Heat transfer by natural convection from a heated square inner cylinder to its elliptical outer enclosure utilizing nanofluids

• Autorzy: Bouras Abdelkrim , Taloub Djedid , Driss Zied , Debka Siham

Identyfikatory

DOI

10.2478/ijame-2022-0017

• Języki publikacji: EN

Abstrakty

EN

In this paper a numerical study of natural convection of stationary laminar heat transfers in a horizontal ring between a heated square inner cylinder and a cold elliptical outer cylinder is presented. A Cu-water nanofluid flows through this annular space. Different values of the Rayleigh number and volume fraction of nanoparticles are studied. The system of equations governing the problem was solved numerically by the fluent calculation code based on the finite volume method and on the Boussinesq approximation. The interior and exterior surfaces are kept at constant temperature. The study is carried out for Rayleigh numbers ranging from 310 to 510. We have studied the effects of different Rayleigh numbers and volume fraction of nanoparticles on natural convection. The results are presented as isotherms, isocurrents, and local and mean Nusselt numbers. The aim of this study is to study the influence of the thermal Rayleigh number and volume fraction of nanoparticles on the heat transfer rate.

Słowa kluczowe

EN

natural convection; Rayleigh number; nanofluid; volume fraction; square elliptical

PL

konwekcja naturalna; nanociecz; ułamek objętościowy

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2022
• Tom: Vol. 27, no. 2
• Strony: 22--34
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wykr.

Twórcy

autor

Bouras Abdelkrim

• Department of Physics, Faculty of Sciences, University Mohamed Boudiaf of M’sila, ALGERIA

autor

Taloub Djedid

• Department of Physics, Faculty of Sciences, University Mohamed Boudiaf of M’sila, ALGERIA
• Laboratory of Materials Physics and its Applications, University Mohamed Boudiaf of M’sila, ALGERIA

autor

Driss Zied

• Department of Mechanics, Electromechanical Systems Laboratory, University of Sfax, (ENIS), TUNISIA

autor

Debka Siham

• Department of Physics, Faculty of Sciences University Mohamed Boudiaf of M’sila, ALGERIA

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)