Effects of Dufour and Soret mechanisms on MHD mixed convective-radiative non-Newtonian liquid flow and heat transfer over a porous sheet. (1st May 2020)

• Record Type: Journal Article
• Authors: Mahabaleshwar, U.S.; Nagaraju, K.R.; Vinay Kumar, P.N.; Nadagouda, M.N.; Bennacer, R.; Sheremet, M.A.
• Is Part Of: Thermal science and engineering progress. Volume 16(2020)
• Publication Date: 2020-05-01
• Subjects: Mixed convection -- Viscoelastic fluid -- Thermal radiation -- Inclined magnetic field -- Heat and mass transfer; Heat engineering -- Periodicals; Heat engineering; Thermodynamics; Periodicals; 621.402
• DOI: 10.1016/j.tsep.2019.100459
• Languages: English
• ISSNs: 2451-9049

Abstract

Highlights: The solution was obtained for Walters' liquid B/second order liquid subjected to thermal radiation with Dufour-Soret effects. The similarity transformations were adapted to the complex case. The increase in radiation number results in the increased thermal boundary layer thickness. The magnetic field inclination angle allows controlling the velocity, thermal and concentration boundary layers. Abstract: The mixed convection heat transfer combined with thermal radiation of a viscoelastic liquid circulation driven by a porous accelerating sheet under the inclined uniform magnetic field impact is studied. The considered phenomenon is modeled by the set of nonlinear differential equations affected by the boundary conditions. These equations are reduced into coupled nonlinear ordinary differential equations with the proper choice of similarity transformations. Further, the analytical solution is determined for transformed system. Also, the governing equations and the solutions are obtained for all considered functions. The temperature distribution impacted by the thermal radiation is very important in industrial fields as in accelerating sheet where cooling of the liquid plays a vital role in obtaining the desired outcome. In engineering applications like extrusion processes, metal spinning, dye casting of metals and polymer production this type of flow problem exists and where the maximum temperature and difference prediction should be controlled. Analysis has been performed for a wide range of radiation number (0 ≤ Nr ≤ 1), Richardson number (0.5 ≤ Λ ≤ 6), and magnetic field inclination angle (0 ≤ τ ≤ π/2).