The present work deals with thermal aspect and entropy of ternary hybrid nanofluid (Graphene, AlO, and MWCNT as nanoparticles and water as base fluid) inside an inclined domain considering heat generation/absorption. The domain possesses triangle-shaped corrugated walls with variable height and a semi-circular heater located on its bottom wall. Finite element method (FEM) is employed to acquire a well-defined solution of the non-dimensional governing equations along with the boundary conditions. The influence of the pertinent parameters along with their ranges , , , has been studied. Some striking outcomes of the present investigation are that streamlines and entropy generation peter out while local Nusselt number and average Bejan number ameliorate with rise in dimensionless height of the corrugated wall . The absolute maximum values of vertical and horizontal velocities of ternary hybrid nanofluid enhance by 96.47 % and 29.5 %, respectively, when inclination angle increases from to . It is visualized that Nusselt number is maximum subject to heat sink while it attains a minimum value in response to heat source. Because of triangle shaped corrugated walls and ternary hybrid nanofluid, the present problem contributes superior cooling in thermal systems featured with such complex geometry in industries.

中文翻译：

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具有半圆形加热器和三角形波纹壁的倾斜域内三元混合纳米流体的热流体行为和熵解释

目前的工作涉及倾斜域内三元混合纳米流体（石墨烯、Al2O3 和 MWCNT 作为纳米粒子，水作为基液）的热方面和熵，考虑热量的产生/吸收。该域具有高度可变的三角形波纹壁和位于其底壁上的半圆形加热器。采用有限元法 (FEM) 来获取无量纲控制方程以及边界条件的明确解。研究了相关参数的影响及其范围 , , , 。本研究的一些显着结果是，流线和熵产生逐渐消失，而局部努塞尔数和平均贝詹数随着波纹壁无量纲高度的增加而改善。当倾角从 增加到 时，三元杂化纳米流体的垂直和水平速度绝对最大值分别提高了 96.47% 和 29.5%。可以看出，努塞尔数在受热沉影响时最大，而在受热源影响时达到最小值。由于三角形波纹壁和三元混合纳米流体，当前的问题有助于在工业中具有如此复杂几何形状的热系统中实现卓越的冷却。