Magnetized mixed convection hybrid nanofluid with effect of heat generation/absorption and velocity slip condition. Issue 2 (February 2023)

• Record Type: Journal Article
• Authors: Asghar, Adnan; Chandio, Abdul Fattah; Shah, Zahir; Vrinceanu, Narcisa; Deebani, Wejdan; Shutaywi, Meshal; Lund, Liaquat Ali
• Is Part Of: Heliyon. Volume 9:Issue 2(2023)
• Publication Date: 2023-02
• Subjects: MHD -- Hybrid nanofluid -- Heat generation/absorption -- Exponentially shrinking surface -- Velocity slip condition -- Mixed convection; Research -- Periodicals; Medical sciences -- Periodicals; Natural history -- Periodicals; Social sciences -- Periodicals; Earth sciences -- Periodicals; Physical sciences -- Periodicals; 507.2
• DOI: 10.1016/j.heliyon.2023.e13189
• Languages: English
• ISSNs: 2405-8440

Abstract

Abstract: Through a vertically shrinking sheet, a two-dimensional magnetic nanofluid is numerically analyzed for convection, heat generation and absorption, and the slip velocity effect. In this research, Al2 O3 –Cu/water composite nanofluid is studied, where water is deemed the base liquid and copper (Cu) and alumina (Al2 O3 ) are the solid nanoparticles. Modern composite nanofluids improve heat transfer efficiency. Using the Tiwari-Das model, the current study examines the effects of the solid volume fraction of copper, heat generation/absorption, MHD, mixed convection, and velocity slip parameters on velocity and temperature distributions. Introducing exponential similarity variables converts nonlinear partial differential equations (PDEs) to ordinary differential equations (ODEs). MATLAB bvp4c solver is used to solve ODEs. Results showed dual solutions for suction with 0%–10% copper nanoparticles and 1%–500% heat generation/absorption. As copper (Cu) solid volume percentage increases from 0% to 10%, reduced skin friction f ″ ( 0 ) boosts in the first solution but falls in the second. When Cu is added to both solutions, heat transport − θ ′ ( 0 ) decreases. As heat generation/absorption increases 1%–500%, − θ ′ ( 0 ) decreases in both solutions. In conclusion, solution dichotomy exists when suction parameter S ≥ S c i in assisting flow case, while no fluid flow is possible when S < S c i .