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2D MHD Mixed Convection in a Zigzag Trapezoidal Thermal Energy Storage System Using NEPCM.
Aissa Abderrahmane1, Obai Younis2, Mohammad Al-Khaleel3,4
1Laboratoire de Physique Quantique de la Matière et Modélisation Mathématique (LPQ3M), University of Mascara, Mascara 29000, Algeria.
Nanomaterials (Basel, Switzerland)
|October 14, 2022
Summary
This study explores 2D mixed convection in a zigzagged chamber using nano-encapsulated phase change materials. Minimizing the zigzag wave number enhances heat transfer rates.
Area of Science:
- Fluid Dynamics
- Heat Transfer
- Materials Science
Background:
- Investigates 2D mixed convection in a unique zigzagged trapezoidal chamber.
- Utilizes a nano-encapsulated phase change material (NEPCM) with water as the base fluid for enhanced thermal properties.
Purpose of the Study:
- To analyze the impact of magnetic fields on mixed convection within a complex geometry.
- To examine the melting process using the porosity-enthalpy approach.
- To compare heat transfer and fluid friction irreversibility using the Bejan number.
Main Methods:
- Employs the Galerkin finite element method (GFEM) to solve governing equations.
- Considers a zigzagged wall with varying zigzag numbers (N).
- Analyzes the effect of Reynolds number (Re) and Hartmann number (Ha).
Main Results:
- The melt band curve exhibits parabolic behavior at low Reynolds numbers and high Hartmann numbers.
- Minimizing the zigzag wave number leads to improved heat transfer rates.
- NEPCM enhances thermal parameters of the fluid.
Conclusions:
- The study provides insights into optimizing heat transfer in complex geometries under magnetic fields.
- Minimizing geometric complexity (wave number) is crucial for efficient heat transfer.
- GFEM is a suitable method for analyzing such multiphysics problems.
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