24TH OPEN ACCESS COMPETITION The project will study the mechanisms that take place in a rotational absorber for CO2 capture (Rotational Packed Bed RPB). The RPB combines hydrodynamic and process mechanisms. The major issues are liquid spray in the rotor eye, in the rotating packing made of knitted wire mesh or a zigzag geometry and in the outer cavity, incl. liquid spray on the outer surface of the packing and formation of a liquid film on casing walls. So far attention has been mostly paid to the effect of rotation or type of the packing on the overall efficiency of gas capture, often supplemented by CFD. However this engineering approach doesn´t elucidate the role of individual elements of the RPB and their contribution to CO2 capture. Moreover there is no relevant literature that illuminates the abovementioned mechanisms in context, and which studies in detail the interaction between liquid distribution and the efficiency of gas capture. Therefore the main goal of this project is to consider the RPB as a whole and using 3D computational modelling with subsequent limited validation to unveil the interconnection and the influence of individual RPB segments on CO2 capture and to optimize their capture efficiency. Due to practically impossibility of experiments inside the packing, 3D CFD simulations using Volume of Fluid technique with a limited validation by own experiments is the only way how to recognize and optimize processes in the entire RPB. Allocation: Barbora VIZ 40, Karolina CPU 780, Karolina VIZ 40