CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

unable to connect meshes across two rotating domains

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

LinkBack Thread Tools Search this Thread Display Modes
Old   March 28, 2018, 17:32
Unhappy unable to connect meshes across two rotating domains
New Member
srihari menon
Join Date: Feb 2015
Posts: 1
Rep Power: 0
srihari is on a distinguished road

I'm working on a simple CFD transient 2D turbine simulation. Inlet speed of ~10 m/s where the domain is of size 50 m. The intent is to animate the spin of the turbine. This would require User Defined Functions and dynamic meshing.


I tried breaking up the fluid domain into two parts, one region near the turbine and the second being rest of the domain, so that i could enable dynamic meshing. The idea would be to have the turbine domain rotate as a rigid body while the other domain continuously deforms and remeshes. This would mean defining a contact region between the outer and turbine domains when meshing. (Something like what's being described in this tutorial:


I am not being able to make a proper mesh connection.

I'll elaborate what I did. I made the geometry on DesignModeler: I sketched the surrounding, then using 'create surface from sketch' concept, created the 2D surface. I then switched it from 'add material' to 'add frozen'. That finished my surrounding. Then I made a new plane (coplanar with the original plane) and sketched the turbine on this new plane, and repeated the whole process. In the end, I had two bodies and two parts (merging the two parts into one part isn't helping me). In meshing, I deleted all other automatically generated connections, and selected the edges. I realized something may not be right when the 'advanced' section didn't come up in "bonded" details. It said it made the connection, but the simulations never work because the inner mesh moves independent of the outer domain, suggesting the meshes may never have been connected. I think I've made a mistake in geometry design (either that or I'm not meshing correctly).

The complete file(.wbpj and other files) is here:

Kindly suggest solutions!
srihari is offline   Reply With Quote


deforming mesh, mesh connection, mesh interface, turbine

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fluent Parallelization Problem After AC Power Dropped pawl Hardware 5 November 13, 2016 07:08
Car external aerodynamic with wheel spinning issue hokhay FloEFD, FloWorks & FloTHERM 2 August 18, 2016 05:23
[ANSYS Meshing] Icem cfd - applying different meshes to different domains Vitaly ANSYS Meshing & Geometry 3 February 4, 2012 17:54
Moving Meshes or Rotating Refrence frame is suitable for Rotating Blades? arash_7444 FLUENT 3 March 21, 2011 02:07
Particle tracking in unsteady rotating meshes? BP Siemens 3 October 14, 2003 08:44

All times are GMT -4. The time now is 23:38.