|February 13, 2010, 22:10||
VOF source terms (Momentum and Mass)---How to define them ?
Join Date: Feb 2010
Posts: 19Rep Power: 7
My model is steady 3D VOF...I have to simulate flow out of a nozzle now
for this fluid region flowing through the nozzle volume region ( water is secondary phase) definition of Mass source is necessary...
as a rule, momentum sources and turbulence term sources (k epsilon)) MUST also be defined after defining the Mass source..
The values of source terms are per unit volume in FLUENT according to definition:
I am NOT using any UDF.... I want to directly give a constant value of mass momentum and turbulence sources:
As I have gone through the FLUENT manual, it says that for a fully developed duct flow
the turbulence length scale can be derived through the formula l = 0.07 L.
Basing on this k epsilon and turbulence Intensity can be derived using respective formulas.......
so I did calculations this way....and obtained values for above flow variables
1.can I now assign these calculated numerical values to source terms in the Boundary conditions of my fluid zone in the nozzle (a 3d Cylinder of small radius < 1 mm)
2. I have to define momentum in x y z direction separately, How can I do this? The units are strange and confusing
suggestions are most welcome ......
Life is not always converging ... but u can relax
|mass, momentum, source, terms, vof|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Please Help.....Insufficient Catalogue Size||Paresh Jain||CFX||17||March 11, 2014 12:40|
|Mass source, Momentum source theory.||diffo||FLUENT||4||August 21, 2009 10:26|
|Problem with Mass source, Momentum source theory||diffo||Fluent UDF and Scheme Programming||0||August 20, 2009 06:10|
|how to define momentum source||charonly||FLUENT||1||September 8, 2006 03:45|
|Mass transport, momentum source and turb K.E||CFDtoy||FLUENT||0||April 24, 2006 00:33|