Natural Convection in a Square Cavity Filled With a Non-Darcy Porous Medium Saturated With Nanofluid by the Boundary Element Method

Stajnko, Janja Kramer; Ravnik, Jure; Jecl, R.

doi:10.1615/jpormedia.v20.i10.40

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…The most widely used CFD codes are CFX, Fluent, Star-CCM++ and OpenFOAM [59], which use the finite volume and finite element methods with the governing equations written in primitive variables formulation. Many research groups develop in-house CFD codes [28], [27], [60]- [62] using a wide variety of numerical approaches (e.g. boundary elements, spectral codes, etc.…”

Section: Cfd Codes and Discretizationmentioning

confidence: 99%

A Review of Modelling Approaches for Flow and Heat Transfer in Nanofluids

Ravnik

Tibaut

2018

Advances in Fluid Mechanics XII

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When designing devices in the field of process, power and heat engineering the choice of the fluid that transports heat, mass and momentum is crucial. The thermal properties of such a fluid defines the efficiency of the device. Since the thermal properties of the standard heat transfer fluids, such as water or oil, are not optimal, nanofluids were introduced. A nanofluid is a term describing a dilute dispersion of particles in a fluid. The diameter of particles is in the order of ten nanometres. The particles are made of metal oxides, which enhance the thermal properties of the suspension. In this paper we will present the current trends in nanofluid modelling-from the effective properties approach, an approach that features additional equation for nanofluid concentration-to Euler-Lagrange type approaches.

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Section: Cfd Codes and Discretizationmentioning

confidence: 99%

A Review of Modelling Approaches for Flow and Heat Transfer in Nanofluids

Ravnik

Tibaut

2018

Advances in Fluid Mechanics XII

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Predictive insights into nonlinear nanofluid flow in rotating systems: a machine learning approach

Khan,

Sulaiman,

2024

Engineering with Computers

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Numerical Study of Convective Heat Transfer in an Inclined Porous Enclosure Saturated With Nanofluid

Stajnko

Jecl

Ravnik

2018

Advances in Fluid Mechanics XII

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The addition of nanoscale particles into the fluid is recently a common technology used in several industrial processes, since it has been proved that by introducing particles into the working fluid, the heat transfer characteristics can be improved crucially. However, the understanding of fundamental characteristics of nanofluid saturated porous media domains is still limited. The paper presents a numerical study of free convection in a porous enclosure saturated with a nanofluid. A single-phase mathematical model has been employed assuming that the suspension of nanoparticles in fluid can be modelled as a new fluid with effective properties. Fluid flow in porous media is modelled with the macroscopic Navier-Stokes equations, where the governing parameters are averaged over the representative elementary volume. The obtained set of partial differential equations is solved with use of the numerical code based on the Boundary Element Method, which was primarily developed for pure fluid flow applications and was already proved to be efficient for solving several problems of fluid mechanics. Numerical results for different values of governing parameters are obtained, focusing on the effect of different volume fractions of added nanoparticles and different inclination angles of the porous enclosure on the overall heat transfer through porous domain.

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Natural Convection in a Square Cavity Filled With a Non-Darcy Porous Medium Saturated With Nanofluid by the Boundary Element Method

Cited by 3 publications

References 14 publications

A Review of Modelling Approaches for Flow and Heat Transfer in Nanofluids

A Review of Modelling Approaches for Flow and Heat Transfer in Nanofluids

Predictive insights into nonlinear nanofluid flow in rotating systems: a machine learning approach

Numerical Study of Convective Heat Transfer in an Inclined Porous Enclosure Saturated With Nanofluid

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