Non-similar solution of hybrid nanofluids over a curved stretching surface with sensitivity analysis

Abstract

The goal of this study is ex the sensitivity analysis and nonsimilar solution of MHD transport of hybrid nanofluids across a curved stretched surface. Furthermore, analysis of variance (ANOVA) and response surface methodology (RSM) are also performed for friction and Nusselt number. In addition, nano-particles of aluminum oxide (Al2O3) and iron oxide (Fe3O4) are used, with water (H2O) serving as the base fluid. Fluid resistance, joule heating, and heat transfer are the three types of irreversibility that affect the entropy rate. The conversion of PDEs to ODEs is accomplished by employing the local non-similarity method up to 2nd order truncations. The Bvp4c is used to numerically solve the simulations of dimensionless nonlinear systems. The results of temperature, velocity, Bejan, and entropy profiles, are given in detail. The results show that increasing the volume friction coefficient of hybrid and nanofluids increases the Bejan number and entropy production. Hybrid nanofluids' volume friction coefficient improves heat transfer rate faster than single nanofluids. Furthermore, hybrid nanofluids have greater impacts on the entropy production and Bejan number as compared to single nanofluids near the boundary. The local buoyancy parameter and radiation parameter are the most sensitive parameters as compared to other parameters for the skin friction and local Nusselt number, respectively.

Keywords

• Non-similarity transformation
• Curved stretching surface
• Thermal radiation, nanofluid