Thermal analysis of a nanofluid free jet impingement on a rotating disk using volume of fluid in combination with discrete modelling

Mahdavi, Mostafa; Sharifpur, Mohsen; Meyer, Josua P.; Chen, Lingen

doi:10.1016/j.ijthermalsci.2020.106532

Cited by 25 publications

(11 citation statements)

References 73 publications

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“…A linear function was observed between Nu and the solid volume fraction for spherical-shape nanoparticles, whereas for the cylindrical shape, deviation from the linear function was experienced. A numerical investigation was performed by Mahdavi et al [140] to study the heat transfer characteristics of a free surface air/nanofluid jet on a circular rotating heated disk. The parameters used to perform this analysis were the volume fraction of rotation of the disk and nanoparticles.…”

Section: Nanofluidsmentioning

confidence: 99%

“…As the particle volume fraction was increased, heat transfer was augmented. A numerical investigation was performed by Abdelrehim et al [143] for comparing the single and two-phase model A numerical investigation was performed by Mahdavi et al [140] to study the heat transfer characteristics of a free surface air/nanofluid jet on a circular rotating heated disk. The parameters used to perform this analysis were the volume fraction of rotation of the disk and nanoparticles.…”

Section: Nanofluidsmentioning

confidence: 99%

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Heat Transfer Augmentation through Different Jet Impingement Techniques: A State-of-the-Art Review

et al. 2021

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Jet impingement is considered to be an effective technique to enhance the heat transfer rate, and it finds many applications in the scientific and industrial horizons. The objective of this paper is to summarize heat transfer enhancement through different jet impingement methods and provide a platform for identifying the scope for future work. This study reviews various experimental and numerical studies of jet impingement methods for thermal-hydraulic improvement of heat transfer surfaces. The jet impingement methods considered in the present work include shapes of the target surface, the jet/nozzle–target surface distance, extended jet holes, nanofluids, and the use of phase change materials (PCMs). The present work also includes both single-jet and multiple-jet impingement studies for different industrial applications.

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Section: Nanofluidsmentioning

confidence: 99%

Section: Nanofluidsmentioning

confidence: 99%

Heat Transfer Augmentation through Different Jet Impingement Techniques: A State-of-the-Art Review

et al. 2021

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“…Nanoparticles are another technique for improving the collectors' efficiency (Qu et al, 2019;Mahmoudi et al, 2020;Alawi et al, 2021;Sadeghi et al, 2021). These materials have widely been examined by many researchers (Osman et al, 2019;Aghakhani et al, 2020;Eshgarf et al, 2021;Mahdavi et al, 2020;Nguyen et al, 2020;. Nanoparticles can improve heat transfer within the collector (Muhammad et al, 2016;Tong et al, 2019;Elcioglu et al, 2020;Gholipour et al, 2021;Mustafa et al, 2021).…”

Section: Second Scenariomentioning

confidence: 99%

Transient Thermal Analysis of a Solar-Assisted AHU by Focusing on Heat Recovery and Nanoparticles: Jeddah Climate Zone

Khetib

2021

Front. Energy Res.

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In the Jeddah climate region, a lot of energy is assigned to the air handling unit (AHU) sector, which should be reduced by using energy-efficient solutions. As the air passes through the cooling coil, a lot of energy is consumed to reduce the temperature along with humidity so that if the air is precooled in the previous stages, energy consumption in this energy-intensive section will be diminished. Using the coldness of the return air in the heat recovery unit (HRU), the incoming air is precooled. Based on the thermodynamic calculations, in June, July, and August, the cooling coil power demand reduces by 11.6, 13.3, and 12%, respectively. In summer, owing to using HRU, an energy-saving by 76.08 MWh is achieved (12.34% reduction in energy demand). By the incorporation of the solar collectors in the AHU, heating coil demand diminishes by 1,206, 1,399, and 1,367 kWh in June, July, and August, respectively. To improve the solar-assisted AHU effectiveness, the MWCNT nanoparticles are injected into the collectors, and it is found that the saving-energy capability improves by 17.7% using MWCNT-water at 0.1 vol.%.

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“…Several authors have done thermal modeling of nanofluids to find their properties and performance for various applications. [21][22][23][24][25][26][27][28] 31 observed peak absorption characteristics of nanoparticles on a particular wavelength, with the change in diametrical size resonance nature changes. Omara et al 32 used solar still having both nanofluid and corrugated wick and maintained vacuum inside the still, to minimize the convective heat transfer.…”

Section: Introductionmentioning

confidence: 98%

Performance Comparison of single‐slope solar still loaded with various nanofluids

Dhindsa

Kumar

Mittal

et al. 2021

Energy Science & Engineering

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Nanofluids are great heat transfer carriers for collecting thermal energy in solar thermal applications. In the present study, a theoretical study of single‐slope solar still (passive type) has been carried out by incorporating CuO, Al2O3, Ag, Fe2O3, and SiC‐water nanofluids at different volume concentrations (0.02, 0.05, 0.08, 0.12, and 0.2). This analysis has been carried out with an optimum water depth of 0.02m as obtained from the experimental and theoretical studies. In order to validate the model, the experiments were conducted on solar still and then performance of still was compared. The analytical expression of the characteristic equation using Runga‐Kutta ODE, for passive single slope solar still was found to be in good agreement with experiments carried out in Patiala, India. The total deviation for both experimental and theoretical distillate output of a still for a day was found to be 12.24%. Daily production for Al2O3‐water‐based nanofluid was found to be (14.22%) higher than simple solar still without nanofluid, followed by CuO (10.82%), Ag (8.11%), Fe2O3 (7.63%) and SiC (7.61%).

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Thermal analysis of a nanofluid free jet impingement on a rotating disk using volume of fluid in combination with discrete modelling

Cited by 25 publications

References 73 publications

Heat Transfer Augmentation through Different Jet Impingement Techniques: A State-of-the-Art Review

Heat Transfer Augmentation through Different Jet Impingement Techniques: A State-of-the-Art Review

Transient Thermal Analysis of a Solar-Assisted AHU by Focusing on Heat Recovery and Nanoparticles: Jeddah Climate Zone

Performance Comparison of single‐slope solar still loaded with various nanofluids

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