화학공학소재연구정보센터
AIChE Journal, Vol.64, No.7, 2689-2701, 2018
Bubble-separation dynamics in a planar cyclone: Experiments and CFD simulations
A planar cyclone is designed for visualizing bubbles in the cross-section of a degassing hydrocyclone. The pressure distribution is studied through a series of experiments and Reynolds stress model simulations. The velocity distribution of the planar cyclone mostly exhibits the quasi-forced vortex zone and boundary layer zone. The bubble dynamics are simulated using both Euler-Euler and Euler-Lagrange approaches, and the output is compared with the imaging results. The Euler-Euler simulation provides more accurate predictions of the bubble trajectory. The histograms of residence time and traveling distance given by the Euler-Lagrange approach exhibit a reasonably regular pattern. With higher values of the inlet Reynolds number, stronger forces acting on the bubbles lead to a decreased but more uniform residence time. (c) 2018 American Institute of Chemical Engineers AIChE J, 64: 2689-2701, 2018