Alshare Aiman, Abderrahmane Aissa, Guedri Kamel, Younis Obai, Fayz-Al-Asad Muhammed, Ali Hafiz Muhammed, Al-Kouz Wael
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.
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.
本研究探讨了顶盖驱动方腔内的混合对流。该方腔内充满纳米流体并施加了磁场。考虑了同心卵形腔的取向（γ），范围为0−90°，以及波动数（N），范围为1−4。理查森数（Ri）在1到100之间变化。纳米流体的体积分数（φ）在0到0.08%之间。通过流函数、等温线和等熵轮廓说明了这些参数对流动、热传输和熵产生的影响。随着Ri、γ、N和φ的增加，传热增强，努塞尔数升高。模拟结果表明，传热是熵产生的原因，而摩擦和磁效应的影响较小。
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