Natural Convection within Inversed T-Shaped Enclosure Filled by Nano-Enhanced Phase Change Material: Numerical Investigation

Abderrahmane, Aissa; Al-Khaleel, Mohammad; Mourad, Abed; Laidoudi, Houssem; Driss, Zied; Younis, Obai; Guedri, Kamel; Marzouki, Riad

doi:10.3390/nano12172917

Cited by 33 publications

(9 citation statements)

References 48 publications

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“…In this regard, Ahmed et al [ 7 ] presented a numerical investigation of the impacts of melting on the convective flow of Al 2 O 3 (nanoparticle)-based PCM within cylindrical tubes containing cross-shape heated sections The results of this study revealed that the flow structures, the irreversibility of the system, and the melting process can be controlled by increasing/decreasing number of the heated fins. Another numerical study on the natural convection within inversed T-shaped enclosure filled by nano-enhanced phase change material (NePCM) was performed by Abderrahmane et al [ 8 ]. Their considered enclosure contains various factors such as a hot trapezoidal fin on the bottom wall, which was saturated with pours media and exposed to a magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer and Fluids Properties of Nanofluids

Murshed

2023

Nanomaterials

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As it is popular research field, extensive research has been performed in various areas of nanofluids, and most of the studies have demonstrated significant enhancements in their thermophysical properties and thermal transport performance compared to those of conventional thermal fluids. However, there have been unanimous conclusions regarding such enhancements and their underlying mechanisms. Nanofluids’ potential and thermal applications mainly depend on their convective and boiling heat transfer performances, which are also not unbiased in the literature. On top of this, a major challenge with nanofluids is obtaining sustainable stability and persistent properties over a long duration. All these issues are very crucial for nanofluids’ development and applications, and a lot of research in these areas has been conducted in recent years. Thus, this Special Issue, featuring a dozen of high-quality research and reviews on different types of nanofluids and their important topics related to thermophysical and electrical properties as well as convective and boiling heat transfer characteristics, is of great significance for the progress and real-world applications of this new class of fluids.

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Section: Introductionmentioning

confidence: 99%

Heat Transfer and Fluids Properties of Nanofluids

Murshed

2023

Nanomaterials

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“…For this reason, many new works use this kind of fluid in order to expand knowledge about it (Selimefendigil and Öztop, 2018;Chen et al, 2015;Aissa et al, 2023;Laidoudi et al, 2022b;Jamaludin et al, 2021). Also, there is a type of fluid called NEPCM (Aissa et al, 2022a;Sadr et al, 2022;Aissa et al, 2022b;Ghalambaz et al, 2019;Aly et al, 2022), which is one of the manufactured fluids. This kind of suspension is composed of water and very fine capsules.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Non-Newtonian Fluid in a Lid-Driven Chamber With Heated Bodies Subjected to a Uniform Magnetic Field

Anouar

2023

JSSCM

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Recent studies have attempted to find methods and techniques that enable the development of heat transfer within thermal transformers. For this purpose, this paper includes a numerical simulation of a non-Newtonian fluid inside a chamber with four hot bodies. The chamber is exposed to a magnetic field of constant and uniform intensity. Also, the upper wall of the chamber has a horizontal movement. The study is based on the quality of heat transfer between the heated parts of the chamber and the complex fluid under the influence of a set of criteria, namely Reynolds number (= 1 to 40); Hartmann number (= 0 to 100); power-law index (= 0.6 to 1.4) and Richardson number (0 to 100). The interpretation of the results is done by displaying the path-lines and isotherms distribution. Also, the amount of thermal transfer of the hot bodies is given in terms of the Nusselt number. The results showed that the positioning of the hot bodies plays an important role in heat transfer. Moreover, increasing the value of the power-law index makes the fluid stickier, which reflects its negative effect on heat transfer.

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“…When used in thermal systems, PCMs provide several benefits. Numerous studies have proven that this strategy has significant promise for successful renewable energy resource usage, waste heat recovery, and thermal management [ 1 , 2 , 3 , 4 ]. Additionally, the capital costs for electrochemical storage devices and LHTES were estimated to be USD 200–300 and USD 70–200 per kWh, respectively [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Melting Process of Shell-and-Tube PCM Thermal Energy Storage Unit Using Modified Tube Design

et al. 2022

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Recently, phase change materials (PCMs) have gained great attention from engineers and researchers due to their exceptional properties for thermal energy storing, which would effectively aid in reducing carbon footprint and support the global transition of using renewable energy. The current research attempts to enhance the thermal performance of a shell-and-tube heat exchanger by means of using PCM and a modified tube design. The enthalpy–porosity method is employed for modelling the phase change. Paraffin wax is treated as PCM and poured within the annulus; the annulus comprises a circular shell and a fined wavy (trefoil-shaped) tube. In addition, copper nanoparticles are incorporated with the base PCM to enhance the thermal conductivity and melting rate. Effects of many factors, including nanoparticle concentration, the orientation of the interior wavy tube, and the fin length, were examined. Results obtained from the current model imply that Cu nanoparticles added to PCM materials improve thermal and melting properties while reducing entropy formation. The highest results (27% decrease in melting time) are obtained when a concentration of nanoparticles of 8% is used. Additionally, the fins’ location is critical because fins with 45° inclination could achieve a 50% expedition in the melting process.

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Natural Convection within Inversed T-Shaped Enclosure Filled by Nano-Enhanced Phase Change Material: Numerical Investigation

Cited by 33 publications

References 48 publications

Heat Transfer and Fluids Properties of Nanofluids

Heat Transfer and Fluids Properties of Nanofluids

Behavior of Non-Newtonian Fluid in a Lid-Driven Chamber With Heated Bodies Subjected to a Uniform Magnetic Field

Enhancing the Melting Process of Shell-and-Tube PCM Thermal Energy Storage Unit Using Modified Tube Design

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