Double‐diffusive natural convection in a partially heated enclosure using a nanofluid

Parvin, Salma; Nasrin, Rehena; Алим, М. А.; Hossain, N.F.

doi:10.1002/htj.21010

Cited by 38 publications

(16 citation statements)

References 27 publications

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“…The vertical velocity profiles also can demonstrate such transition. Here we must correct one conclusion drawn in a previous publication [9]. In Ref.…”

Section: Resultsmentioning

confidence: 58%

“…In Ref. [9], the authors claimed that nanofluid would move with greater velocity for a higher Ra while the waviness would decrease for lower values of Ra. According to Fig.…”

Section: Resultsmentioning

confidence: 99%

“…If the solid volume fraction is small enough, single phase simplification can provide acceptable predictions for the heat transfer and hydrodynamic properties of nanofluid with cheaper computational cost. Consequently, single phase approach is popularly utilized for simulating double-diffusive natural convection of nanofluid [8][9][10]. The present study is also based on this approach.…”

Section: Governing Equationsmentioning

confidence: 99%

“…The influences of the nanoparticle volume fraction, Rayleigh and Lewis number on the Nusselt and Sherwood number were discussed. Later, Parvin et al [9] numerically analyzed the flow and natural convection patterns of water-Al 2 O 3 nanofluid in a partially heated enclosure. In their study, the nanoparticle volume fraction varies from 0 to 0.2 with the Rayleigh number up to 10 6 .…”

Section: Introductionmentioning

confidence: 99%

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Double diffusion natural convection in a square cavity filled with nanofluid

Chen

Yang

Luo

et al. 2016

International Journal of Heat and Mass Transfer

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractDouble diffusive natural convection of nanofluid is commonly found in renewable energy engineering. However, nowadays our understanding on its fundamental characteristics is still limited. Especially, three crucial questions on its fundament have not been answered yet: (1) its performance not only in laminar regimes but also beyond laminar regimes, (2) the influence of the ratio of buoyancy forces on heat and mass transfer, (3) the correlation among the dimonsionless quantities which describe the features of this kind of convection. The present work tries to reveal the characteristics of double diffusion natural convection of nanofluid over a wide range, from laminar regimes to turbulent regimes, with the aid of numerical experiments. It is observed that the behavior of nanofluid in the laminar regimes is different from that in the turbulent regimes. Some conclusions presented in previous literatue for laminar double diffusion of nanofluid may be invalid in its turbulent counterpart. The effect of the ratio of buoyancy forces on heat and mass transfer of nanofluid possesses some similarities with the pure base fluid as well as some obvious differences. Especially, a power-like correlation among the Nusselt number, Sherwood number, Rayleigh number, ratio of buoyancy forces and nanoparticl volume fraction has been extracted for the first time through our numerical experiments.

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“…The vertical velocity profiles also can demonstrate such transition. Here we must correct one conclusion drawn in a previous publication [9]. In Ref.…”

Section: Resultsmentioning

confidence: 58%

“…In Ref. [9], the authors claimed that nanofluid would move with greater velocity for a higher Ra while the waviness would decrease for lower values of Ra. According to Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Double diffusion natural convection in a square cavity filled with nanofluid

Chen

Yang

Luo

et al. 2016

International Journal of Heat and Mass Transfer

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show abstract

“…Parvin et al [2] analyzed numerically the effect of double-diffusive natural convection of a water-Al2O3 nanofluid in a partially heated enclosure with Soret and Dufour coefficients. Muthucumaraswamy and Ganesan [3] studied effect of the chemical reaction and injection on flow characteristics in an unsteady upward motion of an isothermal plate.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis through a Tubular Reactor: Velocity Effect

Nasrin¹

2016

IJHT

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Chemical reactions occur everywhere in our everyday life, for example, in the human body, in cell phone batteries, in a rocket engine and in the pharmaceutical and chemical industry. In this research the model provides a study of an elementary, exothermic, 2nd-order reversible reaction in a tubular reactor (liquid phase, laminar flow regime). The aim of this project is to study numerically the effect of convective Heat and Mass transfer flow of a viscous fluid in the reactor. Assuming that the variations in angular direction around the central axis are negligible makes it possible to reduce the model to a 2D axisymmetric model. The investigation of forced convection flow, heat and mass transfer phenomena through a tubular reactor is carried. The implications of Reynolds number (Re) and Prandtl number (Pr) on the flow structure, heat transfer and mass transfer characteristics are presented. The results are presented in the form of stream functions, isothermal lines, iso-concentrations, surface temperature, arrow plot, average Nusselt number and Sherwood number, mean temperature, average concentration and mean velocity.

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Modeling of double diffusive buoyant flow in a solar collector with water‐CuO nanofluid

Nasrin

Алим

2013

Heat Trans. Asian Res.

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The behavior of a prism‐shaped solar collector with a right triangular cross sectional area is investigated numerically. The water‐CuO nanofluid is taken as the functioning liquid through the solar collector. The leading differential equations with boundary conditions are solved by the penalty finite element method using Galerkin's weighted residual scheme. The performance of parameters in terms of temperature, mass, velocity distributions, radiative, convective heat and mass transfer, mean temperature and concentration of nanofluid, mid height horizontal‐vertical velocities, and sub‐domain average velocity field are investigated systematically. These parameters include the Rayleigh number Ra and the solid volume fraction φ. The outcome explains that the performance of the solar collector can be enhanced with the largest Ra and φ. The code validation shows excellent concurrence with the hypothetical outcome obtainable in the literature. © 2013 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley Online Library (wileyonlinelibrary.com/journal/htj). DOI 10.1002/htj.21039

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Double‐diffusive natural convection in a partially heated enclosure using a nanofluid

Cited by 38 publications

References 27 publications

Double diffusion natural convection in a square cavity filled with nanofluid

Double diffusion natural convection in a square cavity filled with nanofluid

Numerical Analysis through a Tubular Reactor: Velocity Effect

Modeling of double diffusive buoyant flow in a solar collector with water‐CuO nanofluid

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