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

Droplet break up at wire grid - multiphase model selection

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 25, 2021, 07:36
Question Droplet break up at wire grid - multiphase model selection
  #1
New Member
 
Join Date: May 2021
Posts: 1
Rep Power: 0
mafych is on a distinguished road
Hello,

I would like to simulate (star-ccm+, fvm) a water jet (in the next step replaced by a pressurised swirl) flow at I fine wire mesh. The diameter of the jet is 1 mm and the wires thickness 0.3 mm. I suppose to get small daughter droplets with a size about 0.001 mm. The jet is located inside a channel with an air counterflow. I am investigating the influence of the ambient airflow on the water droplets, their droplets distribution, etc.

The problem I am facing is the fine resolution and simulation time. I use Volume of Fluid to capture the interaction between both phases and with the grid (surface tension) and the simulation domain involving a symmetry boundaries reduction but still three dimensional domain has over 10 mil. cells which is too much and not fine enough. I would like to have the results in near future not waiting so long.

My question is if there are any aproppriate models, less time consuming which are able to simulate this problem correctly. I heard about Langragian multiphase models but I am not sure if they perform the droplet breakups and breakup at the grid. But I am not interested in the air flow so I guess the Langragian approch could be relevant in this case?

Thanks for any advice
Mafych
mafych is offline   Reply With Quote

Reply

Tags
atomisation, break up, volume of fluid

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
On grid independent solution for pulsatile flow David FLUENT 5 March 25, 2022 03:33
Multiphase simulation of bubble rising Niru CFX 5 November 25, 2014 13:57
Droplet evaporation in fluidised bed. Help with the model? nb92 FLUENT 0 February 27, 2014 04:17
Reynolds transport, turbulence model, etc Beginner Main CFD Forum 1 January 7, 2009 05:36
regarding eddy break up model dj CFX 0 September 30, 2003 02:05


All times are GMT -4. The time now is 21:04.