Anomalous imbibition of non-Newtonian fluids in porous media
作者: Xu YangYingjie LiangWen Chen
作者单位: 1Institute of Soft Matter Mechanics, College of Mechanics and Materials, Hohai University, Nanjing, Jiangsu 211100, PR China
刊名: Chemical Engineering Science, 2020, Vol.211
来源数据库: Elsevier Journal
DOI: 10.1016/j.ces.2019.115265
关键词: Anomalous imbibitionNon-Newtonian fluidFractional calculusModeling
英文摘要: Abstract(#br)The imbibition of a complex fluid in porous media often exhibits anomalous behavior, which is dominated by multiple time-spatial scales. In this work, a spatiotemporal fractional imbibition model (SFIM) is proposed to capture anomalous imbibition. The anomalous exponent and the non-Newtonian index of SFIM are introduced to characterize the heterogeneity of porous media and the nonlocality of the non-Newtonian fluid. It is found that the anomalous exponent is inversely proportional to the fractal dimension of tortuosity. The non-Newtonian index unveils the radius variation due to the interaction between the non-Newtonian fluid and the interface of porous media. In addition, the proposed model is superior to the Lucas-Washburn model (LWM) with respect to the experimental data...
全文获取路径: Elsevier  (合作)
影响因子:2.386 (2012)

  • imbibition 吸收
  • porous 多孔的
  • fluid 
  • calculus 结石
  • media 中脉