|
[Sponsors] |
![]() |
![]() |
#1 | ||
Senior Member
Guilherme
Join Date: Apr 2017
Posts: 232
Rep Power: 10 ![]() |
Hello,
First, I'm using OpenFOAM 5.0 (komegaSST), the mesh is attached below as well as the link to Dropbox, where you can see all my settings. Re = 5300 (R = 0,006035 - L=5D) DROPBOX I believe my settings are ''good'', but they can improve and I need your help for this. Inside the file there are two images related to RESIDUAL. With a shorter timeStep I was able to converge faster, but to certain extent (300 iterations), then tend to behave steadily ... I would like to improve performance, because according to bibliographical references it was possible the convergence with 1200 iterations (if not verified in my configurations). And a question that arises is with respect to the Courant number, for deltaT = 1e-4 the value is around 0.1, while for deltaT-1e-6 this value drops significantly (Co = 0.01). Would it be necessary to have such a low Co to accelerate convergence? Quote:
Quote:
... and, according to my settings, I set the internal velocity to be 1 m/s (because it is a cyclic domain, there is a need for a fvOption file). This velocity was not constant throughout the iterations, reducing it. This is normal? Thanks Last edited by gu1; December 20, 2017 at 13:12. |
|||
![]() |
![]() |
![]() |
Tags |
komegasst, openfoam, pisofoam, wallfunction |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Laminar Pipe Flow convergence issues | preichl | OpenFOAM Running, Solving & CFD | 11 | September 22, 2014 21:22 |
Internal Flow Not Enough Turbulent - (pisoFoam, LES, sub grid models) | vut | OpenFOAM Running, Solving & CFD | 5 | September 15, 2014 14:18 |
modeling a pipe with both internal and external flow | amir_14 | FLUENT | 4 | July 9, 2014 17:18 |
[snappyHexMesh] Pipe flow / Internal fluid dynamics with SnappyHexMesh | denner | OpenFOAM Meshing & Mesh Conversion | 3 | October 13, 2011 09:24 |
Disturbed flow field at outlet boundary (Multiphase flow through pipe) | Michiel | CFX | 17 | April 21, 2010 10:14 |