Thermally Enhanced Darcy-Forchheimer Casson-Water/Glycerine Rotating Nanofluid Flow with Uniform Magnetic Field

• Published in: Micromachines (Basel) 2021-05, Vol.12 (6), p.605
• Main Authors: Shafiq, Anum, Rasool, Ghulam, Alotaibi, Hammad, Aljohani, Hassan M, Wakif, Abderrahim, Khan, Ilyas, Akram, Shakeel
• Format: Article
• Language: English
• Subjects: Aerodynamics; Aerospace engineering; Boundary layers; Carbon; carbon nanotubes; Computational fluid dynamics; Darcy-Forchheimer theory; Fluid flow; Heat conductivity; Industrial applications; Magnetic fields; Magnetohydrodynamics; Multi wall carbon nanotubes; nanofluid; Nanofluids; Nanomaterials; Nanoparticles; Numerical analysis; Parameters; Porosity; Radial velocity; Radiation; Reynolds number; Rotating disks; Runge-Kutta method; Skin friction; Temperature profiles; Thermal radiation; Velocity distribution
• ISSN: 2072-666X; 2072-666X
• DOI: 10.3390/mi12060605

This numerical study aims to interpret the impact of non-linear thermal radiation on magnetohydrodynamic (MHD) Darcy-Forchheimer Casson-Water/Glycerine nanofluid flow due to a rotating disk. Both the single walled, as well as multi walled, Carbon nanotubes (CNT) are invoked. The nanomaterial, thus formulated, is assumed to be more conductive as compared to the simple fluid. The properties of effective carbon nanotubes are specified to tackle the onward governing equations. The boundary layer formulations are considered. The base fluid is assumed to be non-Newtonian. The numerical analysis is carried out by invoking the numerical Runge Kutta 45 (RK45) method based on the shooting technique. The outcomes have been plotted graphically for the three major profiles, namely, the radial velocity profile, the tangential velocity profile, and temperature profile. For skin friction and Nusselt number, the numerical data are plotted graphically. Major outcomes indicate that the enhanced Forchheimer number results in a decline in radial velocity. Higher the porosity parameter, the stronger the resistance offered by the medium to the fluid flow and consequent result is seen as a decline in velocity. The Forchheimer number, permeability parameter, and porosity parameter decrease the tangential velocity field. The convective boundary results in enhancement of temperature facing the disk surface as compared to the ambient part. Skin-friction for larger values of Forchheimer number is found to be increasing. Sufficient literature is provided in the introduction part of the manuscript to justify the novelty of the present work. The research greatly impacts in industrial applications of the nanofluids, especially in geophysical and geothermal systems, storage devices, aerospace engineering, and many others.