Fluid flow and heat transfer investigations on enhanced microchannel heat sink using oblique fins with parametric study

Lee, Yong Jiun; Singh, Pawan Kumar; Lee, Poh Seng

doi:10.1016/j.ijheatmasstransfer.2014.10.018

Cited by 166 publications

(41 citation statements)

References 18 publications

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“…Within the saturated region, the bulk fluid temperature is equals to the local saturation temperature which is taken corresponding to the local pressure obtained as a linear interpolation between the inlet and outlet pressures, which can be justified based on very low measured pressure drop, as in Eq. (11).…”

Section: Heat Transfermentioning

confidence: 99%

“…However, these various enhancements come with quite a substantial two-phase pressure drop penalty, which can be controlled by careful modifications in the oblique fin structure. Lee et al [11] found that the oblique angle is one of the parameters which greatly influenced heat transfer and pressure drop performances during single-phase flow in the oblique-finned microchannels. Therefore, this forms the motivation behind the present study, where the oblique angles are varied to investigate its effect on two-phase heat transfer and pressure drop.…”

Section: Introductionmentioning

confidence: 99%

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Effects of varying oblique angles on flow boiling heat transfer and pressure characteristics in oblique-finned microchannels

Law

Kanargi

Lee

2016

International Journal of Heat and Mass Transfer

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Section: Heat Transfermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of varying oblique angles on flow boiling heat transfer and pressure characteristics in oblique-finned microchannels

Law

Kanargi

Lee

2016

International Journal of Heat and Mass Transfer

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“…Therefore, there is rapid development in the field of microelectromechanical systems (MEMS) technology. Microchannel cooling technology has a wide range of applications in the field of MEMS because of its high heat exchange capacity, light weight, and large surface area ratio compared with other cooling technologies . In recent years, research on microchannel technology has focused on reducing the surface temperature of high heat flux electronic components and reducing pressure loss.…”

Section: Introductionmentioning

confidence: 99%

Effect of aspect ratio on saturated boiling flow in microchannels with nonuniform heat flux

Yan

2019

Heat Trans. Asian Res.

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Microchannel two‐phase flow is an effective cooling method used in microelectronics, in which the heat flux density is unevenly distributed usually. The paper is focused on numerical study the effect of aspect ratio on the flow boiling of microchannels with nonuniform heat flux. The heat source is a three‐dimensional (3D) integrated circuit. 3D microchannel model and volume of fluid method are coupled in numerical simulation. The results show that the aspect ratio has no relationship with the two‐phase pressure drop of the microchannel. It has a certain influence on the distribution of bubble shape. In terms of the heat transfer coefficient, the aspect ratio has a certain influence on a section of the inlet. Due to the nucleate boiling, the convective heat transfer in the remaining areas is the dominant factor and the average heat transfer coefficient is mainly determined by the heat flux at the bottom of the channel.

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“…In recent years, more and more energy has been used in micro‐electro‐mechanical fields. The microchannel is widely used in the cooling systems of micro‐electro‐mechanical fields, due to its light weight and high heat transfer area compared with other liquid‐cooling systems . Since Tuckerman and Pease first introduced the concept of liquid‐cooled microchannel enhanced heat sinks, a large number of studies were for seeking ways to improve the heat transfer efficiency of microchannel heat sinks.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of hydrodynamic and heat transfer performances of nanofluids in a fractal microchannel heat sink

Yan

2019

Heat Trans. Asian Res.

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Heat transfer and hydrodynamic performances for nanofluids, Al2O3‐water and SiO2‐water, are numerically investigated with different nanoparticles’ volume fractions and the initial velocities in a fractal microchannel heat sink. The fractal microchannel is 100 μm × 100 μm in the inlet cross‐section, and the length at the 0th level is 2000 μm. A constant heat flux of 500 kW/m2 was applied to the bottom wall of the fractal microchannel heat sink. The heat transfer and hydrodynamic performances of different cases are discussed in terms of the mean heat transfer coefficient, mean base temperature, pressure loss, thermal resistance, friction factor f/f0, and COP/COP0. Results indicate that increasing the initial velocity and nanoparticles’ volume fraction lead to an enhanced heat transfer at the expense of pressure loss. Al2O3‐water has a higher mean heat transfer coefficient and pressure drop than that of SiO2‐water, a lower f/f0, mean base temperature, thermal resistance, and COP/COP0. Ultimately, as compared to pure water, the heat transfer coefficients of 4% Al2O3‐water increased by 7.53%, 7.80%, 8.00%, 8.14%, 8.16%, and 8.30%, and the pressure drops increased by 32.09%, 31.41%, 30.81%, 30.05%, 29.21%, and 28.58%, respectively, corresponding to the initial velocities by 4, 5, 6, 7, 8 and 9 m/s.

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Fluid flow and heat transfer investigations on enhanced microchannel heat sink using oblique fins with parametric study

Cited by 166 publications

References 18 publications

Effects of varying oblique angles on flow boiling heat transfer and pressure characteristics in oblique-finned microchannels

Effects of varying oblique angles on flow boiling heat transfer and pressure characteristics in oblique-finned microchannels

Effect of aspect ratio on saturated boiling flow in microchannels with nonuniform heat flux

Numerical investigation of hydrodynamic and heat transfer performances of nanofluids in a fractal microchannel heat sink

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