Abstract
In this work, the influence of slip-dependent (S.D.) zeta potential on the heat transfer characteristics for power-law fluids is analyzed with consideration of overlapping electric double layer (EDL) and high zeta potential. Based on the non-linear electric potential distribution, the flow velocity, fluid temperature and convective heat transfer are discussed numerically. Results reveal that the shear-thinning fluids are more susceptible to the S.D. zeta potential as compared to Newtonian and shear-thickening fluids. The fluid temperature can be reduced obviously for shear-thinning fluids when the S.D. zeta potential is considered. However, the S.D. zeta potential has little impact on the temperature of shear-thickening fluids even for a large pressure gradient value. In addition, the convective thermal transfer is enhanced by the power-law behavior index and overlapping EDL. The present study aims to regulate the fluid temperature and enhance the convective thermal transfer by selecting appropriate salt concentration and power-law behavior index.
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