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Melting Process of Carreau Non-Newtonian Nano-phase change material inside Cylindrical Energy Storage System rotating
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Alireza Kazemi1   , Mohsen Izadi *2 , Ehsanolah Assareh1 , Ali Ershadi3  |
1- Department of Mechanical Engineering, Dezful Branch, Islamic Azad University, Dezful, Iran
2- Mechanical Engineering Department, Faculty of Engineering, Lorestan University, Khorramabad, Iran , izadi.m@lu.ac.ir
3- Department of Mechanical Engineering, Dezful Branch, Islamic Azad University, Dezful, Iran, Roosta St. |
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Abstract: (8 Views) |
| In this research, the melting process of the non-Newtonian phase change material inside a porous vertical cylinder equipped with fins has been numerically investigated. First, the governing equations and corresponding boundary conditions have been derived based on the enthalpy-porosity method and in cylindrical coordinates. In the following, they were transferred to their dimensionless form and finally solved using the finite element method. The independence of the solution from the computational grid size has been evaluated and the computational fluid dynamics code created has been compared and validated with valid numerical and laboratory researches. The results for the rotation of the storage with the presence of three thermal fins are shown in the form of flow lines, melting front, constant temperature lines, speed and average Nusselt number as well as the amount of melting fraction of phase change nano material. According to the observations and investigations, changing the angle of deviation from the horizontal axis did not affect the pattern of temperature constant lines and melting front; In other words, the values related to the average Nusselt number and melting fraction have not changed significantly for different deviation angles; Since the entire space in question is porous and the conduction heat transfer mode is dominant, the change in buoyancy forces (as representative of natural convection heat transfer), through the change in the deflection angle, does not affect the heat transfer rate and the melting front to give. |
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| Keywords: Melting process, Natural convection, Conjugate heat transfer, porous media, Carreau non- Newtonian fluid, nanofluid. |
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Full-Text [PDF 2404 kb]
(7 Downloads)
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Type of Study: Research |
Subject:
Heat and Mass Transfer
Received: 2025/12/3 | Accepted: 2026/02/28 | Published: 2026/03/1
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