CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Programming & Development

water impact surface under electrical field

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 22, 2019, 09:20
Default water impact surface under electrical field
  #1
New Member
 
XinZhou
Join Date: Apr 2018
Posts: 10
Rep Power: 8
XinXin is on a distinguished road
I am simulating a water droplet impact surface under electrical field based on the interFoamEHD solver which designed by ivook.My model is 2D-Axisymmetric. I find that the charge density distribution is weird, there is some charge appearing above the droplet along the axis. I am puzzled by this problem. The charge density distribution is related to the velocity Magnitude.

I think the charge conversation equation is calculated for all computation field,both water and air. However, for water, it will get polarized and ohmic migration of charged ions. For air,it can be regarded as a perfect dielectric, there is no charge convection.Gauss law should be I think we should use different physical model for water and air. But can it be realized in openfoam. I am comfused by the interfoam solver. How does this sovler distinguish the phase1 and phase2? I am reading the twoPhaseMixture.H, incompressibleTwoPhaseMiture.H ,but still get stuck.Could you please give me some advices?
Attached Images
File Type: png charge distribution 2.png (51.9 KB, 23 views)
File Type: png charge distribution.png (97.3 KB, 24 views)
File Type: jpg equation.jpg (21.7 KB, 18 views)

Last edited by XinXin; October 31, 2019 at 07:51.
XinXin is offline   Reply With Quote

Old   July 26, 2020, 21:58
Default
  #2
Member
 
Francisco T
Join Date: Nov 2011
Location: Melbourne, Australia
Posts: 64
Blog Entries: 1
Rep Power: 14
frantov is on a distinguished road
Hi Xin


did you solve this problem? Im also finding some issues along the axis when using axisymmetry for InterFoam
frantov 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
Foam::error::PrintStack almir OpenFOAM Running, Solving & CFD 92 May 21, 2024 07:56
initialize open channel flow with a know water surface profile Ema40 Fluent Multiphase 4 February 21, 2016 11:31
Free water jet impinging hot solid surface, including boiling hamdy Fluent UDF and Scheme Programming 5 August 19, 2012 19:52
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11
uptodate water distribution network fredius,magige,tanzanian,(e.a) Main CFD Forum 0 January 27, 2002 07:10


All times are GMT -4. The time now is 02:03.