|
[Sponsors] |
Initial yield stress for Hershel-Bulkley model |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
November 10, 2011, 12:26 |
Initial yield stress for Hershel-Bulkley model
|
#1 |
New Member
SingleRain
Join Date: Oct 2009
Posts: 5
Rep Power: 16 |
Hi All
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 Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Darcy-Forchheimer law for specifying Porous Zones | Ger_US | OpenFOAM Running, Solving & CFD | 37 | April 10, 2022 03:38 |
icoLagrangianFoam OF1.6 myNewParticleSolver | heavy_user | OpenFOAM | 23 | June 2, 2020 02:18 |
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 |
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 | bookie56 | OpenFOAM Installation | 8 | August 13, 2011 04:03 |