Journal ArticleDOI
Influence of T-semi attached rib on turbulent flow and heat transfer parameters of a silver-water nanofluid with different volume fractions in a three-dimensional trapezoidal microchannel
Habibollah Alipour,Arash Karimipour,Mohammad Reza Safaei,Davood Toghraie Semiromi,Omid Ali Akbari +4 more
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In this paper, the influence of T-semi attached rib on the turbulent flow and heat transfer parameters of a silver-water nanofluid with different volume fractions in a three-dimensional trapezoidal microchannel was explored.Abstract:
This study aimed at exploring influence of T-semi attached rib on the turbulent flow and heat transfer parameters of a silver-water nanofluid with different volume fractions in a three-dimensional trapezoidal microchannel. For this purpose, convection heat transfer of the silver-water nanofluid in a ribbed microchannel was numerically studied under a constant heat flux on upper and lower walls as well as isolated side walls. Calculations were done for a range of Reynolds numbers between 10,000 and 16,000, and in four different sorts of serrations with proportion of rib width to hole of serration width (R/W). The results of this research are presented as the coefficient of friction, Nusselt number, heat transfer coefficient and thermal efficiency, four different R/W microchannels. The results of numerical modeling showed that the fluid's convection heat transfer coefficient is increased as the Reynolds number and volume fraction of solid nanoparticle are increased. For R/W=0.5, it was also maximum for all the volume fractions of nanoparticle and different Reynolds numbers in comparison to other similar R/W situations. That's while friction coefficient, pressure drop and pumping power is maximum for serration with R/W=0 compared to other serration ratios which lead to decreased fluid-heat transfer performance.read more
Citations
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Heat transfer efficiency of Al2O3-MWCNT/thermal oil hybrid nanofluid as a cooling fluid in thermal and energy management applications: An experimental and theoretical investigation
Amin Asadi,Meisam Asadi,Alireza Rezaniakolaei,Lasse Rosendahl,Masoud Afrand,Somchai Wongwises +5 more
TL;DR: In this paper, the authors evaluated the heat transfer efficiency of Al2O3-MWCNT/thermal oil hybrid nanofluid over different temperatures (25-50°C) and solid concentrations (0.125% −1.5%).
Journal ArticleDOI
Investigation of turbulent heat transfer and nanofluid flow in a double pipe heat exchanger
Mohammad Hussein Bahmani,Ghanbar Ali Sheikhzadeh,Majid Zarringhalam,Omid Ali Akbari,Abdullah A.A.A. Al-Rashed,Gholamreza Ahmadi Sheikh Shabani,Marjan Goodarzi +6 more
TL;DR: In this paper, the effects of nanoparticles volume fraction, flow direction and Reynolds number on base fluid, nanofluid and wall temperatures, thermal efficiency, Nusselt number and convection heat transfer coefficient have been studied.
Journal ArticleDOI
Heat transfer improvement of water/single-wall carbon nanotubes (SWCNT) nanofluid in a novel design of a truncated double-layered microchannel heat sink
Ali Akbar Abbasian Arani,Omid Ali Akbari,Mohammad Reza Safaei,Ali Marzban,Abdullah A.A.A. Al-Rashed,Gholamreza Ahmadi,Truong Khang Nguyen +6 more
TL;DR: In this article, double layered micro-channel heat sink (MCHS) was used to transfer heat from nanofluid water/single-wall carbon nanotubes.
Journal ArticleDOI
A new correlation for predicting the thermal conductivity of ZnO–Ag (50%–50%)/water hybrid nanofluid: An experimental study
TL;DR: In this paper, the effect of volume fraction (0.125-2%) and temperature (25-50°C) on thermal conductivity of a hybrid nanofluid was examined.
Journal ArticleDOI
Developing a new correlation to estimate the thermal conductivity of MWCNT-CuO/water hybrid nanofluid via an experimental investigation
TL;DR: In this paper, the enhancement of thermal conductivities of water in the presence of copper oxide and multiwalled carbon nanotubes is investigated for the first time, and the results show that the thermal conductivity of the nanofluid increases at more solid concentration.
References
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Journal ArticleDOI
Experimental investigation of local heat transfer in a square duct with various-shaped ribs
Lei Wang,Bengt Sundén +1 more
TL;DR: In this article, experimental studies are carried out to investigate the heat transfer and friction characteristics in a square duct roughened by various-shaped ribs on one wall in a periodic arrangement.
Journal ArticleDOI
Heat transfer to a liquid—solid mixture in a flume
Gad Hetsroni,R. Rozenblit +1 more
TL;DR: In this paper, infrared thermography was used to study the thermal interaction between the particle-laden turbulent flow and a heated plate, and the maximum amplitude of wall temperature fluctuations reached ±40% of the difference between the average wall temperature and the fluid bulk temperature.
Journal ArticleDOI
Heat transfer in the microchannels with fan-shaped reentrant cavities and different ribs based on field synergy principle and entropy generation analysis
TL;DR: In this article, the effect of different types of ribs on the overall performance is evident, and different comprehensive performance criteria, based on the first and second law of thermodynamics, are proposed to assess the relative merit of each microchannel.
Journal ArticleDOI
Impact of ribs on flow parameters and laminar heat transfer of water–aluminum oxide nanofluid with different nanoparticle volume fractions in a three-dimensional rectangular microchannel:
TL;DR: In this paper, the impact of ribs on flow parameters and laminar heat transfer of water-aluminum oxide nanofluid with different nanoparticle volume fractions in a three-dimensional rectangular microchannel has been numerically studied.
Journal ArticleDOI
Performance investigation of micro- and nano-sized particle erosion in a 90° elbow using an ANFIS model
Shahaboddin Shamshirband,Amir Malvandi,Arash Karimipour,Marjan Goodarzi,Masoud Afrand,Dalibor Petković,Mahidzal Dahari,Naghmeh Mahmoodian,Naghmeh Mahmoodian +8 more
TL;DR: In this paper, an adaptive neuro-fuzzy inference system (ANFIS) was used to predict the performance of micro and nano-sized particle erosion in a 3-D 90° elbow.