Research on Simulation and Flow Field Characteristics of Three-phase Eddy Current Mixers
To improve the mixing efficiency of oil-containing wastewater,gases,and chemicals,a geomet-ric model of a three-phase swirl mixer was established based on fluid dynamics theory and Computational Fluid Dynamics(CFD)simulation technology.By measuring data from oil-containing wastewater samples,inlet parameters were obtained and used for simulation to study the flow field distribution characteristics of different phases within the three-phase swirl mixer under varying gas phase inlet velocities and chemical in-let positions.The research results show that the internal flow field characteristics of the three-phase swirl mixer are closely related to the gas phase inlet velocity.The gas phase column in the inner cylinder exhib-its a conical distribution,and as the gas phase inlet velocity increases,the gas phase column grows with in-creasing gas charge.At the outlet,the bubble size is influenced by the overall flow field.At a gas phase inlet velocity of 5 m/s,the outlet contains the highest concentration of small bubbles.The position of the chemical inlet affects its distribution within the mixer.When the chemical inlet is on the side of the mixer,the chemical mostly participates directly in the mixing process.However,when the chemical inlet is con-nected to the liquid phase inlet,the chemical tends to linger inside the mixer,resulting in a lower chemical content at the outlet compared to when the chemical inlet is on the side of the mixer,thereby leading to su-boptimal mixing efficiency.
the three-phase mixerbubble diametermixing efficiencyair flotationoily wastewater
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