Impact of multiple shapes on Al2O3−Cu/ H2O−C2H6O2 towards a permeable surface of cylinder


Rahman M., TÜRKYILMAZOĞLU M., Matloob K.

Journal of Magnetism and Magnetic Materials, vol.581, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 581
  • Publication Date: 2023
  • Doi Number: 10.1016/j.jmmm.2023.170965
  • Journal Name: Journal of Magnetism and Magnetic Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Darcy–Forchheimer, Heat transfer, Hybrid nanofluids, Shape effects, Similarity solutions, Stretchable cylinder
  • Hacettepe University Affiliated: Yes

Abstract

This research aims to investigate the thermal performance of a hybrid nanofluid consisting of aluminum oxide and copper Al2O3−Cu nanoparticles on the uniform (50%50%) flow of two different fluids such as water and ethylene glycol H2O−C2H6O2 over a permeable cylinder. To conduct the study, three different hybrid nanoparticle shapes (cylinder, brick, and blade) are taken into consideration. The momentum relationship is derived by taking into account porosity and Darcy–Forchheimers effects. Energy communication is formulated by including joule heating, radiation, and viscous dissipation effects. Boundary layer approximations are used to obtain the partial differential equations (PDEs) governing the system, which are then transformed into ordinary differential equations (ODEs) using the appropriate transformations. The equations are solved using the bvp4c MATLAB solver. The study discovers that for all nanoparticle shapes, the velocity field of the hybrid nanofluid decreases with increasing porosity parameters, Hartmann numbers, and inertia factors. The Prandtl number and stratification parameter cause the fluid temperature of the hybrid nanofluid to decrease for all shapes, whereas Eckert and Hartmann's numbers have the reverse effect. The skin friction and Nusselt numbers are also computed and presented on graphs for various nanoparticle forms.