کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4982303 | 1453855 | 2017 | 7 صفحه PDF | دانلود رایگان |
- Slip modulated micropumping of non-Newtonian/Newtonian binary fluid system.
- Combined influences of pressure gradient and electrical forcing on flow dynamics.
- Complex effect of interfacial slip on the underlying binary fluid transport.
- Nonlinear interactions between fluid rheology and the interfacial slip.
- Augmentation in the flow rate over characteristic regimes of interest.
In this study, we report the consequences of the fluid/wall slippage on the micro-pumping of an immiscible binary system constituted by conducting (non-Newtonian) and non-conducting (Newtonian) fluid pair through a microchannel. We consider power-law model to represent the constitutive behaviour of the non-Newtonian fluid. We explore the effect of the combined influences of the applied pressure gradient and electrical forcing on micro-pumping by analytical calculations considering a flat interface between the fluids. We highlight the alteration in underlying dynamics, mainly attributable to the rheology driven modification in viscous resistance in the field as modulated by the interfacial slip and electrical double layer effect. Also, we establish a phenomenal amplification in micro-pumping effect, as realised through an enhanced volumetric flow rate though the channel under combined forcings environment. We believe that the inferences obtained from this analysis may improve the design of various bio-microfluidic devises/systems, which are often used for the transportation of binary layers including one non-Newtonain fluid in the system.
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Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 518, 5 April 2017, Pages 166-172