RT Journal Article
T1 Experimental study of bubble dynamics and flow transition recognition in a fluidized bed with wet particles
A1 Wang, Haotong
A1 Soria Verdugo, Antonio
A1 Sun, Jingyuan
A1 Wang, Jingdai
A1 Yang, Yongrong
A1 Hernández Jiménez, Fernando
AB This paper studies the bubble dynamics and flow transition behavior in wet particle systems. Non-coherent algorithm was used to quantitatively calculate the bubble diameters in a three-dimensional fluidized bed system loaded with wet particles, obtaining the bubble dynamics under the action of liquid. The results indicate that the incoherent analysis can detect the formation of even tiny bubbles in the fluidized bed. The kurtosis and skewness of the pressure fluctuation signal was used to obtain the critical transition conditions of the flow pattern from turbulent to laminar. Through the decay index of the incoherent spectrum, the operating conditions of the Levy-Kolmogorov flow pattern to the Kolmogorov flow region were determined. From the comparison of the liquid bridge and the drag forces, the competitive mechanism of different forces acting on the particles that conformed the bed was analyzed, reflecting the change of the apparent minimum fluidization velocity of wet particles.
PB Elsevier
SN 0009-2509
YR 2020
FD 2020-01-16
LK https://hdl.handle.net/10016/33234
UL https://hdl.handle.net/10016/33234
LA eng
DS e-Archivo
RD 1 sept. 2024