Hydrothermal and Entropy Investigation of Nanofluid Natural Convection in a Lid-Driven Cavity Concentric with an Elliptical Cavity with a Wavy Boundary Heated from Below

Aiman Alshare; Aissa Abderrahmane; Kamel Guedri; Obai Younis; Muhammed Fayz-Al-Asad; Hafiz Muhammed Ali; Wael Al-Kouz

doi:10.3390/nano12091392

Hydrothermal and Entropy Investigation of Nanofluid Natural Convection in a Lid-Driven Cavity Concentric with an Elliptical Cavity with a Wavy Boundary Heated from Below

Nanomaterials (Basel). 2022 Apr 19;12(9):1392. doi: 10.3390/nano12091392.

Authors

Aiman Alshare¹, Aissa Abderrahmane², Kamel Guedri³, Obai Younis⁴, Muhammed Fayz-Al-Asad⁵, Hafiz Muhammed Ali^{6

7}, Wael Al-Kouz⁸

Affiliations

¹ Mechanical and Maintenance Engineering, German Jordanian University, P.O. Box 35247, Amman 11180, Jordan.
² Laboratoire de Physique Quantique de la Matière et Modélisation Mathématique (LPQ3M), University of Mustapha Stambouli of Mascara, Mascara 29000, Algeria.
³ Mechanical Engineering Department, College of Engineering and Islamic Architecture, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia.
⁴ Department of Mechanical Engineering, College of Engineering at Wadi Addawaser, Prince Sattam Bin Abdulaziz University, Al-Kharj 16278, Saudi Arabia.
⁵ Department of Mathematics, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh.
⁶ Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
⁷ Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS), King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
⁸ College of Engineering and Technology, American University of the Middle East, Kuwait 15453, Kuwait.

Abstract

This work investigates mixed convection in a lid-driven cavity. This cavity is filled with nanofluid and subjected to a magnetic field. The concentric ovoid cavity orientation (γ), 0−90°, and undulation number (N), 1−4, are considered. The Richardson number (Ri) varies between 1 and 100. The nanofluid volume fraction (φ) ranges between 0 and 0.08%. The effect of the parameters on flow, thermal transport, and entropy generation is illustrated by the stream function, isotherms, and isentropic contours. Heat transfer is augmented and the Nusselt number rises with higher Ri, γ, N, and φ. The simulations show that the heat transfer is responsible for entropy generation, while frictional and magnetic effects are marginal.

Keywords: entropy generation; lid-driven cavity; mixed convection; nanofluid.