Three dimensional numerical investigations on the heat transfer enhancement in a triangular facing step channels using nanofluid

Azeez, Kafel; Talib, Ahmad; Aziz, Nuraini Abdul; Ahmed, K. A.

doi:10.1088/1757-899x/152/1/012057

Cited by 2 publications

(3 citation statements)

References 25 publications

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“…Following our previous investigations as in [18], the flow is considered incompressible, laminar, steady, and three-dimensional, while the nanofluid is set as Newtonian fluid. In addition, the blend of solid nanoparticles and water mixture entering the channels are presumed at the same temperature and at equal velocity.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…The combined length ρ μ ρ of the lower corrugated plate is 20 cm in length. In line with our previous investigation [18], the inlet section is considered a smooth adiabatic section and of 70cm in length, in order to create suitable boundary conditions. The outlet section is also considered a smooth adiabatic section but of 20cm in length.…”

Section: Cfd Analysismentioning

confidence: 99%

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Heat transfer enhancement for corrugated facing step channels using aluminium nitride nanofluid - numerical investigation

Azeez

Talib

AHMED3

2022

Journal of Thermal Engineering

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The present work carries out a three-dimensional numerical analysis study of Aluminium Nitride (AlN)-water hybrid nanofluid enhanced heat transfer in laminar forced convection flow heat exchanger with four different channels, flat, backward facing step, triangle and trapezoidal facing step channels. The influence of different Reynolds number (100≤ Re ≤1500) and different solid nanoparticles volume fraction (1% and 4%) on the heat transfer and fluid flow were numerically investigated. The numerical analysis was carried out by using a laminar model of ANSYS-Fluent CFD code and the governing equations were resolved using the finite volume method. The results indicate that the thermal conductivity of the nanofluids increases with the increase values of both the nanoparticles volume fractions and Reynolds number, compared with base fluids. Likewise, the pressure drop showed slightly increased due to the increased of both parameters. The use of high nanoparticles volume fractions (4% volume) nanofluid corresponded with the use of four different channel designs resulted in heat transfer augmentation about 30% when compared to that pure water for the trapezoidal channel.

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Section: Mathematical Modelmentioning

confidence: 99%

Section: Cfd Analysismentioning

confidence: 99%

Heat transfer enhancement for corrugated facing step channels using aluminium nitride nanofluid - numerical investigation

Azeez

Talib

AHMED3

2022

Journal of Thermal Engineering

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“…Also, when 𝑝/𝐿 increases the heat transfer decreases. Mohammed et al (2016) conducted numerical study on laminar flow and heat exchange of distilled SiO 2 -water nanofluid through a wavy channel backward facing step, using the finite difference method for a range of Re varying between 100 and 1500 and a volume fraction of nanoparticles from 0 to 1%. The findings showed that the Nu and the coefficient of friction increase when the amplitude of the wavy channel increases.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Thermal and Hydraulic Characteristics of the SiO2–Water Nanofluid through a Backward-Facing Step

BENCHABI,

LANANI

2023

EPSTEM

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The work of this paper is devoted to the two-dimensional numerical investigation of the turbulent forced convection through backward-facing step. Two cases are taken into account. For the first, the bottom wall is smooth; but for the second case, it is corrugated with a triangular base containing ten corrugations. A uniform heat flux is imposed on the bottom wall. A flow of a nanofluid consisting of silicon dioxide SiO2 nanoparticles dispersed in a base fluid (water) flows through this step.The flow equations were discretized by the finite volume method. For modeling turbulence, the K-ɛ-RNG model was applied to analyze Reynolds number effect, the volume fraction and the size of the particle. Numerical simulations were conducted for various Reynolds between 10,000 and 40,000; volume fractions of nanoparticles which vary from 0 to 5% and particle diameter dp equal to 30; 50 and 70 nm. We noted that the obtained findings are in good conformity with those of the literature.

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Three dimensional numerical investigations on the heat transfer enhancement in a triangular facing step channels using nanofluid

Cited by 2 publications

References 25 publications

Heat transfer enhancement for corrugated facing step channels using aluminium nitride nanofluid - numerical investigation

Heat transfer enhancement for corrugated facing step channels using aluminium nitride nanofluid - numerical investigation

Numerical Study of the Thermal and Hydraulic Characteristics of the SiO2–Water Nanofluid through a Backward-Facing Step

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