Modelling of the Interaction between Gas and Liquid in Stirred Vessels

Gas–liquid flow generated by a Rushton turbine in stirred vessel: CARPT/CT measurements and CFD simulations

“…Recently, Lane et al (2000) studied the effect of turbulence on the drag coefficient (slip velocity). Based on a comparison of the predicted gas volume fraction distribution with the experimental data, they recommended a turbulence correction factor proposed by Brucato et al (1998) but with a lower value of the correlation constant.…”

“…Several attempts have been made in recent years to develop computational models of gas-liquid flows in stirred vessels (for example, Gosman et al, 1992;Morud and Hjertager, 1996;Bakker and van den Akker, 1994;Ranade and van den Akker, 1994;Ranade and Deshpande, 1999;Lane et al, 1999Lane et al, , 2000Khopkar et al, 2003). Most of these studies were restricted to very low gas flow rates with complete dispersion regime present in the reactor.…”

Influence of the Relative Position of Impeller and Baffles in Multiple Reference Frame Simulation of Gas-Liquid Mixing in Stirred Tank

“…The reactor top was assigned as pressure outlet with backflow volume fraction of air set to zero, which corresponds to degassing condition. The interphase interaction included only the drag force since the cumulative effect of lift, wall lubrication and turbulence diffusion forces can be considered negligible according to Lane et al and Scargiali et al [17], [18]. Scargiali et al and Brucato et al [19] showed the superior performance of the Morsi-Alexander drag force in combination with the Brucato modification coefficient included.…”

Assessment of Interaction between Baffles and Impeller Blades in Stirred Tanks

“…The reactor top was assigned as pressure outlet with backflow volume fraction of air set to zero, which corresponds to degassing condition. The interphase interaction included only the drag force since the cumulative effect of lift, wall lubrication and turbulence diffusion forces can be considered negligible according to Lane et al and Scargiali et al [16,17]. Scargiali et al and Brucato et al [18] showed superior performance of the MorsiAlexander drag force in combination with the Brucato modification coefficient included.…”

“…Since 80's stirred tank modelling has been enlightened in literature by many research groups such as Issa and Gosman, Harvey and Greaves, Lane et al, Vivek et al, Laakkonen et al, Bai et al, and Huang et al among many others [1][2][3][4][5][6][7]. Liquid mixing is described numerically mainly via two-equation models of RANS family due to affordable computational load.…”