|
[Sponsors] |
![]() |
![]() |
#1 |
Guest
Posts: n/a
|
Hi Dear Friends.
What are the definitions of ISOTROPIC turbulence and HOMOGENEOUS turbulence? Thanks. |
|
![]() |
![]() |
![]() |
#2 |
Guest
Posts: n/a
|
Isotropic turbulence means that the normal components of the Reynolds stress tensor are equal each other. I.e. u'u'=v'v'=w'w'. In other words the turbulent correlations are independent of the direction
Homogeneous turbulence means that spatial gradients of the turbulent correlations are equal zero. Isotropic homogeneous turbulence is the idealisation which can never be found in the real engineering flows but can be artificially generated in wind tunnel by means of so called turbulent grid |
|
![]() |
![]() |
![]() |
#3 |
Guest
Posts: n/a
|
isotropic originally means independent of rotation of coordinates.
homogeneous means independently of translation. but, when talking about isotropic turbulence, we also imply it's already independent of translation. look at Batchelor 's book on Homogeneous turbulence. |
|
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
difference between isotropic and homogeneous in turbulence | dut_thinker | Main CFD Forum | 11 | January 23, 2021 11:11 |
axisymmetric homogeneous isotropic turbulence | RAJANI | Main CFD Forum | 1 | April 24, 2006 06:44 |
Help needed on homogeneous isotropic turbulence an | Guoping Xia | Main CFD Forum | 0 | March 12, 2006 21:54 |
isotropic homogeneous turbulence | tingguang | Main CFD Forum | 0 | August 1, 2002 17:08 |