Heat and mass transfer analysis of MHD stagnation point flow of carbon nanotubes with convective stretching disk and viscous dissipation

• Published in: Advances in mechanical engineering Vol. 14; no. 10; p. 168781322211283
• Main Authors: Alqahtani, Bader, Mahmood, Zafar, Alyami, Maryam Ahmed, Alotaibi, Abeer M, Khan, Umar, Galal, Ahmed M
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.10.2022; Sage Publications Ltd; SAGE Publishing
• Subjects: Biot number; Boundary layers; Brownian motion; Dissipation; Graphical representations; Heat; Heat transfer; Magnetic properties; Magnetohydrodynamics; Mass transfer; Mathematical models; Multi wall carbon nanotubes; Nanofluids; Nanoparticles; Parameters; Physical properties; Single wall carbon nanotubes; Sodium alginate; Stagnation point; Stretching; Suction; Temperature profiles; Thermophoresis; Suction; CNTS (SWCNTS and MWCNTS); stagnation point flow; convective heated disk; heat and mass transfer; magnetohydrodynamics
• ISSN: 1687-8132; 1687-8140
• DOI: 10.1177/16878132221128390

The research of single and multi-wall carbon nanotubes (SWCNTs/MWCNTs) mixed in sodium alginate-based nanofluid with MHD stagnation-point flow on a convective heated stretching disk with viscous dissipation and suction effects is being done with the intention of decoding the heat and mass transmission mechanism. It is possible to transform PDEs that govern the boundary layer into ODEs. MATLAB’s Bvp5c is used to numerically solve the revised equations. The Yamada-Ota model and the Buongiorno model are used in this work to scrutinize the flow, heat, and mass transfer parameters. The following parameters were brought up for discussion: volume fraction nanoparticle, magnetic parameter, suction, Brownian motion, thermophoresis, Lewis number, Eckert number, Biot number, stretching, and thermophoresis. This study found that nanofluid (SWCNT/sodium alginate) has a superior flow, heat, and mass transfer rate than nanofluid (MWCNT/sodium alginate). Graphical representations of the effects of various factors are shown, and a comparison of current and prior findings is given in a table. A comparison of current and previous findings reveals a 0% relative inaccuracy. The velocity ratio parameter has solutions that look close to the separation value. The performance of heat and mass transfer operations may be improved by increasing suction parameters. Increases in Brownian motion Nb and suction decrease the temperature profile, whereas increases in velocity ratio and magnetic parameters increase velocity. This research is critical for estimating flow, temperature, and concentration behavior for CNTs with incorporated physical properties.