on the surface mentionned earlier, but anywhere > you are agree that a circle (edge) is attached to this disk
You have then 2 circles.
Now move your disk in such way, that it will cover the hollow from first surface.
Finally you have defined a stator (first surface), and the rotor (disk) which are disconnected. And you also have 2 superposed interfaces (one belongs to stator surface and the other belongs to the rotort (disk)) Here the interfaces are the circles (edges)
I Hope I was clear
Marion likes this.
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   September 10, 2012, 08:01
Default
  #35
Member
 
Satish Gupta
Join Date: Jun 2012
Posts: 30
Rep Power: 5
Rahul123 is on a distinguished road
thanks max....How do I couple the two interfaces
1.coupled
2.periodic
or
3.periodic wall boundary.
I found these 3 options in fluent
Rahul123 is offline   Reply With Quote

Old   September 10, 2012, 08:03
Default
  #36
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,972
Rep Power: 30
-mAx- will become famous soon enough
don't remember anymore, but coupled should be ok
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- 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
3D Hybrid Mesh Errors DarrenC ANSYS Meshing & Geometry 11 August 5, 2013 06:42
2D Mesh Generation Tutorial for GMSH aeroslacker Open Source Meshers: Gmsh, Netgen, CGNS, ... 12 January 19, 2012 04:52
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
Icemcfd 11: Loss of mesh from surface mesh option? Joe CFX 2 March 26, 2007 18:10
Gambit problems Althea FLUENT 21 February 6, 2001 08:05


All times are GMT -4. The time now is 16:55.