[fluentuser10000]

Hello all,

I am modeling gas-liquid mass transfer in Fluent. I am creating 2 mixture templates:

gas-phase: O2(gas)-air
Liquid-phase: O2(gas or liquid?)-water

O2 is resolved into water
1-My question is, should I use liquid O2 in the liquid phase or O2 component in the liquid must be the same as the one in the gas phase? (I tried both-still it does not work)

2- Do I need to solve the energy equation for this problem? (in case temperature is constant)

Does anyone have any experience with that?

Thanks,

[fluentuser10000]

Hello everyone,

I am modeling the mass transfer of oxygen in the water in a mixing tank.

I am using the species mass transfer model with Henry's law equilibrium and also use a UDF for mass transfer based on Higbie's theory:

m_lg = ((0.4)*pow(D_O2,0.5)*pow(C_D(c,thread)*C_R(c,liq)/C_MU_EFF(c,liq), 0.25));

-The problem is the amount of dissolved oxygen exceeds the saturation concentration of Oxygen at 25 C.

Does anyone have any idea where I might have made a mistake here?

Thanks,