Abstract—The phenomenon of mass transfer is of vital importance in numerous industrial applications where gas and liquid phases interact. These mainly comprise chemical, semiconductor production, material industries etc. Separation of CO
2 and other gasses from different materials, generating impurities and compromising material’s electrical and mechanical properties are of prime importance. CO
2 absorption of a film flow of poly-ethylene terephthalate (PET) on a rotating disc is taken as a sample case for investigation through advanced computational fluid dynamics (CFD) modelling. A survey was conducted for different degrees of polymerization and angular velocities. The Volume of Fluid model (VOF) was used to measure the layer thickness of the molten PET, which can affect the mass transfer phenomenon. The profile of the concentration of CO
2 was also investigated through user defined scalar (UDS) transport equations. This work is based on observation and investigation of the concentration profiles at different positions over the disc which emphasised the effects of the convective forces in the mass transfer phenomenon particularly at higher radial position. The results revealed that mass transfer of CO
2 depends on the thickness of PET layer and fluid viscosity. It was also observed that convection transport strongly influences the rate of absorption over different disc positions.
Index Terms—Absorption, Computational Fluid Dynamics (CFD), film flow, mass transfer, rotating disc, thickness.
MD S. Miah is with Military Technological College, Muscat, Oman and University of Portsmouth, UK. He was with Wrexham Glyndwr University, Wrexham, UK. (e-mail: Md.salim@mtc.edu.om). Mohammad S. Hossain, Muhammad A. Ashraf, and Zoubir Zouaoui are with Military Technological College, Muscat, Oman (e-mail: Sayeed.hossain@mtc.edu.om, m.ashraf@mtc.edu.om, Zoubir.zouaoui@mtc.edu.om).
Abid A. Khan is with Military Technological College, Muscat, Oman and Institute of Space Technology, Pakistan (e-mail: Abid.khan@mtc.edu.om).
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Cite: MD S. Miah, Mohammad S. Hossain, Abid A. Khan, Muhammad A. Ashraf, and Zoubir Zouaoui, "CO2 Absorption and Mass Transfer in Film Flow on a Rotating Disc," International Journal of Chemical Engineering and Applications vol. 11, no. 1, pp. 18-22, 2020.
