Propagation of slow/fast-mode solitary liquid waves in trickle beds via electrical capacitance tomography and computational fluid dynamics
Propagation of slow/fast-mode solitary liquid waves in trickle beds via electrical capacitance tomography and computational fluid dynamics
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DOI：
10.1016/j.ces.2009.09.069
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发表时间：
2010-02
影响因子：
4.7
通讯作者：
A. Atta;M. Hamidipour;Shantanu Roy;K. Nigam;F. Larachi
中科院分区：
文献类型：
--
作者：
A. Atta;M. Hamidipour;Shantanu Roy;K. Nigam;F. Larachi
利用电容层析成像技术对滴流床反应器中长、短孤立波的行为进行了跟踪研究。波的传播和衰减的定量描述，试图使用一个简化的两相欧拉计算流体动力学建模跟踪长脉冲和短脉冲中遇到的慢模式和快模式的循环操作策略。结果断言慢模式操作的功效，因为波试图保持其身份，而在床上传播。相反，在快速模式循环操作的情况下，衰减时间段延长，并且继续沿着反应器长度衰减。在这项工作中应用的预测计算模型，尽管有许多简化，符合可以说与实验观察。
Electrical capacitance tomography was used to follow the behavior of long and brief solitary liquid-rich waves in a trickle-bed reactor. A quantitative description of wave propagation and attenuation was attempted using a simplified two-phase Eulerian computational fluid dynamics modeling by tracking long and brief pulses as encountered in slow- and fast-mode cyclic operation strategies. The results assert the efficacy of slow mode operation since the wave attempts to preserve its identity while propagating in the bed. On the contrary, the decay time period in case of fast mode cyclic operation is prolonged and continues to attenuate down the reactor length. The predictive computational model applied in this work, in spite of many simplifications, conforms arguably well with the experimental observations.