CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Boundary conditions for an axisymmetric round jet

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

LinkBack Thread Tools Display Modes
Old   September 3, 2010, 10:26
Default Boundary conditions for an axisymmetric round jet
New Member
Join Date: Jun 2010
Posts: 3
Rep Power: 9
marymasod is on a distinguished road
hello all , i am new to the use of Fluent so am running a basic case of an axisymmetric round jet. I am getting comparable results for velocity with the literature but the turbulent kinetic energy graphs shows a starneg trend. It first drops for a small distance and then it increases but the increases is very slow. I am worried that i might have put in wrong BC
so my velocity at inlet is 50m/s, here am a bit unsure that what conditions tow give for turbulence i mean what field to choose so i chose turbulence intensity & hydraulic diameter and gave an estimated quantity of 5%
the rest of the region on velocity inlet side is a co flow region with a vel of 0.2m/s
pressure is 0 gauge pressure and no slip walls...
can somebody please suggest as i know it wouldnt be a pb for an expert user.
marymasod is offline   Reply With Quote


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
Wind turbine simulation Saturn CFX 45 February 8, 2016 05:42
Cyclic boundary conditions axisymmetric gabriel OpenFOAM Running, Solving & CFD 0 July 27, 2007 11:24
Boundary Conditions and solver for low Mach laminar air jet fbisetti OpenFOAM Running, Solving & CFD 1 September 13, 2006 12:49
Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 2 July 15, 2005 04:15
A problem about setting boundary conditions lyang Main CFD Forum 0 September 19, 1999 18:29

All times are GMT -4. The time now is 22:02.