|November 10, 2011, 13:26||
Initial yield stress for Hershel-Bulkley model
Join Date: Oct 2009
Posts: 5Rep Power: 8
I am attempting to simulate 2D channel flow of a Herschel-Bulkley fluid. It is a simple problem, but my results cannot match with literature values.
1. The initial yield stress leads to lower velocity comparing with theory values. Sometime, it also leads to continuity convergence problem.
2. The velocity profile cannot show slug-flow zone that is predicted by theory.
I have used the Herschel-Bulkley model in FLUENT and UDF to define the viscosity. Both of two methods have the same issues.
Any suggestions? Thanks in advance!
|Thread||Thread Starter||Forum||Replies||Last Post|
|Darcy-Forchheimer law for specifying Porous Zones||Ger_US||OpenFOAM Running, Solving & CFD||26||August 18, 2016 13:19|
|Moving mesh||Niklas Wikstrom (Wikstrom)||OpenFOAM Running, Solving & CFD||122||June 15, 2014 06:20|
|How to write k and epsilon before the abnormal end||xiuying||OpenFOAM Running, Solving & CFD||8||August 27, 2013 15:33|
|icoLagrangianFoam OF1.6 myNewParticleSolver||heavy_user||OpenFOAM||16||February 11, 2012 06:15|
|Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3||bookie56||OpenFOAM Installation||8||August 13, 2011 04:03|