CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent UDF and Scheme Programming

How do I set one side of a geometry to move/deform using a UDF but not the other?

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 15, 2023, 14:31
Default How do I set one side of a geometry to move/deform using a UDF but not the other?
  #1
New Member
 
Join Date: Mar 2023
Posts: 1
Rep Power: 0
mozaz is on a distinguished road
Hi,

I am trying to simulate the movement of the throat section of a scramjet engine. I have attached the geometry below.

I want to move just the throat i.e. L3 upwards, and along with it the L2 and L4 sections connected to it should move along with it accordingly. Here, they would basically rotate about the point to which they are connected to the geometry.

I have attached the mesh as well. I tried to move the throat using the DEFINE_CG_MOTION function and the throat moved to the position I wanted. But, two other sections either move along with it completely or they don't move at all. This creates weird little sections in my geometry that I do not desire, I have attached an example, you can see the two bars on each side that are unnecessary.

It would be great if I could get some insight on how to approach this issue.
Attached Images
File Type: jpg scraminlet.jpg (36.9 KB, 3 views)
File Type: jpg scramesh.jpg (21.7 KB, 2 views)
File Type: png throatmove.png (856 Bytes, 1 views)
mozaz is offline   Reply With Quote

Reply


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
Remeshing for Rotation in CFX via ICEMCFD gera CFX 3 September 23, 2017 13:29
Out File does not show Imbalance in % Mmaragann CFX 5 January 20, 2017 11:20
Can someone help me with a UDF for a simple rotatory geometry?? Maralady Fluent UDF and Scheme Programming 14 August 12, 2013 09:23
CFX Solver Memory Error mike CFX 1 March 19, 2008 08:22
UDF to set boundary conditions philip FLUENT 2 June 17, 2005 10:11


All times are GMT -4. The time now is 15:06.