CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > SU2

Dynamic Mesh Capabilities

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 26, 2020, 07:32
Default Dynamic Mesh Capabilities
  #1
New Member
 
Avijeet
Join Date: Nov 2012
Posts: 14
Rep Power: 10
averis007 is on a distinguished road
I've gone through most of the test cases available for dynamic mesh in SU2. I'm not able to understand from those examples whether SU2 has dynamic remeshing capabilities. Ofcourse there are examples of rotating bodies, where some part of the existing mesh is rotating. But is it possible to execute a simulation where, let's say, a wing is moving through air (instead of air moving over the wing), with a steady translation rate, which means the wall will move forward in the mesh, requiring dynamic remeshing to create/fill up holes.


Any help will be greatly appreciated.
averis007 is offline   Reply With Quote

Old   November 26, 2020, 12:21
Default
  #2
pcg
Senior Member
 
Pedro Gomes
Join Date: Dec 2017
Posts: 345
Rep Power: 8
pcg is on a distinguished road
There is no dynamic remeshing in SU2.
Also there are no overset meshes.
There is steady state translation or rotation of entire domains, and mesh deformation for when some boundaries move but not others. Both are covered in the examples in the TestCases folders.
pcg is offline   Reply With Quote

Old   November 27, 2020, 02:32
Default
  #3
New Member
 
Avijeet
Join Date: Nov 2012
Posts: 14
Rep Power: 10
averis007 is on a distinguished road
Thanks pcg for clarifying. Just had one more question, if let's say I gave moving wall condition to my wing surface, with the speed set to whatever mach number want to carry out the study at, and the wall is set to a no-slip wall in a RANS solver, will that work properly?
averis007 is offline   Reply With Quote

Old   November 28, 2020, 11:14
Default
  #4
pcg
Senior Member
 
Pedro Gomes
Join Date: Dec 2017
Posts: 345
Rep Power: 8
pcg is on a distinguished road
It depends what you consider work properly, would the solver converge? maybe. Would it be physical? Probably not.

If you want to simulate steady state flow around a moving thing, you need some kind of infinitely repeating motion.
For example the lid-driven cavity problem where one of the surfaces is given a velocity, you can imagine that surface is one side of a belt going past again and again.
Another example is a cylinder spining around its axis, no matter at what point in time you look at the cylinder, you see the same thing, i.e. the same surface velocities and the cylinder in the same place.
pcg is offline   Reply With Quote

Old   December 1, 2020, 07:17
Default
  #5
New Member
 
Avijeet
Join Date: Nov 2012
Posts: 14
Rep Power: 10
averis007 is on a distinguished road
You're right. I wanted to know if the case thus defined would solve for the correct physics problem. Now I understand that I need to approach it differently. Thanks for taking the time out to answer with examples.
averis007 is offline   Reply With Quote

Reply

Tags
dynamic mesh;, grid movement;, remeshing

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
sliding mesh problem in CFX Saima CFX 46 September 11, 2021 07:38
Ship resistance shows wiggles when using Overset mesh and dynamic mesh in Fluent Qingsong FLUENT 1 February 4, 2020 14:48
[ICEM] Dynamic mesh setup with ICEM David121284 ANSYS Meshing & Geometry 0 April 11, 2014 04:19
Dynamic Mesh "Shadow Wall" thezack FLUENT 0 June 4, 2013 22:09
dynamic mesh for drop interface IndrajitW FLUENT 0 March 30, 2013 08:03


All times are GMT -4. The time now is 05:39.