A comprehensive, computational study framework of the influence of Aluminum Oxide nanoparticles on double-diffusive convection in a lid-driven enclosure
- Department of Mechanical Engineering, Hamedan University of Technology, Hamedan, Iran
- Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
Received: 2024-08-21
Revised: 2024-09-28
Accepted: 2024-09-29
Published in Issue 2025-01-10
Copyright (c) 2024 Najmeh Hajialigol, Abolfazl Fattahi, Hamidreza Shahbazian (Author)

This work is licensed under a Creative Commons Attribution 4.0 International License.
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Abstract
The current investigation emphasizes the Aluminum oxide in water nanoparticles' effect on double-diffusive mixed convection flow in lid-driven enclosure numerically. The main purpose of the investigation is the assessment of the changes in heat and transfer, due to variations of the dimensionless parameters of the Richardson number that covers the range of 0.01 and 100, the Lewis number that changes from 0.1 to 10, also 0 to 5 are related to the changes of the buoyancy ratio and the nanoparticles volume fraction is fallen in the range of 0 to 0.06 and the location displacement of the source from the highest to lowest in the left wall. The control volume method, SIMPLER algorithm, and a hybrid discretization method are applied to the governing equations. The fluctuations of the mean Nusselt number as well as the mean Sherwood numbers via the variation of the mentioned dimensionless numbers are illustrated. The results indicate that heat transfer is enhanced with increasing nanoparticle concentration, while mass transfer is subsided. Moreover, the rate of both heat and mass transfer is amplified by up to 25% as the buoyancy ratio increases from 0 to 5. However, the Richarson number increment makes a decrement in both.
Keywords
- Al2O3-water nanofluid,
- Double-diffusion,
- Heat transfer augmentation,
- Mixed convection,
- Nusselt number,
- Sherwood number
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