 |
 |
 |
|
|
|
[Sponsors] | ||||
April 26, 2020, 17:31
|
Floating point exception
|
#1 |
|
New Member
Join Date: Apr 2020
Posts: 3
Rep Power: 6  |
Hello all,
I am working on a counter pipe flow heat exchanger using ANSYS fluent 2D axisymmetric analysis. I have attempted to run the calculation in the setup section however I get the message: Reversed flow on 12 faces (100.0% area) of pressure-outlet 13. Stabilizing pressure coupled to enhance linear solver robustness. Stabilizing pressure coupled using GMRES to enhance linear solver robustness. Experiencing convergence difficulties - temporarily relaxing and trying again... Experiencing convergence difficulties - temporarily relaxing and trying again... Experiencing convergence difficulties - temporarily relaxing and trying again... Experiencing convergence difficulties - temporarily relaxing and trying again... Stabilizing pressure coupled to enhance linear solver robustness. Stabilizing pressure coupled using GMRES to enhance linear solver robustness. Experiencing convergence difficulties - temporarily relaxing and trying again... Divergence detected in AMG solver: pressure coupled Stabilizing temperature to enhance linear solver robustness. Stabilizing temperature using GMRES to enhance linear solver robustness. Divergence detected in AMG solver: temperature Error at host: floating point exception Error at Node 0: floating point exception ===============Message from the Cortex Process================================ Compute processes interrupted. Processing can be resumed. ================================================== ============================ Error: floating point exception Error Object: #f Calculation complete. It works completely fine when I select 'planar' in the general tab in setup. I am not sure where I am going wrong. Any help would be appreciated Regards, |
|
|
|
|
|
April 26, 2020, 17:45
|
Axisymmetric
|
#2 |
|
Senior Member
|
Fluent's axisymmetric solver has two requirements
1. X-Axis is fixed as axis of symmetry. So, you cannot use any other axis, say, y-axis or any other axis parallel to x-axis defined with axis boundary. 2. There should not be any cell in third and fourth quadrant. Only first and second quadrant can have mesh.
__________________
Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority. |
|
|
|
|
|
|
April 26, 2020, 18:22
|
Geometry
|
#3 |
|
New Member
Join Date: Apr 2020
Posts: 3
Rep Power: 6 |
https://gyazo.com/e3f24a43553355973ed04ae5ea75a74f
Above is my geometry, I believe I have met the requirements |
|
|
|
|
|
|
April 26, 2020, 20:31
|
|
#4 |
|
New Member
Join Date: Apr 2020
Posts: 3
Rep Power: 6 |
It still gives me the same error?
|
|
|
|
|
|
|
April 28, 2020, 12:24
|
Model
|
#5 |
|
Senior Member
|
It looks alright while looking at the image. However, click on Mesh Check after changing to Axisymmetric model. See if Fluent gives an error. If not, then everything about the mesh is alright, the problem would be with setup, most likely boundary conditions.
__________________
Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority. |
|
|
|
|
|
|
January 1, 2024, 05:43
|
Floating point exception
|
#6 |
|
New Member
Mubashir ali
Join Date: Dec 2023
Posts: 3
Rep Power: 3 |
I am doing a simulation of pcm melting in a 2d complex shape with a fin inside it. Mesh size is 0.5mm.
Pcm is lauric acid and viscosity is temperature dependent One side is heated at a constant temp of 70C. The issue i am facing is the floating point exception I have coarsen the mesh but still the same issue |
|
|
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| icoFoam floating point exception (8) | leizhao512 | OpenFOAM Running, Solving & CFD | 7 | November 1, 2018 12:43 |
| A floating point exception has occurred: floating point exception [Overflow]. | starlight | STAR-CCM+ | 4 | May 4, 2016 10:08 |
| A floating point exception - SEM Model | yansheng | STAR-CCM+ | 1 | April 4, 2016 05:57 |
| Floating point exception from twoPhaseEulerFoam | openfoammaofnepo | OpenFOAM Running, Solving & CFD | 1 | March 19, 2016 14:56 |
| Floating point exception (core dumped) for GAMG solver | yuhou1989 | OpenFOAM Running, Solving & CFD | 2 | March 24, 2015 20:28 |
Linear Mode
