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Heat transfer of ethylene glycol-Fe3O4 nanofluid enclosed by curved porous cavity including electric field

Authors: 

Truong Khang Nguyen, Feroz Ahmed Soomro, Jagar A. Ali, Rizwan Ul Haq, M. Sheikholeslami, Ahmad Shafee

Source title: 
Physica A: Statistical Mechanics and its Applications, 550: 123945, 2020 (ISI)
Academic year of acceptance: 
2019-2020
Abstract: 

In current model, a complete structured of thermal behavior within a permeable curved domain is discussed in the appearance of Ethylene glycol based Fe3O4 nanofluid. Electrohydrodynamic (EHD), that is an electric force inside a porous space is also simulated. Radiative source term has been introduced and Fe3O4 nanoparticles with different shapes namely: Platelet, bricks, cylinder and spherical are dispersed within the base fluid. The systems of Partial differential equations (PDEs) are solved through CVFEM. It is further described that bottom electrode is movable. Electric field and nanoparticles’ shape are two factors for changing properties of nanofluid. Impacts of permeability, voltage, radiation parameters and nanoparticles’ shape on stream lines, isotherms, Nusselt number have been demonstrated. Ranges of defined parameters are retained which are: voltages (0 ≤ Δφ ≤ 10) KV, Darcy number (10Da ≤105), nanoparticles’ shape(3 ≤ m ≤ 5.7) and radiative factor (0 ≤ Rd ≤ 0.8). Outcomes displayed that convection augments with rise of Da. Convective flow becomes stronger as a consequence of adding greater voltage.