Enhanced thermal effectiveness for electroosmosis modulated peristaltic flow of modified hybrid nanofluid with chemical reactions

Abstract

In this analysis, the thermal and flow properties of modified hybrid nanofluids (MNFs) have been investigated under the effects of electroosmosis and homogeneous-heterogeneous chemical reactions. Three types of nanoparticles of Cu, CuO, and Al2O3 are utilized to monitor the performance of the MNFs with water as a working liquid. The determination of the heating phenomenon is explored by incorporating the effects of NPs shape, temperature reliant viscosity, Joule heating, heat generation/absorption and viscous dissipation. In this exploration, equal diffusion factors for the auto catalyst and reactants are assumed. The model formulation contains a highly non-linear PDE system, which is converted to ODEs under physical assumptions with lubrication and Debye–Huckel. The solution treatment involves the Homotopy perturbation method for solving the governing differential equations is used. A major outcome discloses that an addition in heterogeneous reaction parameter aids in enhancing the concentration profile. In a result, the temperature curve decreases at increasing volume fraction of the NPs. Modified hybrid NFs have higher heat transfer rate as compared to base H20, or ordinary Al2O3–H20 and hybrid Cu + Al2O3–H20 NFs. Pressure gradient decreases by improving electroosmotic parameter. Further a comparison between analytically (HPM) and numerical results (NDSolve) show that both results are in good agreement.

Peristaltic rheology and thermal analysis of SWCNT-MWCNT/H2O hybrid nanofluid in a complex microchannel under electroosmotic effects

“…The NS equations associated to the rheology of hybrid fluid through an asymmetric micro-channel via peristaltic pumping and electro-osmotic phenomena in term of Cartesian coordinates are [24][25][26] :…”

“…They have simplified the rheological equations under biological phenomena and Debye-Hu¨ckel linearization (DHL). Hussain et al 24 Additionally, thermal enhancement is predicted by increasing concentration of both nanoparticles under electric field. The outcomes of their flow analysis are useful in the thermal energy systems.…”

“…They have simplified the rheological equations under biological phenomena and Debye–Hückel linearization (DHL). Hussain et al 24 discussed the influence of chemical reaction and electric force on the peristaltic motion of hybrid fluid. They have used three distinct nanoparticles of A l 2 O 3 , CuO & Cu in their rheological analysis under lubrication theory.…”