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

Transient Spray modeling of evaporating particles

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 9, 2014, 11:09
Default Transient Spray modeling of evaporating particles
  #1
New Member
 
Join Date: Apr 2014
Posts: 1
Rep Power: 0
sgov000ster is on a distinguished road
I have cylindrical domain through which air is flowing at a constant volumetric flow rate.So, only the volumetric flow rate is known at the outlet ( where flow is incompressible), with a known cross sectional area. Within the cylinder ,however, a transient injection of evaporating particles is made at around 200m/s.By the time the spray reaches the outlet , the flow is incompressible. The way I was looking to approach the problem is by specifying a fixed velocity at the outlet through the velocity inlet BC, so that volumetric flow rate is fixed while using the compressible gas law. However, the species concentration needs to be specified at the outlet. The vapor conc at t=0 is 0. The vapor conc. /mass /pressure as a function of time is unknown. Specifying a 0 vapor fraction at the outlet, leads to vapor build up within the system after sometime, which accelerates the flow and leads to basically an unrealistic flow field and poor convergence.

Any suggestions?
sgov000ster 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
transient result in spray reactor with swirl flow glenn creten Main CFD Forum 1 August 14, 2012 05:10
spray modeling saurabh dikshit CFX 1 July 23, 2007 05:20
Euler-Euler simulation of evaporating spray Xavier Ponticq CFX 0 July 4, 2007 08:49
spray modeling in cfx 11.0 skarp CFX 2 June 26, 2007 23:51
temperature fluctuations in an evaporating spray kate Main CFD Forum 0 June 20, 2006 06:35


All times are GMT -4. The time now is 02:12.