Multiphase CFD simulation of a packed bed scrubber using periodic boundary conditions
Author
Term
4. term
Education
Publication year
2020
Submitted on
2020-05-28
Pages
72
Abstract
In this study a numerical analysis of the flow behaviour on and around filling elements in an exhaust gas scrubber is conducted using the Volume of Fluid method and periodic boundary conditions. Two VOF models have been tested with the difference being the schemes, MULES or isoAdvector, used to recreate the interphase between the fluids. The specific pressure loss and water droplets terminal velocity have been validated using periodic boundaries. Furthermore simulations of the dynamic behaviour of water droplets on solid surfaces have been conducted and validated against empirical data. The simulations of the water and gas behaviour around the filling elements showed that the MULES scheme requires a fine mesh to properly resolve the interphase. On the other hand the isoAdvector scheme was able to obtain a sharp interphase on a coarser mesh, however the water volume within the system was not conserved over time.
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