2020 年 53 巻 3 号 p. 85-94
In this work, the fluidization of cohesive particles in a bubbling fluidized bed was simulated using a modified kinetic theory of the granular flow-modified population balance model (MKTGF-MPBM) coupling method. In the MKTGF, the restitution coefficient of the collision was corrected using the square well potential, and in view of the particle collision deformation, the particle temperature θe was modified. In the MPBM, the collision efficiency α was introduced to correct the turbulence agglomeration kernel and the mean square root was used to modify the total agglomeration kernel function. The simulation results showed that the viscosity correlation coefficient, obtained after the modification of collision restitution coefficient was μs=0.018εs1/3 g0, and the average value of the modified particle temperature (pulsating energy) was 0.002–0.0045 m2/s2. The corrected results are more consistent with the experimental data.
