Investigation of Thermal Transport in Multi-Shaped Cu Nanomaterial-Based Nanofluids

• Main Authors: Adnan, Syed Zulfiqar Ali Zaidi, Umar Khan, Thabet Abdeljawad, Naveed Ahmed, Syed Tauseef Mohyud-Din, Ilyas Khan, Kottakkaran Sooppy Nisar
• Format: Article
• Language: English
• Published: MDPI AG 2020-06-01
• Series: Materials
• Subjects: heat transfer; thermal conductivity; nanoparticles; shear stresses; RK scheme; HAM
• Online Access: https://www.mdpi.com/1996-1944/13/12/2737

The unsteady flow of H₂O saturated by tiny nanosized particles with various shapes (platelets, blades, cylinders, and bricks) over a thin slit is reported. For this novel analysis, the influences of the magnetic field and heat generation/absorption are incorporated into the governing model. The dimensionless nanofluid model is attained after the successful implementation of similarity transformations. Then, Runge-Kutta and homotopy analysis algorithms are implemented for mathematical analysis, and the results are obtained by varying the main flow parameters. A decrease in nanofluid motion is observed for a stronger magnetic field (M). Additionally, nanofluid temperature β(η) increases for higher values of M. Decreasing trends in the shear stresses Re_x^0.5C_Fx are observed for the unsteadiness parameter S, and this declines with stronger M. Similarly, the local heat transfer rate Re_x^−0.5N_ux rises with the unsteady behavior of the fluid. It is observed that the nanofluid motion drops for variable thickness (<inline-formula> <math display="inline"> <semantics> <mi>λ</mi> </semantics> </math> </inline-formula>) of the slit, whereas the motion becomes slower with stronger magnetic field effects (M).