CFD Online Logo CFD Online URL
Home > Forums > FLUENT

turbulence specification at inlet

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

LinkBack Thread Tools Display Modes
Old   August 15, 2005, 20:12
Default turbulence specification at inlet
Posts: n/a

Does anybody have an idea how sensitive the turbulence models in Fluent are to the turbulence values at the inlet? Is it just used as a boundary condition to initialise the solution? I am currently validating an experiment about sails where the oncoming flow has a fine scale turbulence. I am using k-w sst.


  Reply With Quote

Old   August 16, 2005, 01:24
Default Re: turbulence specification at inlet
Posts: n/a
As all turbulence models based on k-e model, sst-kw is not very sensitive to inlet values. However, pay attention that Fluent is using user inlet values for turbulence quantities (whichever way you decide to specify them) into calculations!!

In your particular case, I think is better to use a combination of turbulence intensity + turb. lenght scale or turb. viscosity ratio.

Best wishes, Razvan
  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
Default inlet turbulence for LES N Barton CFX 11 July 24, 2015 00:34
Species mass flow inlet lorenz FLUENT 3 March 15, 2012 08:26
Mass Flow Inlet with Velocity specification bernarde STAR-CCM+ 1 December 4, 2009 00:13
Turbulence length scale and integral length scale rizhang CFX 1 September 10, 2009 06:38
Inlet : Turbulence Specification Method PK FLUENT 0 February 2, 2006 11:40

All times are GMT -4. The time now is 15:34.