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

Droplet detachment from moving surface

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 2, 2023, 16:54
Default Droplet detachment from moving surface
  #1
New Member
 
Pensylvania
Join Date: Sep 2021
Posts: 2
Rep Power: 0
khayrulbuet13 is on a distinguished road
I have to run a case where the droplet will detach from a moving surface/stage that follows a cosine profile. I designed a model where I defined the moving stage with a hollow in a rectangular 2d domain. I defined a UDF for controlling the stage. But my problem is the model becomes extremely computationally expensive which becomes unstable with time_step > 10^-7. The mesh size also needs to be very small ~2M mesh.

My settings:
The droplet size is: 1.66 mm with a half circle hanging from top hollow moving stage. [which is not shown in the image]




My questing is there any better way to do this? any other approach that can converge with a higher timestep of a larger mesh size?
Attached Images
File Type: jpg Slide2.JPG (155.4 KB, 5 views)
khayrulbuet13 is offline   Reply With Quote

Reply

Tags
droplet, fluent, vof method

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
Droplet impact on a solid surface mwithoutm1901 Main CFD Forum 2 June 25, 2016 22:17
body force for moving a droplet s.amirzadeh CFX 3 February 28, 2015 06:40
droplet model using surface tension boesendorfer FLOW-3D 1 May 22, 2014 06:21
how to make moving surface(flutter surface) ? bluAero FLUENT 2 November 18, 2012 14:01
[ICEM] Automatic mesh generation script surface intersection problem stuart23 ANSYS Meshing & Geometry 0 May 13, 2011 01:10


All times are GMT -4. The time now is 17:50.