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Old   May 30, 2018, 02:35
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Pedro Oliveira
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****** Notice ****** |
| The non-dimensional near wall temperature (T+) has been clipped |
| for calculation of vap.Wall Heat Transfer Coefficient. |
| |
| Boundary Condition : JANELA A Side 2 |
| T+ clip value = 1.0000E-10 |
| |
| If this situation persists and you are using the High Speed Model, |
| consider enabling Mach number based blending between low speed and |
| high speed wall functions. You can do so by specifying a Mach |
| number threshold as follows: |
| |
| EXPERT PARAMETERS: |
| highspeed wf mach threshold = 0.1 # default=0.0 (off) |
| END


Im trying to simulate multiphase simulation with phase change between water and water vapour with Particle Model.

I have already updated the expert parameter but I still go this message, does anyone knows the source of the problem?
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Old   May 30, 2018, 02:57
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Glenn Horrocks
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You should consider the information the message is saying. It is saying that the temperatures have been clipped. So did your temperature field start to diverge? Or a simulation setup error means the temperature is not controlled properly somewhere? Is it adequately converged? Have you modified the temperature clipping settings?
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Old   May 30, 2018, 03:36
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Pedro Oliveira
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When I remove turbulence and viscous work from my fluid pair the error message dissapears.

Im using H20l and H20v as my simulation material, do you think its related to the table generation values (max and min temperature and pressure)?
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Old   May 30, 2018, 11:13
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The conditions you are modelling are too complicated. Did you consider moderate conditions as a start and then speed things up? That would be a useful approach.


BTW, why on earth should you switch on viscous work? I think this is completely irrelvant.
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