 |
 |
 |
|
|
|
[Sponsors] | ||||
November 22, 2016, 03:42
|
3D ship model sim
|
#1 |
|
New Member
Andrea
Join Date: Jul 2016
Posts: 25
Rep Power: 9  |
Good morning,
I'm running a 3D ship model simulation, scale 15 ( 3.6m model), k-e turb.model, velocity: 1.329 m/s, in order to verify resistance. Physical time 20 sec, 3 step iteration, 0.01 time step. In the first simulation (pics. 1~2) at 16.5° second, it appeared a trend change in the resistance and residuals ( as if someone stopped the running),while in the attempt n.2 (pics. 3~4) it appeared on the screen, at time 3.44 sec, the error "amg solver diverged", and "a floating point exception has occurred"... Can anyone help me? Thanks |
|
|
|
|
|
November 22, 2016, 13:04
|
|
#2 |
|
Senior Member
Join Date: Nov 2010
Location: USA
Posts: 1,232
Rep Power: 24 |
Your case just blew up. You need to find out where it blew up - look for unphysically large velocities or pressures. What does the grid look like in that location?
Check your inner-timestep convergence. Do your forces converge? 0.01s per timestep seems pretty big. |
|
|
|
|
|
|
November 30, 2016, 16:23
|
|
#3 |
|
New Member
Andrea
Join Date: Jul 2016
Posts: 25
Rep Power: 9 |
Ok, thanks, sorry for my late reply, anyway I solved the error.
|
|
|
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Coupling RPI wall boiling model with population balance model in Fluent | softice2006 | Fluent Multiphase | 1 | April 19, 2023 02:09 |
| [ICEM] Help hexa blocking a DTMB_5415 ship model | Daniel_Khazaei | ANSYS Meshing & Geometry | 5 | August 2, 2016 14:00 |
| Superlinear speedup in OpenFOAM 13 | msrinath80 | OpenFOAM Running, Solving & CFD | 18 | March 3, 2015 05:36 |
| coalChemistryFoam: "Foam::error::printStack(Foam::Ostream&) at ??:?" | musabai | OpenFOAM Running, Solving & CFD | 2 | February 20, 2015 14:07 |
| Advanced Turbulence Modeling in Fluent, Realizable k-epsilon Model | Jonas Larsson | FLUENT | 5 | March 13, 2000 03:27 |
Linear Mode
