01968nas a2200241   4500008004100000022001400041245008300055210006900138260010600207300001200313490000700325520108500332653001801417653000801435653001301443653003401456653003601490653002001526100002001546700002401566700002201590856011401612       2006                        eng d  a0301-932200aEulerian-lagrangian simulations of unsteady gas-liquid flows in bubble columns0 aEulerianlagrangian simulations of unsteady gasliquid flows in bu  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcJUL  a864-8850 v323 a<p>We studied the dynamics of gas-liquid flows in a rectangular bubble column using Eulerian-Lagrangian simulations. Three-dimensional, unsteady simulations were performed to simulate the dynamic characteristics of the oscillating bubble plume. The effect of superficial gas velocity and aerated liquid height-to-column width (HI K) ratio on the dynamic and time-averaged flow properties was studied and the simulated results were validated using wall pressure and voidage fluctuation measurements. The effect of lift force and numerical diffusion on the dynamic and time-averaged properties is discussed in detail. Further, the results obtained using the Eulerian-Lagrangian simulations were compared with the Eulerian-Eulerian simulations. The bubble scale information, which is otherwise lost in the Eulerian-Eulerian simulations, was validated using the voidage fluctuation measurements. Such experimentally validated Eulerian-Lagrangian models will be useful for the simulation of mass transfer and reactions in bubble columns. (c) 2006 Elsevier Ltd. All rights reserved.</p>10aBubble column10aCFD10aDynamics10aEulerian-Eulerian simulations10aEulerian-Lagrangian simulations10agas-liquid flow1 aBuwa, Vivek, V.1 aDeo, Dhanannjay, S.1 aRanade, Vivek, V.  uhttps://library.ncl.res.in/content/eulerian-lagrangian-simulations-unsteady-gas-liquid-flows-bubble-columns-0