Mixed convection heat transfer from surface-mounted block heat sources in a horizontal channel with nanofluids

Esfe, Mohammad Hemmat; Arani, Ali Akbar Abbasian; Niroumand, Amirhossein; Yan, Wei‐Mon; Karimipour, Arash

doi:10.1016/j.ijheatmasstransfer.2015.05.100

Cited by 99 publications

(11 citation statements)

References 26 publications

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“…The nanoparticles used in nanofluids are usually 33 prepared of metals, oxides or carbon nanotubes [1][2][3][4][5][6][7][8][9][10]. Information of 34 the rheological behavior of nanofluids is found to be very important 35 in determining their appropriateness for heat transfer applications.…”

mentioning

confidence: 99%

Experimental study on thermal conductivity of DWCNT-ZnO/water-EG nanofluids

Esfe

Yan

Akbari

et al. 2015

International Communications in Heat and Mass Transfer

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165

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mentioning

confidence: 99%

Experimental study on thermal conductivity of DWCNT-ZnO/water-EG nanofluids

Esfe

Yan

Akbari

et al. 2015

International Communications in Heat and Mass Transfer

Self Cite

165

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“…According to the literature, the thermal and physical properties of nanofluids depend on different factors such as characteristics of the nanoparticles (size, shape, material), nanoparticle concentration, temperature, surfactant, base fluid, nanofluid preparation method, and ultrasonication and stirring duration [45][46][47][48][49][50][51][52][53][54][55][56][57][58][59]. Figures 13-15 compare the thermal properties of 10W30-based nanofluids.…”

Section: Correlations Of Thermal Propertiesmentioning

confidence: 99%

Comparative Study on the Thermal Properties of Engine Oils and Their Nanofluids Incorporating Fullerene-C60, TiO2 and Fe2O3 at Different Temperatures

Galpaya,

Induranga,

Vithanage

et al. 2024

Energies

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The efficiency, durability, and overall performance of a car engine are influenced by several critical factors. The quality and properties of engine oil play a crucial role, and oil is used in internal combustion engines for lubrication and cooling purposes. This research study aimed to compare the impact of fullerene-C60 (99.5%), Fe2O3, and TiO2 nanoparticles on the thermal properties of C.A.L.T.E.X. red engine oil with grades 10W30, 20W40, and 20W50. This study focused on the effect of a nanoparticle concentration of 0.01 wt.% in different engine oil grades at various temperature values of 30–120 °C. The nanofluids were prepared using the two-step direct mixing method, employing a magnetic stirrer and an ultrasonicator, ensuring uniform distribution of nanoparticles in the base fluids. The thermal conductivity, thermal diffusivity, and volumetric heat capacity of the base fluids and nanofluids were measured using the FLUCON LAMBDA thermal conductivity meter. Additionally, flash points were measured using the flash point tester. It was concluded that the thermal properties of TiO2 and Fe2O3 showed considerable enhancement; in contrast, fullerene only showed a 212 °C flash point.

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“…The system's basic equations have been rewritten and expressed in Cartesian coordinates as seen below [26][27][28][29]:…”

Section: The Governing Equationsmentioning

confidence: 99%

Mixed Convection Heat Transfer in a Channel-Open Cavity with Two Heat Sources

Rashid¹,

Al-Gaheeshi²,

Rahman³

et al. 2023

IJHT

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With the aid of the COMSOL program, the laminar mixed convection heat transfer in a channel-open cavity with two heat sources of constant 20 W each and varying input air velocity ranges (0.1, 0.5, 1.0, and 1.5 m/s) is numerically determined. In this study, the effect of varying inlet air velocity on the heat transfer characteristics is investigated. Numerical results show that the temperature starts to fall steadily as one moves farther and further away from the site of the two heat sources and closer to the horizontal channel. The higher the velocity of the air entering the cavity, the greater the natural convection that will be created by the heated heat sources. The increase in inlet air velocity will increase the turbulence of airflow and thus increases the pressure distribution. The increase in absolute y-direction decreases the velocity distribution. The rise in the inlet velocity of air will increase the transfer of heat; thus, the Nusselt number will be great when increasing air flow velocity. The maximum Nusselt number is at the interface and reduces with increasing the absolute value of y. A reduction in air temperature and an increase in air density result from an increase in natural convection from the cavity into the air stream caused by an increase in air input velocity.

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Mixed convection heat transfer from surface-mounted block heat sources in a horizontal channel with nanofluids

Cited by 99 publications

References 26 publications

Experimental study on thermal conductivity of DWCNT-ZnO/water-EG nanofluids

Experimental study on thermal conductivity of DWCNT-ZnO/water-EG nanofluids

Comparative Study on the Thermal Properties of Engine Oils and Their Nanofluids Incorporating Fullerene-C60, TiO2 and Fe2O3 at Different Temperatures

Mixed Convection Heat Transfer in a Channel-Open Cavity with Two Heat Sources

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