Nanoparticles diameter based thermal conductivity aspects for thermal application in nanofluid flow through Riga device associated to solar radiations and convective heating

Abstract The nanofluids play an essential role in maximizing heat transport in heat‐exchanging devices or in electronics, and so forth. The promising characteristics of nanofluids significantly improve the heat transport, making them advantageous for practical applications. Thus, the goals of current work are to examine the contribution of nanoparticle diameter for thermal improvement in nanofluids over a surface formed by alternative arrangement of magnets. The thermal conductivity is estimated via Corcione's model by taking from to Then the obtained model was treated numerically. It scrutinized that higher and diminishe the velocity, and rapid declines are observed for nanofluid. Further, by providing the heat from the surface (convective condition), thermal radiation () and an increase nanoparticles boosted the temperature of under consideration fluid. The comparative analysis revealed that the nanofluid based on Corcione's model is much effective than simple fluid. Moreover, the shear drags and heat transport rate on the functional surface are computed and deliberated comprehensively. The appropriate parametric ranges for which the better primary and secondary velocity profiles and temperature profiles achieved are , , , and .