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O2 mass fraction in water

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Old   May 8, 2010, 00:16
Unhappy O2 mass fraction in water
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Vinay
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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?
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Old   May 8, 2010, 13:46
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nobody ther to answer???
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Old   May 9, 2010, 01:58
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this is demoralizing ...3 days and no answer!
of course someone must be knowing the answer...but nobody cares to post!
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Old   August 3, 2010, 10:43
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Simon Hans Niemann
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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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