Entropy analysis of third-grade MHD convection flows from a horizontal cylinder with slip

• Autorzy: Madhavi K. , Prasad V. R. , Gaffar S. A. , Venkatadri K.

Identyfikatory

DOI

10.24425/124490

• Języki publikacji: EN

Abstrakty

EN

In thermos fluid dynamics, free convection flows external to different geometries, such as cylinders, ellipses, spheres, curved walls, wavy plates, cones, etc., play major role in various industrial and process engineering systems. The thermal buoyancy force associated with natural convection flows can play a critical role in determining skin friction and heat transfer rates at the boundary. In thermal engineering, natural convection flows from cylindrical bodies has gained exceptional interest. In this article, we mathematically evaluate an entropy analysis of magnetohydrodynamic third-grade convection flows from permeable cylinder considering velocity and thermal slip effects. The resulting non-linear coupled partial differential conservation equations with associated boundary conditions are solved with an efficient unconditionally stable implicit finite difference Keller-Box technique. The impacts of momentum and heat transport coefficients, entropy generation and Bejan number are computed for several values of non-dimensional parameters arising in the flow equations. Streamlines are plotted to analyze the heat transport process in a two-dimensional domain. Furthermore, the deviations of the flow variables are compared with those computed for a Newtonian fluid and this has important implications in industrial thermal material processing operations, aviation technology, different enterprises, energy systems and thermal enhancement of industrial flow processes.

Słowa kluczowe

EN

third-grade viscoelastic fluid model; thermal jump; entropy generation; Bejan number; Hartmann number

PL

lepkosprężysty model cieczy trzeciego stopnia; skok termiczny; generowanie entropii; liczba Bejana; liczba Hartmanna

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Archive of Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. LXV, nr 3
• Strony: 417--440
• Opis fizyczny: Bibliogr. 56 poz., rys., tab.

Twórcy

autor

Madhavi K.

• Department of Mathematics, Madanapalle Institute of Technology and Science, Madanapalle – 517325, India

autor

Prasad V. R.

• Department of Mathematics, School of Advanced Sciences, VIT University, Vellore – 632014, Tamil Nadu, India

autor

Gaffar S. A.

• Department of Mathematics, Salalah College of Technology, Salalah, Oman

autor

Venkatadri K.

• Department of Mathematics, Vemu Institute of Technology, P. Kothakota, India

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