Arrhenius Activation Energy and Zero Nanoparticles Flux Effects on Free Convection Flow of a Nanofluid Past an Isothermal Elliptical Cylinder with Internal Heat Generation

• Published in: Journal of applied mechanics and technical physics Vol. 66; no. 1; pp. 20 - 31
• Main Authors: Yih, K.-A., Huang, Ch.-J.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.02.2025; Springer Nature B.V
• Subjects: Activation energy; Applications of Mathematics; Boundary conditions; Brownian motion; Chemical reactions; Classical and Continuum Physics; Classical Mechanics; Coordinate transformations; Elliptical cylinders; Energy; Flow velocity; Fluid flow; Fluid- and Aerodynamics; Fluids; Free convection; Heat generation; Heat transfer; Mathematical Modeling and Industrial Mathematics; Mechanical Engineering; Nanofluids; Nanoparticles; Numerical analysis; Nusselt number; Physics; Physics and Astronomy; Radiation; Temperature profiles; Thermophoresis; Viscosity; internal heat generation; isothermal elliptical cylinder; Arrhenius activation energy; zero nanoparticles flux; free convection; nanofluid
• ISSN: 0021-8944; 1573-8620
• DOI: 10.1134/S0021894425010067

Arrhenius activation energy, zero nanoparticles flux, and internal heat generation effects on natural convection about an isothermal cylinder of elliptic cross section filled with a nanofluid are numerically analyzed in this paper. The nanofluid model involves Brownian motion and thermophoresis effects. The boundary condition of the zero nanoparticle flux causes the results to be more realistic and useful. By using a suitable coordinate transformation, the nonsimilar governing equations are achieved and then solved by Keller box method. Performing the comparisons with previously published work obtains the good agreement. The dimensionless temperature profiles and the Nusselt number results for the main parameters are presented in graphical and tabular forms. The physical aspects of the problem are discussed in details.