Simulation and Visualization of Fluidization Phenomenon Using Computational Particle Fluid Dynamic

• Main Author: P Cibro, Teguh.
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43285
• Institution: Institut Teknologi Bandung

Fluidization is a phenomenon in which the bed of solid particle has fluid-like properties when it is flowed by fluid. Fluidization occurs due to drag forces that oppose the gravity of solid particles so that the particles can move in the direction of fluid flow. Fluidization is used in various industries, such as: fluid catalytic cracking (FCC), coal gasification and biomass, fluidized bed combustion and drying processes. However, to obtain optimal conditions on the reactor requires expensive experimental costs and takes a long time. Therefore, a simulation tool is needed to predict the fluid-solid flow pattern. In this undergraduate assignment, simulations are carried out to predict fluid-solid flow patterns that occur in the phenomenon of fluidization. The simulation is carried out using the Barracuda CPFD application. CPFD was chosen because it can predict interactions that occur between particles and consider the particle size distribution. The simulation is carried out using a cylindrical model that has air flowing from the bottom. The cylinder contains silica sand particles up to half parts. The diameter of the silica sand particles used is 100 – 300 ?m. The air flow velocity used is 0,45 m / s. The results of fluidization phenomenon simulation indicate that the bed of particles will be dispersed before reaching the minimum fluidization shortly after flowed by the air. After reaching the minimum fluidization, the particle bed will expand slowly and uniformly. In the simulation results also occur the phenomenon of slugging. In the phenomenon of slugging some empty layers are formed on the particle bed due to the pack of bubbles that lift the layers of the particle bed above it.