In this work, numerical simulations for the flow characteristics in a tank of KR mechanical stirring or/and gas injection are performed using the Fluent software. The Eulerian multi-fluid model is employed along with ...In this work, numerical simulations for the flow characteristics in a tank of KR mechanical stirring or/and gas injection are performed using the Fluent software. The Eulerian multi-fluid model is employed along with the standard k-ε turbulence model to simulate the gas-liquid flow in the stirring tank. A multiple reference frame approach is used to model the impeller rotation. Combined the KR mechanical stirring method and gas injection method, a new gas injection plus mechanical stirring method is proposed. The present results show that the gas phase distributes widely in the eccentric gas injection plus mechanical stirring tank. Therefore, the gas holdup would be increased and the better gas-liquid mixing effect can be obtained in the gas injection plus mechanical stirring case.展开更多
基金supported financially by the Natural Science Foundation of Liaoning Province under the grant of 20092002the Program of Introducing Talents of Discipline to Universities under the grant of B07015
文摘In this work, numerical simulations for the flow characteristics in a tank of KR mechanical stirring or/and gas injection are performed using the Fluent software. The Eulerian multi-fluid model is employed along with the standard k-ε turbulence model to simulate the gas-liquid flow in the stirring tank. A multiple reference frame approach is used to model the impeller rotation. Combined the KR mechanical stirring method and gas injection method, a new gas injection plus mechanical stirring method is proposed. The present results show that the gas phase distributes widely in the eccentric gas injection plus mechanical stirring tank. Therefore, the gas holdup would be increased and the better gas-liquid mixing effect can be obtained in the gas injection plus mechanical stirring case.
