Entropy generation and temperature-dependent viscosity in the study of SWCNT–MWCNT hybrid nanofluid

Ahmad, Shafiq; Nadeem, S.; Ullah, Naeem

doi:10.1007/s13204-020-01306-0

Cited by 109 publications

(49 citation statements)

References 40 publications

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“…Barnoon et al [35] explained mixed convention analysis for nanofluid with entropy generation. Ahmad et al [36] explored hybrid nanofluid with entropy and thermal viscosity. Sheikholeslami et al [37] examined entropy generation for nanomaterial filled porous space.…”

Section: Introductionmentioning

confidence: 99%

Analysis of activation energy and entropy generation in mixed convective peristaltic transport of Sutterby nanofluid

Hayat

Nisar

Alsaedi

et al. 2020

J Therm Anal Calorim

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Peristalsis of nanofluid is significant in cancer treatment, ulcer treatment and industrial equipment. This study simulated the MHD peristaltic transport of Sutterby nanofluid with mixed convection and Hall current. Partial slip and convective conditions are imposed for flexible channel walls. Energy and concentration equations are modeled by considering the effects of Joule heating, thermal radiation, viscous dissipation and activation energy. Buongiorno nanofluid model is employed which features thermophoresis and Brownian movement aspects. The resulting nonlinear system of equations is numerically solved after employing the large wavelength and small Reynolds number supposition. Graphical analysis for the velocity, temperature, concentration, heat transfer coefficient and entropy generation is analyzed. It is observed that velocity has opposite behavior for mixed convection parameters. Temperature and heat transfer rate enhanced for Brownian movement and thermophoresis parameters. Concentration rises against larger activation energy and radiation variables. Further entropy declines against higher diffusion parameter.

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Section: Introductionmentioning

confidence: 99%

Analysis of activation energy and entropy generation in mixed convective peristaltic transport of Sutterby nanofluid

Hayat

Nisar

Alsaedi

et al. 2020

J Therm Anal Calorim

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“…MWCNT nanoparticles affect engine oil preparation, as they increase CNT to oil ratios and thermal conductivity. In [21][22][23][24], some recent research on hybrid nanoliquid has been noted. Mehryan et al [25] investigated the effects of the combined convection Cu-Al2O3/water hybrid nanoliquid and Al2O3/ water nanoliquid within a square cavity induced by a warm cylinder oscillation.…”

Section: Introductionmentioning

confidence: 99%

Buoyancy Effect on a Micropolar Fluid Flow Past a Vertical Riga Surface Comprising Water-Based SWCNT–MWCNT Hybrid Nanofluid Subject to Partially Slipped and Thermal Stratification: Cattaneo–Christov Model

Alshehri

Çoban

Ahmad

et al. 2021

Mathematical Problems in Engineering

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This paper provides a comprehensive analysis of the mixed convective flow that comprises SWCNT-MWCNT/water hybrid nanofluid containing micropolar fluid through a partially slipped vertical Riga surface. A Cattaneo–Christov heat flux model is used to examine the heat transport rate. The energy equation is gaining more significance with the effect of viscous dissipation and thermal stratification. The flow model is transformed by convenient transformation into nondimensionless form. The numerical results of nonlinear complex equations are collected using the bvp4c built-in function from MATLAB which is based on the finite difference method. The graphical results are obtained for both hybrid nanofluid and simple nanofluid. The temperature distribution for hybrid nanofluid is higher than that for simple nanofluid when the solid volume fraction increases. The axial friction factor increases with solid volume fraction, porosity parameter, and mixed convection parameter. The velocity graph varies inversely with nanofluid volume fraction and micropolar parameter.

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“…Muhammad et al 25 explored the flow of Carreau nanofluid past a wedge geometry by incorporating the effects of Bioconvection. Ahmad et al 26 considered the variable viscosity to explore the entropy generation of hybrid nanofluid. Ahmed et al 27 presented a model to explore the thermal features of Maxwell nanofluid past a stretching surface by considering the effect of Joule heating.…”

Section: Introductionmentioning

confidence: 99%

Energy transport analysis in flow of Carreau nanofluid inspired by variable thermal conductivity and zero mass flux conditions

Iqbal

Khan

Hamid

et al. 2021

Advances in Mechanical Engineering

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The presence of nanometric particles in the base fluids lead to form nanofluids. Nanofluids are prominent due to their astonishing features in thermally conducting flows and in the development of electronic and mechanical devices. Based on these motivations, we have designed our article to investigate the thermal conduction features in the free and forced convection flow of unsteady Carreau nanofluid due to stretching cylinder with the effects of variable magnetic field. Moreover, the transport of thermal energy in the flow is properly examined by including the impacts of variable thermal conductivity and nonuniform heat rise/fall. Furthermore, the transport of solutal energy in the flow of nanofluid is encountered under the influences of activation energy and binary chemical reactions. A momentous feature of this study is to employ the zero-mass flux condition at the wall of the cylinder. A section of this study is proposed for mathematical modelling of the current problem. Moreover, the impacts of involved physical constraints are explored by employing an efficient numerical technique namely bvp4c. The features of all physical constraints on flow, thermal and solutal curves are illustrated in the form of graphs and discussed with reasonable physical arguments in discussion section of the article. The core findings of this study are mentioned in the section of closing remarks. The core upshot of the current study is that the nanoparticles concentration rate of nanofluid depicts ascending trend for escalating values of activation energy constraint. A significant upsurge in the coefficients of skin friction and Nusselt number is detected with an escalation in the constraints of buoyancy and thermophoresis forces, respectively. The references regarding this article are also provided at the end.

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Entropy generation and temperature-dependent viscosity in the study of SWCNT–MWCNT hybrid nanofluid

Cited by 109 publications

References 40 publications

Analysis of activation energy and entropy generation in mixed convective peristaltic transport of Sutterby nanofluid

Analysis of activation energy and entropy generation in mixed convective peristaltic transport of Sutterby nanofluid

Buoyancy Effect on a Micropolar Fluid Flow Past a Vertical Riga Surface Comprising Water-Based SWCNT–MWCNT Hybrid Nanofluid Subject to Partially Slipped and Thermal Stratification: Cattaneo–Christov Model

Energy transport analysis in flow of Carreau nanofluid inspired by variable thermal conductivity and zero mass flux conditions

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