Learning Forum

[Samia Sadaf]

Hi Ansys Learning Forum,

I am simulating water flow boiling through microchannel on Ansys Fluent using VOF model.

I need to calculate vapor quality using x= h-hl/hfg

where h= Specific enthalpy of mixture at measured point

hl=Specific ethalpy of saturated water i.e. 419KJ/kg

hfg=Specific ethalpy of vaporization=hg-hl=2676-419=2257 KJ/Kg 

where hg=Specic enthalpy of saturated vapor

Now the mass average enthalpy of mixture I take from fluent post CFD at any point is -15551372 J/kg .Now how can I use this value to calculate vapor quality,since it is not giving me vapor quality value ranging between 0 and 1.

Please help

 

[Rob]

What is your definition of vapour quality? 

 

https://innovationspace.ansys.com/forum/forums/topic/vapor-quality-multiphase-vof-ansys-fluent/