Unsteady hybrid-nanofluid flow comprising ferrousoxide and CNTs through porous horizontal channel with dilating/squeezing walls

Abstract

The key objective of the present research is to examine the hybrid magnetohydrodynamics (MHD) nanofluid (Carbon-nanotubes and ferrous oxide–water) CNT–Fe3O4/H2 flow into a horizontal parallel channel with thermal radiation through squeezing and dilating porous walls. The parting motion is triggered by the porous walls of the channel. The fluid flow is time-dependent and laminar. The channel is asymmetric and the upper and lower walls are distinct in temperature and are porous. With the combination of nanoparticles of Fe3O4 and single and multi-wall carbon nanotubes, the hybrid nanofluid principle is exploited. By using the similarity transformation, the set of partial differential equations (PDEs) of this mathematical model, governed by momentum and energy equations, is reduced to corresponding ordinary differential equations (ODEs). A very simple numerical approach called the Runge–Kutta system of order four along with the shooting technique is used to achieve the solutions for regulating ODEs. MATLAB computing software is used to create temperature and velocity profile graphs for various emerging parameters. At the end of the manuscript, the main conclusions are summarized. Through different graphs, it is observed that hybrid-nanofluid has more prominent thermal enhancement than simple nanofluid. Further, the single-wall nanotubes have dominated impact on temperature than the multi-wall carbon nanotubes. From the calculations, it is also noted that Fe2O3–MWCNT–water has an average of 4.84% more rate of heat transfer than the Fe2O3–SWCNT–water. On the other hand, 8.27% more heat flow observed in Fe2O3–SWCNT–water than the simple nanofluid. Such study is very important in coolant circulation, inter-body fluid transportation, aerospace engineering, and industrial cleaning procedures, etc.

Numerical Analysis of Unsteady Hybrid Nanofluid Flow Comprising CNTs-Ferrousoxide/Water with Variable Magnetic Field

“…The distance between two plates has taken as h(t) = l √ 1 − at; furthemore, the upper plate move towards the lower plate with velocity v = dh dt . We Continuity equation [15]:…”

“…Hayat et al [13] examined the impact of couple stress fluid flow in the presence of the time-dependent magnetic field. Hayat et al both [14,15] used the Buongiorno model of nanofluids, which indirectly tested certain nanoparticles. In the meantime, Salehi et al [16] studied the squeezing hybrid nanofluid which can be formulated by putting the nanomaterial Fe 3 O 4 -MoS 2 in the base fluid water and ethylene glycol.…”

“…[20] investigated the free convection of hybrid nanofluid in the eccentric annulus of horizontally cylindrical shape. Bilal and Taseer et al [14,15] studied the (MHD) hybrid nanofluids (CNT-Fe 3 O 4 /H 2 O) motion between horizontal channels through dilating and squeezing walls with thermal radiation. The flow is transient and laminar.…”

Dissipated electroosmotic EMHD hybrid nanofluid flow through the micro-channel

“…Hybrid nanofluids improve the materials’ physical and chemical properties at the same time. As compared to simple nanofluids 30 – 33 , the hybrid nanofluids 34 – 39 have more effect on the betterment of heat transfer because they have more thermal conductivity and can be molded according to the requirement. Synthetic hybrid nanofluids demonstrate unusual properties that are not presented by individual components.…”

Numerical simulation of unsteady ethylene glycol/CNTs micropolar nanofluid flow through a squeezing channel: An approach to industrial applications

“…Shah et al 34 studied the microstructure characteristics of MHD suspended CNT nanofluid flow and noted the Eckert number accelerates the kinetic energy of molecules. An unsteady hybrid nanofluid flow of CNTs has been examined by Bilal et al 35 Later many researchers work in this direction. [36][37][38] The present problem addresses a comparative study on the results, found by a developed algorithm of HAM and Rabin-Karp (RK) method with shooting technique.…”