Flow investigation in a microchannel with a flow disturbing rib

Stogiannis, I.A.; Passos, A.D.; Mouza, A.A.; Paras, S.V.; Pěnkavová, Věra; Tihon, J.

doi:10.1016/j.ces.2014.07.055

Cited by 17 publications

(4 citation statements)

References 28 publications

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“…Using passive method, many authors [21] - [26] have been studied the enhancement of heat transfer through different types of micro-channels. Stogianis et al [27] have shown that friction factor increases due to the roughness of the geometry which causes the increase of turbulence near the hot surface. Wang et al [28] mentioned that, rate of local heat transfer varies with the shape of the baffle.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of laminar water-Al2O3 nanofluids flow and transfer of heat through a rectangular micro-channel in presence of trapezoidal baffles

Saha,

Raut,

Das

2024

Preprint

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Numerical simulations of laminar water-Al2O3 nanofluids flow phenomena and thermal behavior (velocity, normalized temperature profiles, poiseuille number, local and averageNusselt number and friction factor) through a rectangular micro-channel with two baffles have been studied with the variations of baffle height, volume fraction percentages and Re, which has a significant issue in engineering applications. The governing equations have been solved by SIMPLE algorithm and FLUENT software has been used to visualize the simulation results which demonstrate that variation. of volume fraction and baffle height resulted in a significant change in normalized temperature and velocity profiles along the center line.

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Section: Introductionmentioning

confidence: 99%

Numerical study of laminar water-Al2O3 nanofluids flow and transfer of heat through a rectangular micro-channel in presence of trapezoidal baffles

Saha,

Raut,

Das

2024

Preprint

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“…With the development of Micro-Particle Image Velocimetry technology (Micro-PIV), researchers have shown an increased interest in experimental investigation into flow across micro cylinders and micro tube bank models. (Armellini et al 2010;Stogiannis et al 2014).…”

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confidence: 99%

Flow Characteristics and Vortex Structure of Flow Across Micro Cylinders by Micro-PIV Measurement and CFD Simulation

2023

JAFM

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The micro tube bank model is a commonly used structure in microelectro mechanical cooling systems. Flow across a micro tube bank is a basic benchmark for analyzing flow resistance and heat transfer capability. In this paper, the flow around a micro tube bank model was studied both experimentally and numerically. Micro-Particle Image Velocimetry technology was used to measure the flow field at different inlet flow rates. The laminar flow model, S-A model and standard k-ε model were used to calculate the flow field inside the micro tube bank model. By comparing the results from the three numerical models with the experimental results, there is a certain gap between them can be noted. However, it was found that the standard k-ε model is better than laminar model and S-A model in the comparison between numerical results and experimental results. In conclusion, the standard k-ε model is more suitable for the numerical calculation of the flow field around a micro scale tube bank model.

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“…In the last decades, many studies have been conducted on new methods of heat transfer and nanofluid flow in channels, microchannels, microchannel heat chambers, and motion transducers. [1][2][3][4][5][6][7][8][9][10][11][12] Peyghambarzadeh et al 13 carried out an empirical investigation on calm flow of nanofluid water-carbon oxide and water-aluminum oxide in microchannel heat chambers. They found that using nanofluid as a cooling fluid has more pressure reduction compared to pure water.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of heat transfer and turbulent flow of water nanofluids copper oxide in rectangular microchannel with semi-attached rib

Akbari

Toghraie

Karimipour

2016

Advances in Mechanical Engineering

136

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In this research, the effect of utilizing semi-attached rib on heat transfer and liquid turbulent flow of nanofluid watercopper oxide in three-dimensional rectangular microchannel has been investigated. The results of numerical examination of this study in comparison to those of smooth channel have also been evaluated. The range of Reynolds numbers is between 10,000 and 60,000 and the volume fraction of copper oxide nanoparticle in 0%, 2%, and 4% was examined. In this numerical simulation, the effects of the changes in parameters such as dimensions of semi-attached rib, volume fraction of the nanoparticle, and Reynolds number were considered. The results of this study showed that utilizing semiattached rib in microchannel with a ratio of 0 \ R/W 0.325 in producing stronger vortices, which causes better mixture in fluid layers, is weaker than that with tooth mode of R/W = 0 ratio. However, the main advantage of using tooth with a ratio of 0 \ R/W 0.325 in comparison to ordinary tooth is the increase in heat transfer and reduction in coefficient friction and pumping power.

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Flow investigation in a microchannel with a flow disturbing rib

Cited by 17 publications

References 28 publications

Numerical study of laminar water-Al2O3 nanofluids flow and transfer of heat through a rectangular micro-channel in presence of trapezoidal baffles

Numerical study of laminar water-Al2O3 nanofluids flow and transfer of heat through a rectangular micro-channel in presence of trapezoidal baffles

Flow Characteristics and Vortex Structure of Flow Across Micro Cylinders by Micro-PIV Measurement and CFD Simulation

Numerical simulation of heat transfer and turbulent flow of water nanofluids copper oxide in rectangular microchannel with semi-attached rib

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