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-   -   O2 mass fraction in water (http://www.cfd-online.com/Forums/ansys/75892-o2-mass-fraction-water.html)

vinaynitrkl May 8, 2010 01:16

O2 mass fraction in water
 
At normal temp and pressure, does fluent assume dissolved oxygen content in water to be 7 ppm?
or if not what is the correct value?
and how to assign a new value?

vinaynitrkl May 8, 2010 14:46

nobody ther to answer???

vinaynitrkl May 9, 2010 02:58

this is demoralizing ...3 days and no answer!
of course someone must be knowing the answer...but nobody cares to post!

Simon Hans August 3, 2010 11:43

Use a Henry coefficient (for O2 this is about 45000 bar at 25oC). It relates the partial O2 pressure in the gas phase to the mole fraction in water: Pi = H*x.

Does this help?


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