In this numerical contribution, hybrid nanofluid flow behavior, thermal characteristics, and entropy generation analysis through a porous enclosure containing three circular cylinders with magnetic field effects were investigated using finite element approach. The cylinders are arranged in horizontal arrangement in the middle of cavity height, and the active hot central cylinder can move along the vertical central axis while other cold cylinders are considered fixed. The cylinders are enclosed by an adiabatic wavy cavity loaded with Cu-Al₂O₃-water. The results are discussed for the scrutinized parameters e.g., Rayleigh number (Ra), Darcy number (Da), Hartmann number (Ha), relative position of the hot cylinder (δ), and concentration in volume of nanoparticles (ϕ). It was inferred that the thermal-natural convective flow and overall heat transmission were reinforced by boosting Ra and Da, and lowering Ha. Changing the relative position of the hot cylinder has a remarkable effect on nanoliquid flow patterns, convective heat transfer and entropy generation characteristics.

在此数值贡献中，使用有限元方法研究了通过包含具有磁场效应的三个圆柱体的多孔外壳的混合纳米流体流动行为、热特性和熵生成分析。气缸在型腔高度中间水平排列，活动的热中心气缸可以沿垂直中心轴移动，而其他冷气缸则认为是固定的。圆柱体被装有Cu-Al ₂ O _{3 -}水的绝热波浪形腔包围。讨论了详细参数的结果，例如，瑞利数 ( Ra )、达西数 ( Da )、哈特曼数 ( Ha)、热圆柱体的相对位置 ( δ ) 和纳米粒子的体积浓度 ( φ )。据推断，通过提高Ra和Da并降低Ha来增强热自然对流流动和整体传热。改变热筒的相对位置对纳米液体流动模式、对流传热和熵产生特性有显着影响。