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

Is it possible to modify turbulence constant in part of domain?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 22, 2021, 13:11
Smile Is it possible to modify turbulence constant in part of domain?
  #1
New Member
 
xicheng wang
Join Date: Sep 2019
Posts: 2
Rep Power: 0
xicheng is on a distinguished road
Hellow everyone,

I'm trying to use single-phase liquid to resolve the effect induced by steam condensation (steam to water). One of the main issues is that the current RANS modes are calibrated by single-phase flow tests.

In my case, the turbulent kinetic energy (tke) in the condensation core region is much higher than the usual single-phase flow and would not dissipate rapidly (intensity >50%). The least complicated way is to modify the 'beta*_inf'
(I use k-omega BSL) to avoid such rapid dissipation of k(tke).

My question is if it is possible to just modify this constant in the region closed to orifice but to keep the default value in the rest of the domain? Or, is there any simple way to avoid such rapid dissipation of k?
xicheng is offline   Reply With Quote

Reply

Tags
fluent, rapid dissipation, turbulence model

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
CFX - specified domain intialization qntldoql CFX 4 September 28, 2020 10:28
Sudden increase the residual of Maxwell's equations hsezsz CFX 2 October 13, 2016 07:58
[snappyHexMesh] crash sHM H25E OpenFOAM Meshing & Mesh Conversion 11 November 10, 2014 12:27
fluid flow but temperature raises from nowhere? mxcfd STAR-CCM+ 5 September 16, 2014 06:46
An error has occurred in cfx5solve: volo87 CFX 5 June 14, 2013 18:44


All times are GMT -4. The time now is 17:48.