CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Droplet spreading on two fibers and Fluent VOF

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 18, 2013, 16:24
Default Droplet spreading on two fibers and Fluent VOF
  #1
Member
 
Join Date: Mar 2011
Posts: 50
Rep Power: 15
cdf_user is on a distinguished road
Hello everyone,

I am trying to simulate the spreading of a droplet on two fibers. I have written a code that does this simulation and I am trying to validate the results with a commercial solver such as Fluent. However, I am not sure if my setup of Fluent simulation is correct and would like to see what you guys think about it.

The first attachment that you see is the result from my code. The second attachment is the mesh that I have prepared for Fluent simulation.

What do you guys think about this setup, especially the boundary conditions?

Mesh Setup:
The mesh basically has a rectangular volume around two cylinders. I have marked this volume as fluid (water). Then there is another volume around the water volume, and this volume is air. All 6 faces of the interior volume (water) are marked as 'interior' and all 6 faces of the outer bigger volume (Air) are marked as 'pressure outlet'.

Fluent Setup:

I have several questions on Fluent case setup.

What is Implicit body force mean in the VOF dialog box in the models tab?

In the Phases tab in Fluent, I have setup my phase 1- primary phase as Air and my phase 2- secondary phase as Water.

There is something wiered going on the Cell zones conditions tab? I have 2 zones listed (Attached screenshot): one water and other one air. when I set the water zone as phase 2 and then click the air zone, the air zone is also phase 2. When I set the air zone as phase 1, and click on the water zone, the water zone is also listed as phase 1. For some reason, I cannot mark the two cell zones as phase 1 and phase 2 zones separately?????????????
Attached Images
File Type: jpg demo1.jpg (27.0 KB, 11 views)
File Type: jpg 3d mesh.jpg (45.6 KB, 10 views)
File Type: jpg Fluent cell zone conditions.jpg (30.6 KB, 10 views)
cdf_user is offline   Reply With Quote

Reply

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
Modeling Flow/Saturation/Absorption in Fibers Gene Dougherty Main CFD Forum 0 June 6, 2003 14:49


All times are GMT -4. The time now is 10:01.