CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

yPlus value in internal flow (natural convection in cavity)

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 26, 2017, 09:07
Default yPlus value in internal flow (natural convection in cavity)
  #1
New Member
 
Tarun
Join Date: Jun 2016
Posts: 6
Rep Power: 10
tarunw is on a distinguished road
I am trying to validate the turbulent case of following paper
goo.gl/xuAOwy

I am using buoyantBoussinesqPimpleFoam solver for this. Also I am using k-omega turbulence model. There are multiple points that I don't understand

1. What value of turbulent prandtl number should I use for my case(I guess unity is a good choice)?
2. Since I am using wall function so value of yPlus should lie around 30-40 but since it is a case of internal flow I don't know how to calculate grid size (since I don't know velocity near wall) . How to tackle this problem?
3. Also how to calculate deltaT value ?

Since I am new to OpenFOAM so please be elaborate even if you find my questions silly

Last edited by tarunw; January 26, 2017 at 14:42.
tarunw 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
Flow is not converging in natural convection problem of boussinesq model for air rahulsharma FLUENT 4 December 2, 2020 21:07
natural convection in closed cavity with chtMultiRegionFoam and variable properties FoamBoy OpenFOAM Running, Solving & CFD 0 February 5, 2015 10:30
Question Regarding Modelling Internal Flow Alteran CFX 1 September 4, 2013 12:07
FLUENT 6.3: how to model natural convection in square cavity partially heated lbmagis FLUENT 0 November 19, 2012 09:53
Natural Convection using Compressible Flow (chtMultiRegionFOAM) msarkar OpenFOAM 2 September 7, 2010 00:13


All times are GMT -4. The time now is 01:17.