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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN Печать: 1940-2503
ISSN Онлайн: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2020033860
Forthcoming Article

COMPUTATION OF EYRING-POWELL MICROPOLAR CONVECTIVE BOUNDARY LAYER FLOW FROM AN INVERTED NON-ISOTHERMAL CONE: THERMAL POLYMER COATING SIMULATION

Abdul Gaffar Shaik
Salalah College of Technology
Hidayathulla Khan B.Md.
Sir Vishveshwaraiah Institute of Science and Technology
Osman Anwar Beg
Gort Engovation-Aerospace, Medical and Energy Engineering, Gabriel's Wing House, 15Southmere Avenue, Bradford, BD73NU, United Kingdom
Ali Kadir
University of Salford
Ramesh Reddy P
Madanapalle Institute of Science and Technology

Краткое описание

Thermal coating of components with non-Newtonian materials is a rich area of chemical and process mechanical engineering. Many different rheological characteristics can be simulated for such coatings with a variety of different mathematical models. In this work we study the steady-state coating flow and heat transfer of a non-Newtonian liquid (polymer) on an inverted isothermal cone with variable wall temperature. The Eringen micropolar and three-parameter Eyring-Powell models are combined to simulate microstructural and shear characteristics of the polymer. The governing partial differential conservation equations and wall and free stream boundary conditions are rendered into dimensionless form and solved computationally with the Keller-Box finite difference method (FDM). Validation with earlier Newtonian solutions from the literature is also included. Graphical and tabulated results are presented to study the variations of fluid velocity, micro-rotation (angular velocity), temperature, skin friction, wall couple stress (micro-rotation gradient) and wall heat transfer rate. The present numerical simulations find applications in thermal polymer coating operations and industrial deposition techniques and provide a useful benchmark for more general computational fluid dynamics (CFD) simulations.