Investigation of corrugated channel performance with different wave shapes

Salami, M.; Khoshvaght-Aliabadi, M.; Feizabadi, Amir

doi:10.1007/s10973-019-08361-y

Cited by 27 publications

(7 citation statements)

References 39 publications

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“…It was also noted that the distance between the walls has an effective influence on the heat transfer between the corrugated walls. Salami et al [34] numerically studied the thermal hydraulic characteristics of flow inside corrugated channels of different shapes. The effect of phase shifts (0, π / 2, and π) was studied for three different corrugation shapes (trapezoid, triangle, and sinusoidal) for Reynolds number range of 6000-22,000.…”

Section: Numerical Studiesmentioning

confidence: 99%

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Augmentation of Fluid Flow and Heat Transfer Characteristics in corrugated Channel: A Review Study

Jaffal

Al‐Obaidi

Ghani

2021

DJES

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The corrugation configuration played an important role in heat transfer enhancement in many engineering applications such as heat exchangers, microchannel heat sink, solar collectors, etc. The significance of the corrugation configuration is manifested in its ability to offer a larger heat transfer area more than a straight channel. Besides, the periodic interruption and redeveloping of the thermal boundary layer which is an important feature offered by corrugation is remarkably enhanced the heat transfer. The researchers were keen to take advantage of these features and develop them by manipulating geometrical parameters to obtain the optimal results. The current work aims to collect available research data, which focused on improving heat transfer in corrugated channels and identifying the most important factors affecting the performance of corrugated channels. Among the studied shapes of the various operating conditions of the corrugated channels, the researchers unanimously agreed that the trapezoidal shape of the corrugations gives the best thermal improvement with a reasonable pressure drop inside the channels.

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Section: Numerical Studiesmentioning

confidence: 99%

“…Figure23. Schematic of computational domain and corrugated channels with different configuration[34] …”

mentioning

confidence: 99%

Augmentation of Fluid Flow and Heat Transfer Characteristics in corrugated Channel: A Review Study

Jaffal

Al‐Obaidi

Ghani

2021

DJES

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“…It should be noted that the geometrical configuration of the corrugated channels (e.g. wavelength and amplitude) affects the performance of the heat sink, which have been discussed in previous studies conducted by others [15,24,69,70] and thus are not repeated here.…”

Section: The Effect Of Employing Corrugated Channelsmentioning

confidence: 99%

“…Their results showed that the cross-section shape of the channel can significantly affect the heat transfer performance of corrugated channels. Salami et al [24] studied the influence of different wave shapes on turbulent heat and fluid flow in corrugated channels and reported that the sinusoidal wave shape, in comparison with triangular and trapezoidal wave shapes, can result in a higher thermal-hydraulic performance. The results reported by Sakanova et al [20], Lin et al [21], Khoshvaght-Aliabadi et al [25] indicate that increasing the amplitude or reducing the wavelength of corrugations intensifies the induced secondary flow that can lead to an enhancement in heat transfer performance.…”

Section: Introductionmentioning

confidence: 99%

Thermal and hydraulic performance analysis of a heat sink with corrugated channels and nanofluids

Naranjani

Roohi

Ebrahimi

2020

J Therm Anal Calorim

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Cooling of electronic devices is one of the critical challenges that the electronics industry is facing towards sustainable development. Aiming at lowering the surface temperature of the heat sink to limit thermally induced deformations, corrugated channels and nanofluids are employed to improve the thermal and hydraulic performances of a heat sink. Three-dimensional simulations based on the finite-volume approach are carried out to study conjugated heat transfer in the heat sink. Water-based nanofluids containing $$\hbox {Al}_{2}\hbox {O}_{3}$$ Al 2 O 3 nanoparticles with two different particle sizes (29 nm and 40 nm) and volume fractions less than 4% are employed as the coolant, and their influence on the thermal and hydraulic performance of the heat sink is compared with the base fluid (i.e. water). An empirical model is utilised to approximate the effective transport properties of the nanofluids. Employing corrugated channels instead of straight channels in the heat sink results in an enhancement of 24–36% in the heat transfer performance at the cost of 20–31% increase in the required pumping power leading to an enhancement of 16–24% in the overall performance of the heat sink. Additionally, the numerical predictions indicate that the overall performance of the proposed heat sink design with corrugated channels and water–$$\hbox {Al}_{2}\hbox {O}_{3}$$ Al 2 O 3 nanofluids is 22–40% higher than that of the water-cooled heat sink with straight channels. It is demonstrated that the overall performance of the heat sink cooled with water–$$\hbox {Al}_{2}\hbox {O}_{3}$$ Al 2 O 3 nanofluids increases with reducing the average nanoparticle size. Additionally, the maximum temperature rise in the heat sinks is determined for different thermal loads.

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“…I N PRACTICAL applications, enhanced heat transfer was one of the main technologies to achieve heat transfer and save energy, and the research on the flowfield and heat transfer in the hot runner to improve heat transfer performance was the most common scientific topic. To achieve a more efficient and energy-saving heat exchange process in heat exchange equipment, several techniques have been proposed to increase the heat transfer rate of the hot runner and reduce the pressure loss at the same time [1]. These enhanced heat transfer technologies can be divided into active and passive types, among which the passive enhanced heat transfer technology was widely used in actual processes because it does not require additional external power [2].…”

mentioning

confidence: 99%

Self-Excited Counterflow Disturbance and Heat Transfer Characteristics of Al2O3–Water Nanofluids

Yuan

Wang

et al. 2022

Journal of Thermophysics and Heat Transfer

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A numerical study of the heat transfer and flow resistance performance of Al 2 O 3 -water nanofluids in selfoscillating hot runners with different chamber lengths was performed. The control volume method based on the Semi-Implicit Method for Pressure Linked Equations (SIMPLE) algorithm was used to numerically solve the governing equations of the two-dimensional computational domain. The inlet flow rate was determined according to the Reynolds number (10;000 < Re < 50;000), and the uniform temperature was applied to the wall of the hot runner. The effects of chamber length and volume fraction on the heat transfer performance of nanofluids vortex pulsation were described by temperature, thermal boundary-layer thickness, pulsation frequency, Nusselt number, pressure drop, and heat transfer performance evaluation index. The simulation outcomes indicated that the counterflow vortex can reduce the thermal boundary-layer thickness and increase the mixing degree between the central mainstream region and the wall. It was also observed that the heat transfer performance increases with the increase of the chamber length. When L∕d 1 5.6, the heat transfer performance is the highest, and the main frequency (f 398.01 HZ) at the center of the chamber corresponds to the pressure pulsation amplitude of 35,982.6 Pa.

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Investigation of corrugated channel performance with different wave shapes

Cited by 27 publications

References 39 publications

Augmentation of Fluid Flow and Heat Transfer Characteristics in corrugated Channel: A Review Study

Augmentation of Fluid Flow and Heat Transfer Characteristics in corrugated Channel: A Review Study

Thermal and hydraulic performance analysis of a heat sink with corrugated channels and nanofluids

Self-Excited Counterflow Disturbance and Heat Transfer Characteristics of Al2O3–Water Nanofluids

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