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ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561
Indexed in
NUMERICAL SIMULATION OF NATURAL CONVECTION AROUND AN OBSTACLE PLACED IN AN ENCLOSURE FILLED WITH DIFFERENT TYPES OF NANOFLUIDS
Краткое описание
The present numerical study deals with natural convection in an enclosure with a heated cylindrical block filled with nanofluid. The governing equations have been discretized using the finite volume method, and the SIMPLE algorithm has been used to couple velocity and pressure fields. The effect of the Rayleigh number, type, solid volume fraction of nanoparticles, radius, and position of the hot body is studied, and obtained results are presented in the form of streamline and isotherm plots, a Nusselt diagram, and comparative tables. Water, Cu−water, and Al2O3−water have been utilized as working fluids. In this study, the particle diameters of Cu and Al2O3 nanoparticles are 90 and 47 nm, respectively. On the basis of the results, increasing solid volume fraction and Ra number causes a noticeable enhancement in the rate of heat transfer. Also, increasing the radius of the hot circular cylinder, differences in values of Nusselt number between base fluid and nanofluid significantly increase.
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Li Jing, Yin Shao-Wu, Shi Guang-Si, Wang Li, Optimization of Indoor Thermal Comfort Parameters with the Adaptive Network-Based Fuzzy Inference System and Particle Swarm Optimization Algorithm, Mathematical Problems in Engineering, 2017, 2017. Crossref
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Vahedi Seyed Masoud, Pordanjani Ahmad Hajatzadeh, Wongwises Somchai, Afrand Masoud, On the role of enclosure side walls thickness and heater geometry in heat transfer enhancement of water–Al2O3 nanofluid in presence of a magnetic field, Journal of Thermal Analysis and Calorimetry, 138, 1, 2019. Crossref
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Li Yicheng, Moradi Iman, Kalantar Mahdi, Babadi Elmira, Malekahmadi Omid, Mosavi Amirhosein, Synthesis of new dihybrid nanofluid of TiO2/MWCNT in water–ethylene glycol to improve mixture thermal performance: preparation, characterization, and a novel correlation via ANN based on orthogonal distance regression algorithm, Journal of Thermal Analysis and Calorimetry, 144, 6, 2021. Crossref
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Chen Z., Yang L. M., Shu C., Zhao X., Liu N. Y., Liu Y. Y., Mixed convection between rotating sphere and concentric cubical enclosure, Physics of Fluids, 33, 1, 2021. Crossref
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Hemmat Esfe Mohammad, An experimental report and new correlation for estimating the dynamic viscosity of MWCNT(50)-ZnO(50)/SAE 50 as nano-lubricant, Journal of Thermal Analysis and Calorimetry, 143, 2, 2021. Crossref