具有波浪边界的椭圆形腔与下方加热的同心顶盖驱动腔内纳米流体自然对流的热液与熵研究。

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.

作者信息

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

机构信息

Mechanical and Maintenance Engineering, German Jordanian University, P.O. Box 35247, Amman 11180, Jordan.

Laboratoire de Physique Quantique de la Matière et Modélisation Mathématique (LPQ3M), University of Mustapha Stambouli of Mascara, Mascara 29000, Algeria.

出版信息

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

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.