Hi, i am trying to analyse diffusion of a colored glycerol-water mixture droplet into an uncolored one, both with the same fluid properties, inside a domain filled with air. I am currently trying to apply the species transport model to apply diffusion parameters. My question is how to apply this to the droplets where one has a concentration of 1 and the other 0, to measure ones diffusion into another after coalescence. Secondly would i require to use a multiphase model? Thanks
#ANSYS #fluent #multiphase #speciestransport
I think that you can directly use the multiphase flow interface available in Fluent.
To do this:
I have to underline that this kind of simulations is much easier when using COMSOL Multiphysics; see our paper on Y-micromixers:
https://www.researchgate.net/publication/354032403_Exploiting_limitations_of_fused_deposition_modeling_to_enhance_mixing_in_3D_printed_microfluidic_devices
DOI: 10.1108/RPJ-03-2021-0051
A guide to modeling the fluid mixing has been reported at following link:
https://www.researchgate.net/post/How_can_I_simulate_mixing_two_different_fluids_with_COMSOL_Multiphysics_software
Best regards,
AP
Hi, thank you for your response!
in my simulation i am dropping a free droplet under gravity into a static droplet on a surface, and therefore I am not suing inlets or outlets, is there a way of defining volume fraction where there are no inlets or outlets?
Thanks
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