Numerical study of rotating electro-osmotic flow of double layers with a layer of fractional second-order fluid in a microchannel. (January 2021)

• Record Type: Journal Article
• Authors: Cao, Limei; Zhang, Peipei; Li, Botong; Zhu, Jing; Si, Xinhui
• Is Part Of: Applied mathematics letters. Volume 111(2020)
• Publication Date: 2021-01
• Subjects: Rotating electro-osmotic flow -- Fractional second-order fluid -- Viscoelastic fluid -- Reverse flow; Applied mathematics -- Periodicals; 519.05
• DOI: 10.1016/j.aml.2020.106633
• Languages: English
• ISSNs: 0893-9659

Abstract

Abstract: In order to study the mass separation or mixture of EOF for biological or chemical fluids with viscoelastic characteristics, the EOF of two layers consisting of Newtonian fluid and fractional second-order fluid in a rotating frame in parallel microchannel is investigated. The numerical solutions are obtained by finite difference method. Two interesting phenomena can be found. One of them is that reverse flow can be found near the interface as the rotation velocity is big enough. Another is that the streamwise velocity will increase firstly and decrease subsequently before the steady flow reaches on account of the existence of angular velocity.