Effect of Magnetic Field on Entropy Generation in a Microchannel Heat Sink with Offset Fan Shaped

Nasiri, Mohammad; Rashidi, Majid; Lorenzini, Giulio

doi:10.3390/e18010010

Cited by 15 publications

(8 citation statements)

References 35 publications

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“…In recent years, a great number of studies have been conducted utilizing innovative geometries [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ], employing liquid coolants with excellent thermal features [ 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 ], and applying micro-pin-fins [ 42 , 43 , 44 ] in order to improve the capabilities of microchannel heat sinks (MCHS) removing the heat generated by electronic chips.…”

Section: Introductionmentioning

confidence: 99%

“…Xie et al [ 34 ] presented a numerical analysis on the heat transfer and friction characteristics of a minichannel heat sink using water. Nasiri et al [ 37 ] numerically investigated the entropy generation in MCHS with Fe 3 O 4 –water. Bahiraei and Heshmatian [ 38 ] pointed out that nanofluids containing grapheme and silver nanoparticles result in excellent thermal characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…Entropy generation minimization [ 52 , 53 ] and the principle of least action [ 54 , 55 , 56 ] are two important methods to study the performance optimization of a thermal system. Some efforts have been made to research into the entropy generation of different thermal systems [ 23 , 37 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ]. Khan et al [ 59 ] studied the performance of MCHS using an entropy generation minimization procedure, and proposed a general expression evaluating irreversibilities.…”

Section: Introductionmentioning

confidence: 99%

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Fluid Flow and Entropy Generation Analysis of Al2O3–Water Nanofluid in Microchannel Plate Fin Heat Sinks

Duan

et al. 2019

Entropy

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The flow in channels of microdevices is usually in the developing regime. Three-dimensional laminar flow characteristics of a nanofluid in microchannel plate fin heat sinks are investigated numerically in this paper. Deionized water and Al2O3–water nanofluid are employed as the cooling fluid in our work. The effects of the Reynolds number (100 < Re < 1000), channel aspect ratio (0 < ε < 1), and nanoparticle volume fraction (0.5% < Φ < 5%) on pressure drop and entropy generation in microchannel plate fin heat sinks are examined in detail. Herein, the general expression of the entropy generation rate considering entrance effects is developed. The results revealed that the frictional entropy generation and pressure drop increase as nanoparticle volume fraction and Reynolds number increase, while decrease as the channel aspect ratio increases. When the nanoparticle volume fraction increases from 0 to 3% at Re = 500, the pressure drop of microchannel plate fin heat sinks with ε = 0.5 increases by 9%. It is demonstrated that the effect of the entrance region is crucial for evaluating the performance of microchannel plate fin heat sinks. The study may shed some light on the design and optimization of microchannel heat sinks.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fluid Flow and Entropy Generation Analysis of Al2O3–Water Nanofluid in Microchannel Plate Fin Heat Sinks

Duan

et al. 2019

Entropy

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“…However, Drexler published the first book about nanotechnology in 1986. Nowadays, countless numbers of nanotechnology applications are known, and include, but are not limited to, health and medicine, energy storage, automotive, oil and gas industries, renewable energies, lubrication, manufacturing, and heat and mass transfer applications …”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of thermal performance of the graphene oxide–coated plates

Ghasemiasl

Taheri

Molana

et al. 2019

Heat Trans. Asian Res.

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This paper experimentally investigates the conductive heat transfer of samples with different materials and coatings. A range of graphene oxide nanoparticle concentration has been employed. Results demonstrate that utilizing nanoparticles leads to enhancement of conductive heat transfer by 10.07% and 8.01% for EK2 and ST14 samples, respectively. The aforementioned nanoparticles also reduce coating thickness and yield an enhanced quality of the surface, in terms of mechanical properties. The convective and radiative methods of heat transfer have been ignored in this study. K E Y W O R D SCoating, Conduction, Enamel, Graphene oxide, Nanoparticles 1 | INTRODUCTION Nanotechnology and its fascinating capabilities have attracted abundant research funds and endeavors during the past six decades. The term "nanotechnology" was introduced for the first time by a most-prized physicist, Richard Feynman, in 1959, to focus more at the bottoms looking for more space, instead of current space explorations. However, Drexler 1 published the first book about nanotechnology in 1986. Nowadays, countless numbers of nanotechnology applications are known, and include, but are not limited to, health and medicine, 2,3 energy storage, 4-11 automotive, 12-16 oil and gas industries, 17-22 renewable energies, 23-25 lubrication, 26-28 manufacturing, 29-37 and heat and mass transfer applications. 13,21,[38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] Graphene is a modern nanomaterial, which was discovered, isolated, and characterized by Novoselov et al 53 for the first time and now has numerous applications due to its promising mechanical, electrical, and thermal properties. 54,55 Graphene has a two-dimensional structure

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“…Sheremet et al [ 20 ] evaluated the entropy generation in a square cavity where a solid body was installed inside it using nanofluid. Nasiri et al [ 21 ] studied the flow of Fe 3 O 4 –water nanofluid in a microchannel heat sink with offset fan-shaped reentrant cavities.…”

mentioning

confidence: 99%

Entropy in Nanofluids

Lorenzini

Mahian

2018

Entropy

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The study on entropy generation and exergy analysis in Nanofluid flows started in 2010 [1]. After this date, many other studies have been done on this topic such as [2-6]. Figure 1 shows the increase in the number of research and review articles in the field of entropy generation in nanofluid flows. The data are obtained from Scopus, by searching the keywords of "Nanofluids" or "Nanofluid" and "Entropy Generation" or "Exergy". As shown, the interest to this subject has increased year by year so that in 2017 the number of articles reached more than 100.

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Effect of Magnetic Field on Entropy Generation in a Microchannel Heat Sink with Offset Fan Shaped

Cited by 15 publications

References 35 publications

Fluid Flow and Entropy Generation Analysis of Al2O3–Water Nanofluid in Microchannel Plate Fin Heat Sinks

Fluid Flow and Entropy Generation Analysis of Al2O3–Water Nanofluid in Microchannel Plate Fin Heat Sinks

Experimental investigation of thermal performance of the graphene oxide–coated plates

Entropy in Nanofluids

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