Hello all,
I am trying to model CO2 being dissolved in a bubble column filled with water. For mass transfer definitions, I need to define two phases: for instance, liquid and gas, where the liquid phase includes h2o (l) and some other species, and the gaseous phase includes CO2 and air. Fluent only allows me to define material type as "solid", "fluid' or "mixture". I define one "mixture template" in which I add CO2, Air, and H2O (l), but I cannot add another "mixture template" in which I could define similar or different species. I define a dummy phase for CO2, but inside this dummy phase I cannot define a species under "Multiphase model -> Phase Interaction -> Mass -> Mass transfer -> "from phase" and 'species" to 'dummy phase" and "species".
Can anyone please help me with that? I want to do this to instruct Fluent to have mass transfer from CO2 in one phase to CO2 in another phase (dissolving)?
Thank you!
Hi, It seems that the choice of "mixture" model is not appropriate for your considered problem. You must define two separate eulerian phases, one for the CO2 and one for the dissolved CO2. Then you must model the dissolution process using an appropriate mass transfer udf.
Mohammed... You need to fix a sampling tool to be fixed to your column so that you may take a sample from the liquid phase every time and correlate its CO2 content with that of the gaseous phase..It may be in the form of a small glass tubing attached in one end to the lower part of the column and ended with a tap. This is a practical solution if you like to estimate the distribution ratio of CO2 in the two (said) phases. .. Regards
Thank you all for sharing your response. I found the answer and I would like to share it with you.
After creating a mixture and want to create another mixture, when fluent ask if you want to overwrite say no. In this way, we can create a new mixture.
- Badges
- Science topic
- Similar topics
- Geoscience
- Atmospheric Sciences
- Atmosphere
- Air