Abstract
In this work, pressure drop assisted electrokinetic flow in a microchannel with asymmetric wall zeta potentials is studied. Both walls may have wall zeta potentials of the same sign or may have opposite signs. The Debye–Huckel approximation has been used to solve the equations analytically and closed-form solutions have been obtained. Friction factor increases with asymmetry in the wall zeta potentials and walls with opposite signs have larger friction factors than walls with similar signs. The analytical solution obtained for the friction factor showed that the scaled friction factor is independent of the mechanism generating the flow. Nusselt numbers also show a similar trend with wall zeta potentials. Nusselt numbers for pure electrokinetic flows are larger as compared to Nusselt numbers with pressure-assisted electrokinetic flows.
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Sailaja, A., Sreenivasulu, B., Srinivas, B., Ramesh, K.V. (2019). Flow and Heat Transfer Characteristics in a Microchannel with Asymmetric Wall Zeta Potentials. In: Panda, G., Satapathy, S., Biswal, B., Bansal, R. (eds) Microelectronics, Electromagnetics and Telecommunications. Lecture Notes in Electrical Engineering, vol 521. Springer, Singapore. https://doi.org/10.1007/978-981-13-1906-8_74
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DOI: https://doi.org/10.1007/978-981-13-1906-8_74
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