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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.244 SNIP: 0.434 CiteScore™: 0.7

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

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2019022723
Forthcoming Article

MHD free convection of nanofluids in a flexible sided trapezoidal cavity

Fatih Selimefendigil
Celal Bayar University

Краткое описание

Natural convection in CuO-water nanofluid filled trapezoidal cavity having flexible side walls under the effect of inclined magnetic field was numerically investigated. The side walls of the trapezoidal cavity are adiabatic while top and bottom walls are at constant temperatures. The governing equations are solved with finite element method. The effects of the Rayleigh number (between $10^4$ and $10^6$ ), inclination angle of the side walls (between 10$^0$ and 60$^0$), elastic modulus of the flexible side wall (between 500 and $10^5$), Hartmann number (between 0 and 40), inclination angle of the magnetic field (between $0^o$ and $90^o$) and solid volume fraction of the nanoparticle (between 0 and 0.04) on the fluid flow and heat transfer characteristics were studied. As the value of the Rayleigh number, inclination angle of the side wall and nanoparticle volume fraction increase, local and averaged heat transfer enhance. Local and averaged Nusselt number generally reduces with increasing values of Hartmann number. An optimum magnetic inclination angle is found to reach the maximum averaged heat transfer which depends on the inclination angle of the side wall. The influence of the elastic modulus of the flexible side wall on the heat transfer strongly depends on the inclination angle of the side wall.