Numerical investigations of heat transfer enhancement in a house shaped-corrugated channel: Combination of nanofluid and geometrical parameters

Ajeel, Raheem K.; Salim, W.S-I.W.; Hasnan, Khalid

doi:10.1016/j.tsep.2019.100376

Cited by 39 publications

(9 citation statements)

References 34 publications

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“…This test was performed under the condition that the inlet Reynolds number was 40,000 and water was used as the working fluid. The following formula [33] was used to calculate the relative error value of the average temperature of the fluid in the hot runner under different grid sizes:…”

Section: B Grid Independence Testmentioning

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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Section: B Grid Independence Testmentioning

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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“…Furthermore, it was found that the Nusselt number decreased with increasing the wavelength, while the pressure drops increased. Ajeel et al [23][24][25][26][27][28][29][30][31][32] numerically examined the effects of various parameter designs of a corrugated channel on the thermal hydraulic performance under different Reynolds number ranges. In [23], the effects of various parameter design on the thermal hydraulic performance of the corrugated channel were studied.…”

Section: Numerical Studiesmentioning

confidence: 99%

“…Ajeel et al [23][24][25][26][27][28][29][30][31][32] numerically examined the effects of various parameter designs of a corrugated channel on the thermal hydraulic performance under different Reynolds number ranges. In [23], the effects of various parameter design on the thermal hydraulic performance of the corrugated channel were studied. These parameters included pitch/length ratio, aspect ratio (height/width), and house ratio.…”

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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“…An increase in convective heat transfer at a Reynolds number of 1000 to 252% of MgO has been achieved. Ajeel et al [7][8][9] utilized SiO2 nanoparticles to analyze the thermal performance of corrugated channels. The findings highlighted new correlations for used SiO2-water nanofluid in terms of Nusselt number and friction factor.…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnO Nanoparticles on the Thermo-Physical Properties and Heat Transfer of Nano-Fluid Flows

Dhiaa¹,

Salih²,

Al-Yousefi³

2020

IJHT

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In this research, an improvement in alternative heat transfer and thermal properties of ZnO nanoparticles (NPs)/ distilled water, DW nanofluid are experimentally studied and investigated. The two-step approach is utilized to prepare the ZnO NPs/water nanofluid using different concentrations and different inlet temperatures. Scanning Electron Microscopy (SEM) and UV–visible spectrophotometer is employed to characterize the nanofluid. Varying flow rates and the temperatures are examined in the heat exchanger's horizontial tube and shell pipe as well as the impacts of ZnO nanoparticles and the temperatures are studied on nanofluid's thermal conductivity and viscosity. The findings show improvements in the thermal conductivity of ZnO NPs / DW nanofluid. A maximum value of 6.67% of the thermal conductivity is achieved at a temperature of 343K using 1 % ZnO NPs. Nusselt Number also shown an improvement of 38% at a temperature of 343K using 0.2% wt of ZnO NPs under the turbulent condition (Reynolds Number range of 8000 to 20000). Experimental results are compared with previous correlations and an acceptable agreement is observed.

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Numerical investigations of heat transfer enhancement in a house shaped-corrugated channel: Combination of nanofluid and geometrical parameters

Cited by 39 publications

References 34 publications

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

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

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

Effect of ZnO Nanoparticles on the Thermo-Physical Properties and Heat Transfer of Nano-Fluid Flows

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