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

Inlet Turbulence

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 6, 2003, 13:04
Default Inlet Turbulence
  #1
Yazhuo Qian
Guest
 
Posts: n/a
To set the Inlet Turbulence in Phoenics 3.4, one could either set the inlet turbulence intensity, or set the KEin and EPin, If I choose to set inlet turbulence intensity, how the Phoenics treat with that condition?

I think it may use the equation: KEin=3*(Ti*U)**2/2, to get KEin. If I am right, what about EPin?
  Reply With Quote

Old   February 14, 2003, 03:02
Default Re: Inlet Turbulence
  #2
neihad
Guest
 
Posts: n/a
I agree with you. EPin can be calculated from the following relationship:

Epin= C^(3/2)* (K^(3/2))/L

where c=constant=0.01-0.1

L=Reference length (e.g. 0.05 D duct)

Regards Neihad
  Reply With Quote

Old   March 28, 2003, 07:43
Default Re: Inlet Turbulence
  #3
John Ludwig, CHAM
Guest
 
Posts: n/a
The inlet turbulence is set as follows:

KEin = ((I/100)*VELin)^2

where I is the intensity in % and VELin is the inlet velocity

EPin = 0.164*(KEin^1.5)/(0.1*l)

where l is half the minimum inlet dimension.
  Reply With Quote

Reply


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
how to specify the inlet turbulence kinetic energy rajesh Main CFD Forum 4 July 29, 2015 08:27
Inlet turbulence generation for LES Sungho Yoon CFX 2 November 4, 2008 10:09
A puzzle about turbulence of B.C. in inlet Yijin Li Fidelity CFD 3 May 2, 2007 22:31
turbulence intensity at inlet raju Main CFD Forum 1 November 16, 2006 01:13
turbulence specification at inlet ziya FLUENT 1 August 16, 2005 02:24


All times are GMT -4. The time now is 18:12.