Numerical investigation of heat transfer characteristics for blood/water-based hybrid nanofluids in free convection about a circular cylinder

This paper investigates hybrid nanofluids flowing around a circular cylinder of free convection under the constant surface heat flux. Nanoparticles copper oxides, Gold, and Aluminum (CuO, Au, Al) are considered to support transfer performance blood/water-based nanofluids. The governing model for which is in form non-linear partial differential equations (PDEs) first transformed more convenient by similarity transformation approach then approximated numerically Keller box method. Several comparatives performed this work resulting superiority hybrid-nanofluid over regular nanofluid terms rate, velocity, local skin friction coefficient. Findings confirmed that temperature field augmented, with increasing volume fraction nanoparticles. Also, Gold nanoparticles give higher result all examined physical properties than oxides