Ansys Learning Forum Forums Discuss Simulation Fluids Error in spray evaporation calculation due to temperature overflow, Forte Reply To: Error in spray evaporation calculation due to temperature overflow, Forte

jcooper
Ansys Employee

Hi:

Have you checked the Forte.log file to see what the timestep is heading into the fuel injection?  It is possible that this is too large and causes immediate overflow. If you limit your maximum timestep, this may help:

Droplets may evaporate too quickly or burn too fast, depending on how the spray is set up.  Make sure that the droplet size distribution and inlet temperature is reasonable.

 

You can also modify the spray parameters, specifically the spray breakup parameters, to see if this helps.

If you mouse-hover over the various settings, you will see how each one may affect the breakup rate (This also applies to all other settings in Forte):

 

I hope this helps.

Best Regards,

Judy