 |
 |
 |
|
|
|
[Sponsors] | ||||
|
|
March 24, 2020, 18:23
|
Diverge on Cyclic ABL Simulation
|
#1 |
|
Member
Sereff
Join Date: Jan 2019
Posts: 48
Rep Power: 7  |
Hi Foamers,
I was trying to run a LES simulation of neutral ABL on a cyclic domain (surface roughness 0.1m). I excited the velocity field with a DFSEM inlet and then set the inlet and outlet BC to be cyclic. To keep the flow running, fvOptions (meanVelocityForce, relaxation 0.5 included) was used, and here came the problem. The flow diverged. I read the output.log and it seems that in the first few steps the calculated pressure gradient calculated by fvOptions went crazy (ranging between 1e4 to -6e3). Have anyone ecountered this kind of behavior? Kind regards, |
|
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Mapping Field Data for Mesh Regions from Another Simulation | veterator | OpenFOAM Pre-Processing | 1 | July 10, 2018 05:28 |
| How to setup initial pressure for an ABL buoyantBoussinesqSimpleFoam simulation | leonardo.oliveira | OpenFOAM Pre-Processing | 1 | November 20, 2014 11:17 |
| InterFoam cyclic BC | sfotovati | OpenFOAM | 12 | August 23, 2013 14:30 |
| ABL simulation with experimental data: problems and doubts | Davide_sd | OpenFOAM Running, Solving & CFD | 0 | May 22, 2013 18:35 |
| DISS causes simulation to diverge | Cb | Siemens | 1 | October 21, 2005 05:45 |
Hybrid Mode
