Parametric study of gas-solid flow characteristic by using integration computational fluid dynamics and dynamic simulation

Abstract

The multiphase gas-solid in the FCC Riser system is a complex flow. The particle flow influenced by superficial velocity. Some researchers showed that it needs a method to solve the advanced analysis in solid-particle characteristics, for example, Reynold number particle, the difference of height fluidization, coefficient of drag, and particle forces. This research gives an alternative method by integrating the CFD method and dynamic simulation method. We used EES as dynamic simulation software. The simulation data need some data such as average fluid velocity, average solid velocity, a maximum height of fluidization, and void fraction. The mathematical model is performed and the simulation data is copied to EES to analyst the gas-solid flow characteristic. This parametric study has been carried out with several superficial velocity 0.35 m s−1, 0.45 m−1, 0.5 m−1, and 0.7 m s−1. The results show that there are fluctuations in the forces received by the particles due to changes in the superficial velocity. However, the tendency of fluctuation trend to be directly proportional to the increase in the superficial velocity. The dynamic simulation calculations have a good agreement compare to literature studies and basic theory for solid flow behaviour in bubbling regimes.