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How to calculate Volumetric Mass transfer coefficient using CFX? |
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#1 |
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tukaram
Join Date: Jul 2010
Posts: 9
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Hi,
We have measured mass transfer coefficient from experiments and we want to validate it using CFX. The process is absorption of CO2 from Air to liquid solvent NH3. We plan to use inter-phase mass transfer model to simulate mass transfer between gas & liquid phases. Following are some questions:
Thanks Tuks |
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#2 |
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Tommy
Join Date: Jul 2010
Posts: 10
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I'm not clear of your problem, just a suggestion. Hope it may help.
If the dissolved gas in liquid will not enlarge volume of liquid, can you calculate the decreasement of gas volume from outlet and inlet? |
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#3 |
New Member
tukaram
Join Date: Jul 2010
Posts: 9
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My objective is to evaluate overall volumetric mass transfer coefficient for CO2 absorption from Air (gas) to Amine (liquid) with no reactions.
Using basic definition "N*a = K_L*a*(C_L_eq - C_L)". Where N is molar flux, K_L*a is volumetric coefficient and C_L_eq and C_L are concetration at interface (in equlibrium with gas phase conc) and bulk concentration. All values pertaining to CO2 in liquid ammonia/amine. Can we evaluate K_L*a from hydrodynamics and concentration profiles in CFX? My approach could be
Experts views are welcome. Thanks Tuks |
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