Numerical simulation of pulsed liquid fluidized bed and its experimental validation

• Published in: Powder technology Vol. 119; no. 2; pp. 153 - 163
• Main Authors: Jin, Guodong, Nie, Yongsheng, Liu, Dayou
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 24.09.2001; Elsevier
• Subjects: Applied sciences; Chemical engineering; Exact sciences and technology; Experiment; Fluidization; Numerical simulation; Pulsed fluidized beds; Two-fluid model; Numerical simulation; Pulsed fluidized beds; Experiment; Two-fluid model; Collapse; Pressure fluctuation; Liquid fluidization; Pulse; Theoretical study; Fluidized bed height; Hydrodynamics; Volume expansion; Velocity distribution; Experimental study; Liquid solid; Modeling; Mathematical model; Concentration distribution
• ISSN: 0032-5910; 1873-328X
• DOI: 10.1016/S0032-5910(00)00414-9

The pulsed liquid fluidized bed was studied using numerical simulation and experimental methods. The area-averaged two-fluid model (TFM) was used to simulate the pulsed fluidization. The bed expansion and collapse processes were simulated first and the phenomena obtained from the calculation were consistent with our previous experiments and observations. In the pulsed fluidization, the variation of bed height, the variations of particle velocity and concentration distribution were obtained and analyzed. Experiments were carried out to validate the simulation results. The pressure variation with time at different locations was measured using pressure transducers and compared with the simulated results. The variations of bed height and particle concentration distribution were recorded using a digital video camera recorder. The results were consistent with the simulation results as a whole.