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

LISA model for biomedical application

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 16, 2009, 07:22
Default LISA model for biomedical application
  #1
New Member
 
ManChiu
Join Date: Jul 2009
Posts: 13
Rep Power: 17
jeff_F is on a distinguished road
Hi all,

This is my first time to post here, hope I can get some advice from the experts here.

I just started my research on the atomization of spray from a medical device. I would like to use LISA model to simulate the primary atomization. The problem is that I found the breakup length was almost 15 times longer than my experimental result. It's too ridiculous.

In the default interface, I can only change the long/short wave ligament factor and droplet diameter size factor only. They are all not related to the calculation of breakup length.

Is there anyone have experience to simulate a spray with low injection pressure?
jeff_F is offline   Reply With Quote

Old   July 16, 2009, 19:28
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,830
Rep Power: 144
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
Hi,

I am no expert on spray modelling so I might be completely wrong here (if somebody knows for sure please correct me!), but here goes:

I think the spray models in CFX are designed for high pressure sprays found in fuel injectors for engines. This means they will be tuned to very different regimes to the low pressure regime you are in, so it does not surprise me that they are miles off. You may be able to tweak it to operate in the low pressure regime but I can't be sure - it will be a research project which will require some work.

Glenn Horrocks
ghorrocks is offline   Reply With Quote

Reply

Tags
lisa model, spray

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
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 05:36
LISA model brajh11 CFX 0 May 15, 2009 10:49
simulation results for k-w model and SST model Li CFX 7 June 29, 2007 04:19
Multiphase flow. Dispersed and free surface model Luis CFX 8 May 29, 2007 18:13
k-epsilon model application for turbines Yann Soarnec Main CFD Forum 4 May 25, 1999 06:05


All times are GMT -4. The time now is 01:42.