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

kEpsilon.H in twoPhaseEulerFoam

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 5, 2011, 22:28
Default kEpsilon.H in twoPhaseEulerFoam
  #1
Member
 
Charlie
Join Date: Dec 2010
Location: USA
Posts: 85
Rep Power: 16
cheng1988sjtu is on a distinguished road
Hi All,

I've looked into the kEpsilon model in the twoPhaseEulerFoam, it seems that the equations are problematic:
fvScalarMatrix kEqn
(
fvm::ddt(beta, k)
+ fvm::div(phib, k)
- fvm::laplacian
(
alphak*nuEffb, k,
"laplacian(DkEff,k)"
)

==
beta*G
- fvm::Sp(beta*epsilon/k, k)
);

in the code, volScalarField G = 2*nutb*(tgradUb() && dev(symm(tgradUb())));
tgradUb = fvc::grad(Ub);

I think the terms in red should include the volumetric fraction "beta", any comments? Thank you,
cheng1988sjtu is offline   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
Something wrong in UEqns.H within twoPhaseEulerFoam cheng1988sjtu OpenFOAM 2 June 24, 2011 11:48
twoPhaseEulerFoam freemankofi OpenFOAM 0 May 23, 2011 17:24
Stratified flow using twoPhaseEulerFoam karthik1414 OpenFOAM 4 May 4, 2011 06:12
stratified horizontal two phase flow usinfg twoPhaseEulerFoam karthik1414 OpenFOAM 0 April 12, 2011 10:57
TwoPhaseEulerFoam bed tutorial case stable in 1.5, crashes in 1.6 hemph OpenFOAM 3 December 5, 2009 05:19


All times are GMT -4. The time now is 00:14.