Hydromagnetic non‐Newtonian nanofluid transport phenomena from an isothermal vertical cone with partial slip: Aerospace nanomaterial enrobing simulation

• Published in: Heat transfer, Asian research Vol. 47; no. 1; pp. 203 - 230
• Main Authors: Annasagaram, Subba Rao, CH, Amanulla, N, Nagendra, M, Surya Narayana Reddy, Bég, O. Anwar
• Format: Journal Article
• Language: English
• Published: 01.01.2018
• Subjects: Casson viscoplastic model; heat transfer; Keller‐box numerical method; magnetic nanofluid; nanoparticles; partial slip condition; species diffusion; steady flow
• ISSN: 1099-2871; 1523-1496
• DOI: 10.1002/htj.21299

In this article, the combined magneto‐hydrodynamic heat, momentum, and mass (species) transfer in external boundary layer flow of Casson nanofluid from a vertical cone surface with convective conditions under an applied magnetic field is studied theoretically. The effects of Brownian motion and thermophoresis are incorporated in the model in the presence of both heat and nanoparticle mass transfer convective conditions. The governing partial differential equations (PDEs) are transformed into highly nonlinear, coupled, multidegree, nonsimilar PDEs consisting of the momentum, energy, and concentration equations via appropriate nonsimilarity transformations. These transformed conservation equations are solved subject to appropriate boundary conditions with a second‐order, accurate finite difference method of the implicit type. The influences of the emerging parameters, that is, magnetic parameter (M), Casson fluid parameter (β), Brownian motion parameter (Nb), thermophoresis parameter (Nt), Lewis number (Le), Prandtl number (Pr), velocity slip (Sf) and thermal slip (ST) on velocity, temperature, and nanoparticle concentration distributions is illustrated graphically and interpreted at length. Validation of solutions with a Nakamura tridiagonal method has been included. The study is relevant to enrobing processes for electrically conductive nanomaterials, of potential use in aerospace and other industries.