Rotating flow of Ag-CuO/H2O hybrid nanofluid with radiation and partial slip boundary effects

Hayat, T.; Nadeem, S.; Khan, Arif Ullah

doi:10.1140/epje/i2018-11682-y

Cited by 184 publications

(87 citation statements)

References 40 publications

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“…In the same year, the 3D magnetohydrodynamics MHD flow of hybrid nanofluid was considered by Devi and Devi [24], and their numerical results coincided with the experimental results obtained by Suresh et al [15]. Because of these encouraging findings, the newly found thermophysical properties have been considered by many researchers in their studies, such as Das et al [25], Mehryan et al [26], Chamkha et al [27], Hayat et al [28], Saba et al [29], Kumar and Sarkar [30], Kassai [31], and Ghalambaz et al [32]. Recently, Waini et al [33] considered the unsteady flow of hybrid nanofluid, by mixing copper and alumina (nanoparticles) with water (base fluid).…”

Section: Introductionmentioning

confidence: 56%

Dual Solutions and Stability Analysis of Magnetized Hybrid Nanofluid with Joule Heating and Multiple Slip Conditions

et al. 2020

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This paper investigates the steady, two dimensional, and magnetohydrodynamic flow of copper and alumina/water hybrid nanofluid on a permeable exponentially shrinking surface in the presence of Joule heating, velocity slip, and thermal slip parameters. Adopting the model of Tiwari and Das, the mathematical formulation of governing partial differential equations was constructed, which was then transformed into the equivalent system of non-linear ordinary differential equations by employing exponential similarity transformation variables. The resultant system was solved numerically using the BVP4C solver in the MATLAB software. For validation purposes, the obtained numerical results were compared graphically with those in previous studies, and found to be in good agreement, as the critical points are the same up to three decimal points. Based on the numerical results, it was revealed that dual solutions exist within specific ranges of the suction and magnetic parameters. Stability analysis was performed on both solutions in order to determine which solution(s) is/are stable. The analysis indicated that only the first solution is stable. Furthermore, it was also found that the temperature increases in both solutions when the magnetic parameter and Eckert number are increased, while it reduces as the thermal slip parameter rises. Furthermore, the coefficient of skin friction and the heat transfer rate increase for the first solution when the magnetic and the suction parameters are increased. Meanwhile, no change is noticed in the boundary layer separation for the various values of the Eckert number in the heat transfer rate.

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Section: Introductionmentioning

confidence: 56%

Dual Solutions and Stability Analysis of Magnetized Hybrid Nanofluid with Joule Heating and Multiple Slip Conditions

et al. 2020

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“…Meanwhile, Moghadassi et al [20] studied the Al 2 O 3 − Cu/ water base hybrid nanofluid numerically and found that "for the hybrid nanofluids, the average Nusselt number increase was 4.73% and 13.46% in compared to Al 2 O 3 water and pure water, respectively". Moreover, this model has been widely employed by many researchers, such as Hayat et al [21], Saba et al [22], Acharya et al [23], Afridi et al [24], Shafiq et al [25,26], and Manh et al [27]. Furthermore, Khashi'ie et al [28] found dual solutions of magnetohydrodynamic (MHD) flow of a hybrid nanofluid in the presence of Joule heating and noticed that higher values of Eckert number do not affect boundary layer separation.…”

Section: Introductionmentioning

confidence: 99%

Dual Solutions and Stability Analysis of a Hybrid Nanofluid over a Stretching/Shrinking Sheet Executing MHD Flow

et al. 2020

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In this paper, the unsteady magnetohydrodynamic (MHD) flow of hybrid nanofluid (HNF) composed of C u − A l 2 O 3 /water in the presence of a thermal radiation effect over the stretching/shrinking sheet is investigated. Using similarity transformation, the governing partial differential equations (PDEs) are transformed into a system of ordinary differential equations (ODEs), which are then solved by using a shooting method. In order to validate the obtained numerical results, the comparison of the results with the published literature is made numerically as well as graphically and is found in good agreements. In addition, the effects of many emerging physical governing parameters on the profiles of velocity, temperature, skin friction coefficient, and heat transfer rate are demonstrated graphically and are elucidated theoretically. Based on the numerical results, dual solutions exist in a specific range of magnetic, suction, and unsteadiness parameters. It was also found that the values of f ″ ( 0 ) rise in the first solution and reduce in the second solution when the solid volume fraction ϕ C u is increased. Finally, the temporal stability analysis of the solutions is conducted, and it is concluded that only the first solution is stable.

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“…Different combinations of nanoparticles and base fluid were also considered, i.e. MgO-MWCNT/ethylene glycol by Soltani and Akbari (2016), MgO-MWCNTs/EG by Vafaei et al (2017), TiO 2 -Cu/H 2 O by Ghadikolaei et al (2017), Ag-CuO/water by Hayat and Nadeem (2017) and Hayat et al (2018), Cu-Ag/water by Hassan et al (2018b), Ag-MgO/water by Ghalambaz et al (2019) and graphene-platinum hybrid nanofluids by Bahiraei and Mazaheri (2018), respectively. Devi and Devi (2016a) and Devi (2017, 2016b) investigated on the boundary layer flow of hybrid Cu-Al 2 O 3 /water nanofluid numerically due to a stretching sheet.…”

Section: Introductionmentioning

confidence: 99%

“…Devi and Devi (2016a) and Devi (2017, 2016b) investigated on the boundary layer flow of hybrid Cu-Al 2 O 3 /water nanofluid numerically due to a stretching sheet. Nadeem et al (2018) explored the stagnation point flow of hybrid Cu-Al 2 O 3 / water nanofluid on a circular cylinder while Rostami et al (2018) Marangoni convection is generated due to the variations of surface tension gradients, either in the temperature, concentration or both gradients. Marangoni convection is extensively applied in welding (Bachmann et al 2016;Cui et al 2018;Kidess et al 2016), crystal growth (Minakuchi et al 2017;Timoveef et al 2015) and soap film stabilisation (Bournival et al 2017;Raza et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Thermal Marangoni Flow Past a Permeable Stretching/Shrinking Sheet in a Hybrid Cu-Al2O3/Water Nanofluid

Khashi’ie¹,

Arifin²,

Pop³

et al. 2020

JSM

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The present study accentuates the Marangoni convection flow and heat transfer characteristics of a hybrid Cu-Al 2 O 3 / water nanofluid past a stretching/shrinking sheet. The presence of surface tension due to an imposed temperature gradient at the wall surface induces the thermal Marangoni convection. A suitable transformation is employed to convert the boundary layer flow and energy equations into a nonlinear set of ordinary (similarity) differential equations. The bvp4c solver in MATLAB software is utilized to solve the transformed system. The change in velocity and temperature, as well as the Nusselt number with the accretion of the dimensionless Marangoni, nanoparticles volume fraction and suction parameters, are discussed and manifested in the graph forms. The presence of two solutions for both stretching and shrinking flow cases are noticeable with the imposition of wall mass suction parameter. The adoption of stability analysis proves that the first solution is the real solution. Meanwhile, the heat transfer rate significantly augments with an upsurge of the Cu volume fraction (shrinking flow case) and Marangoni parameter (stretching flow case). Both Marangoni and Cu volume fraction parameters also can decelerate the boundary layer separation process.

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Rotating flow of Ag-CuO/H2O hybrid nanofluid with radiation and partial slip boundary effects

Cited by 184 publications

References 40 publications

Dual Solutions and Stability Analysis of Magnetized Hybrid Nanofluid with Joule Heating and Multiple Slip Conditions

Dual Solutions and Stability Analysis of Magnetized Hybrid Nanofluid with Joule Heating and Multiple Slip Conditions

Dual Solutions and Stability Analysis of a Hybrid Nanofluid over a Stretching/Shrinking Sheet Executing MHD Flow

Thermal Marangoni Flow Past a Permeable Stretching/Shrinking Sheet in a Hybrid Cu-Al2O3/Water Nanofluid

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