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

Free Surface Flow

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 14, 2011, 02:23
Default Free Surface Flow
  #1
New Member
 
Vishal
Join Date: Feb 2011
Location: Bhopal, M.P. (India)
Posts: 18
Rep Power: 15
vishal.indomitable is on a distinguished road
Send a message via Yahoo to vishal.indomitable
Hi Dear all,
I want to use ANSYS CFX to model a jet of water coming out of nozzle impinging on a flat plate. The inlet boundary condition is Velocity at the inlet of the nozzle. What can be the outlet boundary conditions and the expressions for creating the jet of water in air?
Please help me.
vishal.indomitable is offline   Reply With Quote

Old   February 14, 2011, 05:54
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,665
Rep Power: 143
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
For setting up what I assume is a free surface multiphase simulation have a look at the flow over a bump tutorial example.

Your outlet can probably be an outlet or opening. Which is best will depend on exactly what you are modelling.
ghorrocks is offline   Reply With Quote

Old   February 15, 2011, 03:37
Default
  #3
Senior Member
 
Join Date: Jun 2009
Posts: 100
Rep Power: 16
alastormoody11 is on a distinguished road
Hi,

you can also take a look at Flow from a circular vent which deals with smoke jet emanating from a chimney and hence is very much similar to your simulation. Also regarding the boundary conditions you can choose a pressure outlet as the boundary by taking a sufficiently large CV.
alastormoody11 is offline   Reply With Quote

Old   February 22, 2011, 00:05
Default
  #4
New Member
 
Vishal
Join Date: Feb 2011
Location: Bhopal, M.P. (India)
Posts: 18
Rep Power: 15
vishal.indomitable is on a distinguished road
Send a message via Yahoo to vishal.indomitable
Thank You Dear. Thanks for your reply. I've tried these tutorials. Outlet boundary condition will be opening to atmosphere i.e., constant pressure at outlet. But I've not got the results accurately. Some expressions or functions needs to be defined. Please Can you suggest me what expressions should I create?
vishal.indomitable is offline   Reply With Quote

Old   August 24, 2011, 07:44
Default
  #5
New Member
 
Vishal
Join Date: Feb 2011
Location: Bhopal, M.P. (India)
Posts: 18
Rep Power: 15
vishal.indomitable is on a distinguished road
Send a message via Yahoo to vishal.indomitable
Hello Dear all,
Greetings of the day. Please someone help me in creating the expressions. I've tried many but the results using function calculator and theoretical results vary by about 9.72% which is vary large.
vishal.indomitable 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
Thermocapillary free surface flow zakifoam OpenFOAM Running, Solving & CFD 10 December 12, 2016 12:44
free surface flow past cylinder vineet FLUENT 1 February 22, 2011 00:11
CFX gravity driven free surface flow tutorial mechovator CFX 37 July 27, 2009 11:28
free surface flow in non-inertial reference frame Tiedingg FLOW-3D 1 February 26, 2009 20:51
Free surface flow simulation question Jane Luo FLUENT 1 April 23, 2004 05:26


All times are GMT -4. The time now is 21:08.