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

Simulating Abrasive water jet nozzle behaviour

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 26, 2007, 06:16
Default Simulating Abrasive water jet nozzle behaviour
  #1
Marika
Guest
 
Posts: n/a
Hi to everyone. I am a new Fluent user and I am trying to simulate the behaviour of a AWj experimantal nozzle. I assumed that my case is steady, and i am trying to simulate tha case with water and air only to try to understand better all the phenomena. I am trying to use the eulerian model, but it doesnīt work. (it changes nothing in the field of phases, the water is blocked at the inlet). So i am trying to use the mixture model, and once the simulation is converged, i wanna use the results as initial condition for the euler model. But i have discovered a lot of anomalies: 1. I achieve convergence only when i donīt contemplate slip velocity, and only after 28000 iterations (a little too much?) 2. There is no way that I can use the euler model after: after few iterations I have divergence.

I have a lot of doubts, mostly cause we are talking about one nozzle with one diameter that changes along the lenght, so I am note sure about the relevant dimension that I must take for the turbukence lenght scale. I would appreciate any kind of suggestions and help. I thank anyone in advance.

  Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
C-D nozzle supersonic jet boundary Gland FLUENT 4 May 24, 2012 00:25
Modeling water jet exiting nozzle pluto STAR-CCM+ 1 November 18, 2009 20:41
Simulating Abrasive water jet nozzle behaviour Marika FLUENT 0 January 26, 2007 06:15
Simulating air jet into 2D & 3D water domain Imran FLUENT 0 June 6, 2006 08:57
uptodate water distribution network fredius,magige,tanzanian,(e.a) Main CFD Forum 0 January 27, 2002 08:10


All times are GMT -4. The time now is 14:10.