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Showing results 1 to 9 of 9 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX March 29, 2015, 18:14

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks Spurious currents at the interface is a common... Spurious currents at the interface is a common problem with free surface models with surface tension. So only turn the surface tension model on if you really need it. I strongly disagree that mass...

Forum: CFX March 29, 2015, 05:22

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks I have never done this type of model. CFX should... I have never done this type of model. CFX should have the necessary models to do it. But do not be confused into thinking this is a simple simulation - multiphase with phase change mass transfer is...

Forum: CFX March 21, 2015, 03:54

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks How does the water height increase the... How does the water height increase the evaporation rate?

Forum: CFX March 20, 2015, 06:48

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks What physical process makes dams evaporate faster? What physical process makes dams evaporate faster?

Forum: CFX March 20, 2015, 04:48

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks You can model evaporation in CFX. But the... You can model evaporation in CFX. But the question is more: If you are modelling evaporation in a dam do you need a CFD solver to do it? Why do you want to model evaporation in a dam? What will...

Forum: CFX January 5, 2015, 16:08

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks Treat the liquid domain as a control volume, with... Treat the liquid domain as a control volume, with a specified volume and temperature. Work out the temperature change, the evaporation (mass loss) and volume change for that time step, and iterate...

Forum: CFX January 3, 2015, 04:43

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks Why are you modelling this with CFD? Why can't... Why are you modelling this with CFD? Why can't you just model this with simple control volume approaches?

Forum: CFX November 14, 2011, 05:18

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks If the interface is stationary then I would... If the interface is stationary then I would consider having them as separate domains and not use a multiphase model at all. Then you can impose the free surface transfer functions as interface...

Forum: CFX November 13, 2011, 16:52

Replies: 24 Liquid Water Free Surface Evaporation Views: 9,470 Posted By ghorrocks What does the free surface do? Is it always flat... What does the free surface do? Is it always flat or close to it? Does it go up and down? Or does it have waves, splashing and/or foam? Each of these different states should be modelled differently.

Showing results 1 to 9 of 9

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