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Micromachines 2019, 10(1), 34; https://doi.org/10.3390/mi10010034

Heat Transport of Electrokinetic Flow in Slit Soft Nanochannels

School of Mathematical Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, China
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Received: 26 November 2018 / Revised: 28 December 2018 / Accepted: 31 December 2018 / Published: 7 January 2019
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Abstract

Soft nanochannels are defined as nanochannels with a polyelectrolyte layer (PEL) on the rigid walls. In the present study, the thermal transport properties of the fluids through slit soft nanochannels are investigated under the combined influences of pressure-driven and streaming potential. Based on the analytical solutions of electric potential and velocity distributions, a dimensionless temperature of electrolyte solution in soft nanochannels is obtained by resolving the energy equation. Then, a finite difference method is used to compute the energy equation and test the validity of the analytical solution. Results show that the temperature increases with the decrease of dimensionless velocity and the heat transfer rate for rigid nanochannel are higher than that for the soft one. Moreover, we find the total entropy generation decreases with the increases of the ratio Kλ of the electrical double layer (EDL) thickness in PEL to the EDL thickness on the solid wall. View Full-Text
Keywords: slit soft nanochannels; streaming potential; thermal transport; entropy generation slit soft nanochannels; streaming potential; thermal transport; entropy generation
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Wang, Z.; Jian, Y. Heat Transport of Electrokinetic Flow in Slit Soft Nanochannels. Micromachines 2019, 10, 34.

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