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

[ANSYS Meshing] Mesh Matching at interface between two parts

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 12, 2017, 12:07
Default Mesh Matching at interface between two parts
  #1
New Member
 
Bharath N
Join Date: Mar 2016
Posts: 3
Rep Power: 2
bharath n is on a distinguished road
Hi,

I'm constructing mesh in ANSYS 15.0, I have to mesh the two parts (see attachments), I want to simulate pitching and plunging motion for that i want Fluid region surrounding the plate to move with the plate. When I mesh the meshes at interface between two parts are not matching i.e., the nodes aren't connecting. I have tried to merge the two parts by creating a new part but having single part i can't move the other part( motion of fluid region)
If i go with the old not connected mesh I'm getting divergence error. Is there any way I can fix this Issue?
Please help me with this
Thank you

[ATTACH]sluid19.PNG[/ATTACH]MESH.PNG
Attached Images
File Type: png Fluid18.PNG (7.0 KB, 5 views)
bharath n is offline   Reply With Quote

Old   March 13, 2017, 08:48
Default
  #2
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 694
Rep Power: 15
vasava will become famous soon enough
There are two ways to impose matching
  1. Match control: In the mesh settings you can introduce match control and select both the faces where you want matching mesh.
  2. Shared topology: In the CAD program you can introduce shared topology for both the bodies. With shared topology ansys mesh will mesh both the bodies as if they were one.

    I use spaceclaim and it is straight forward in spaceclaim. But I am not sure about design modeler.

Try and let us know how it goes.
vasava is offline   Reply With Quote

Old   March 13, 2017, 14:11
Default
  #3
New Member
 
Bharath N
Join Date: Mar 2016
Posts: 3
Rep Power: 2
bharath n is on a distinguished road
Thank you @ vasava
Shared Topology works
But I got wrong results. I wanted flow to happen over flapping plate but I can see contours over interfaces also (see attachment)new.jpg
bharath n is offline   Reply With Quote

Old   March 14, 2017, 02:51
Default
  #4
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 694
Rep Power: 15
vasava will become famous soon enough
Without seeing your case setup its difficult to pass comment about why this is happening. But here is what I think:
1. You could be too early in your simulation time to make observations. I mean for such a system I would wait for at least 10-15 rotations before I see any periodic behavior.
2. The interface is not set correctly.
3. The rotation (axis, center etc) is not set correctly.
vasava is offline   Reply With Quote

Old   March 15, 2017, 06:35
Default
  #5
New Member
 
Bharath N
Join Date: Mar 2016
Posts: 3
Rep Power: 2
bharath n is on a distinguished road
Thank you Sir for your suggestions.
My case file isn't uploading here.. can you give me your email id so that I can mail you

Problems are
1. I can see contours over interface zone
2. dynamic mesh failed negative cell volume detected error

I think my geometry and meshing might be wrong
Can you guide me with Geometry and mesh generation
Please help me with this sir, I have no one to guide me.
Thank you
bharath n 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
Gambit problems Althea FLUENT 22 January 4, 2017 04:19
An error has occurred in cfx5solve: volo87 CFX 5 June 14, 2013 17:44
2D Mesh Generation Tutorial for GMSH aeroslacker Open Source Meshers: Gmsh, Netgen, CGNS, ... 12 January 19, 2012 04:52
Dynamic Mesh moving interface help akash.iitb FLUENT 0 August 23, 2010 23:53
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55


All times are GMT -4. The time now is 08:38.