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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.2020034373
Forthcoming Article

Stability analysis on Ag-MgO/water hybrid nanofluid flow over an extending/contracting Riga wedge and stagnation

Thameem Basha H
VIT, Vellore, India
R Sivaraj
VIT University, Vellore, India
Animasaun IL
The Federal University Of Technology, Akure

Краткое описание

In some specific cases, boundary value problems provide a dual solutions in which one solution is physically realizable and stable and the other unstable. This work is performed to express the dual solutions of Ag-MgO/water hybrid nanofluid over an extending/contracting Riga wedge and stagnation point. Two solutions are observed by a limited range of extending/contracting parameter and suction/injection parameter. The detailed stability test is carried out to determine which of the two solutions is physically realizable and stable. Suitable self-similarity variables are employed to convert the fluid transport equations into ordinary differential equations which have been computed with the use of the bvp4c in MATLAB. The impacts of active parameters on flow field are illustrated with graphs. The outcome of the present result reveals that the suction/injection parameter enhances the skin friction at the Riga wedge and stagnation point for the first solution while the opposite behavior is observed for the second solution. It is noticed that the critical values increase for the given values of Ag-MgO nanoparticles volume fraction on rate of heat transfer. The modified Hartmann number declines the temperature for the first solution over a wedge and stagnation point. The stability test reveals that the first solution is stable.