Prediction of Transient Bed Height in Batch Sedimentation at Large Times
Prediction of Transient Bed Height in Batch Sedimentation at Large Times
复制标题
大批量间歇沉降过程中瞬态床高的预测
DOI：
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发表时间：
2006
期刊：
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通讯作者：
L. White
中科院分区：
文献类型：
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作者：
S. Usher;P. Scales;L. White
颗粒泥浆在工业沉淀池和实验室批量沉淀试验中的沉淀很难用分析方法描述。在推断现有的沉降数据以预测最终范围和需要多长时间时，了解长期沉降行为特别重要。本文导出了一个简单的解析方程来描述间歇沉降过程中的最后一个压缩阶段。此外，数值方法确定的方程参数已被提出和证明。通过与有限元预测值的比较，验证了解析方程和确定的参数的有效性。这种新的知识有可能显着减少预测长时间批次沉降行为的计算时间要求。© 2005美国化学工程师学会AIChE J，2006
Sedimentation of particulate slurries in industrial sedimentation ponds and laboratory-based batch settling tests is difficult to describe analytically. Understanding long-time settling behavior is of particular importance when extrapolating existing sedimentation data to predict the final extent and how long it will take. A simple analytical equation has been derived to describe the final stage of compression in batch settling. In addition, numerical methods for determining the equation parameters have been proposed and demonstrated. The validity of the analytical equation and the parameters determined has been verified by comparison with finite element predictions. This new knowledge has the potential to significantly reduce the computational time requirements of predicting long-time batch settling behavior. © 2005 American Institute of Chemical Engineers AIChE J, 2006