Electrothermal analysis in two-layered couple stress fluid flow in an asymmetric microchannel via peristaltic pumping

Being motivated from the recent developments in biomicrofluidics, a mathematical model is presented to analyze the two-layered electrothermal flow via peristaltic propulsion of couple stress fluids caused by velocity and thermal slip conditions. An asymmetric microchannel is considered for the flow...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2021-05, Vol.144 (4), p.1325-1342
Main Authors: Ranjit, N. K., Shit, G. C., Tripathi, D.
Format: Article
Language:English
Subjects:
Analysis
Analytical Chemistry
Aqueous solutions
Asymmetry
Chemistry
Chemistry and Materials Science
Computational fluid dynamics
Electric properties
Electroosmosis
Exact solutions
Fluid flow
Heat transfer
High temperature effects
Inorganic Chemistry
Measurement Science and Instrumentation
Microchannels
Ohmic dissipation
Physical Chemistry
Polymer Sciences
Resistance heating
Slip
Thermal radiation
Thickness
Wave propagation
Wave velocity
Zeta potential
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Summary:Being motivated from the recent developments in biomicrofluidics, a mathematical model is presented to analyze the two-layered electrothermal flow via peristaltic propulsion of couple stress fluids caused by velocity and thermal slip conditions. An asymmetric microchannel is considered for the flow regime with different zeta potential moving with wave velocity. Couple stress fluid has been taken for aqueous solution to represent the non-Newtonian characteristics of physiological fluids. A lubrication approach with Debye H u ¨ ckel linearization is taken to obtain the analytical solution. Furthermore, heat transfer analysis is performed to analyze the thermal characteristics and variations in Nusselt number in the presence of thermal radiation. The study shows that the temperature reduces with increasing the electrical double layer thickness, thermal radiation, couple stress parameter, and magnitude of Brinkman number, however, it enhances with increasing the Joule heating and thermal slip effects. The rate of heat transfer enhances with Joule heating effects, while the trend is reversed due to the presence of two-layered electroosmotic flow and couple stress effect.
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-020-10380-z