|July 9, 2009, 04:55||
Join Date: Jul 2009
Posts: 9Rep Power: 8
I use the Hershel-Berkley viscosity model, because the material that i am modeling is non-newtonian, bingham plastic.(Paste.)
Solver setting is, Unsteady, Laminar, Vof.
I need to change the Paste's viscosity and yield stess value with every time step and calculation.
However, the hershel-berkley viscosity model has 4 sections,
1) K - consistency index, but for bingham model, the value has to be viscosity of the material
2) power index, n
3) yield stress
4) yield viscosity(for bingham model, this value must be very large, so I give the value 10 thousand)
I need to change the (1) and (3) value with time.
I think that I have to use UDF for the process, but there's one problem.
I don't have the source code for the Hershel-berkley viscosity.
What can I do?
|Thread||Thread Starter||Forum||Replies||Last Post|
|Flow of Bingham plastic model in Fluent 6.3||koti121||FLUENT||0||April 24, 2009 03:35|
|Modelling Bingham in CFX 11.0||Dirk||CFX||6||March 12, 2009 08:42|
|A simple plastic solid model in FSI||jinwon park||Main CFD Forum||7||April 30, 2008 05:05|
|molten plastic||Koh||Main CFD Forum||2||May 10, 2004 09:12|
|Bingham reology model||HVN||CD-adapco||0||May 2, 2001 07:12|