NON-SIMILAR KELLER BOX ANALYSIS OF MAGNETO-CHEMICALLY RADIATIVE BUONGIORNO'S NANOFLUID FLOWS PAST A STRETCHING SURFACE

Anjum, Asra; Abdul Gaffar, S; Kumar, D Sateesh; Beg, Osman

Abstract

A non-similar Keller Box analysis of magneto-chemically radiative Buongiorno's nanofluid flows past a stretched surface is presented in this work which offers new insights for raising the effectiveness of heat, mass transmission achieved with nanofluids. Numerous scholars have examined various topics, including radiation, porosity, aligned magnetic fields, mixed convection, and the Forchheimer (non-Darcy) effect in nanofluid flows. However, thermal radiation impact, chemical reaction, and magnetic parameter effects on the Buongiorno's nanofluid flow from a stretching sheet has not received significant attention within existing scholarly works. To fill in this knowledge vacuum and provide insightful information about these variables, this investigation uniquely encompasses coupled magnetic properties, chemical reactions, thermal radiation effects on heat and mass transmission in nanofluids, assimilating Brownian motion, buoyancy ratio and thermophoresis, offering a comprehensive multi-physics analysis which was not previously explored. By employing the Keller Box method (KBFDM), after being converted into a set of nonlinear ODE's, from the PDE's that govern the flow analysis are solved numerically, MATLAB is utilized to obtain graphs and tabular values. The effects of elements without dimensions, such as heat radiation (0 ≤ R ≤ 1), chemical reaction (0 ≤ Kr ≤ 5), magnetism parameter (0 ≤ M ≤ 2) on concentration, temperature and velocity distributions are discussed. Additionally, Nusselt number, Sherwood number, Skin friction impacts are demonstrated. Velocity depreciates with elevating magnetic parameters. The velocity field experiences a significant boost in response to rising thermal radiation and chemical reaction values. Greater magnetic field causes the concentration profile to raise steadily of nanoparticles. Moreover, as (Kr) raises steadily velocity appreciates however, temperature and concentration diminish substantially. When magnetic parameter (M) rises, the Schmidt number (Sc) and skin friction decays. Skin friction and Sherwood number shows an upward trend for myriad increasing values of thermophoresis (Nt). Present study shows a compatibility rate of 99.9% with the previous research across different values of Nusselt (Nu) and Sherwood (Sh) numbers. Significantly, higher (Pr) enhances (Cf) & (Sh) because of thicker thermal and thinner momentum boundary layers, while decreasing the (Nu) to inhibited heat transfer. It is noteworthy that, increasing (Sc) elevates (Cf), (Nu) & (Sh) by enhancing fluid viscosity and reducing mass diffusivity, that causes concentration within BL to thicken, improves shear stress and heat transfer efficiency. Through this work, significant knowledge concerning how to boost productivity of chemical processing and in thermal control mechanisms magnetic, radiative environments involving nanofluids can be gained for industrial processes.

• Journal Article Type: Article
• Acceptance Date: Oct 22, 2024
• Deposit Date: Oct 25, 2024
• Journal: Journal of Naval Architecture and Marine Engineering
• Peer Reviewed: Peer Reviewed
• Keywords: Buongiorno's Nanofluid model; Stretching Surface; Power-Law variation; Brownian motion; Thermophoresis; Skin Friction; Nusselt number; Sherwood number; Finite difference technique