A novel trapezoidal corrugated perforated fin core is proposed in this study. The porosity of the fin surface, or perforations, is indicated to promote the unusual behavior of increasing the heat transfer coefficient, while reducing the friction factor with respect to its non-perforated counterpart, primarily due to surface transpiration, which leads to better flow mixing and successive boundary layer disturbances. This allows the heat exchanger to be built much more compact with a smaller volume and a front area. To highlight this, the results of the computational simulations for velocity and temperature fields in typical trapezoidal corrugated perforated plate-fin ducts are presented. Constant property, fully or periodically developed laminar airflow $\left(Pr=0.71\right)$ with Reynolds number $\left(10\le Re\le 1000\right)$ passing through inter-fin passages, with fins at constant wall temperature T, in which the fin walls have perforations equally spaced along the length of the duct, is considered and a parametric study of the effects of the duct geometry, including the variation of the inclination angle $\left(\varphi \right)$ of the diverging plane, the aspect ratio of the channel or period length and fin density effects $\left(\lambda =L/D_h\right)$ and the converging-diverging ratio of the plate $\left(\epsilon \right)$, is performed. The results of the Fanning friction factor and the Nusselt number over the wide range of the Reynolds number, which was treated in this study, show the improved performance. The improvement is assessed quantitatively by the area goodness factor (j/f) relative to Re, comparison with simple flat channels. It is seen that increasing ϕ to ${45}^{°}$ improves the core performance; As ϕ increases beyond ${45}^{°}$, performance starts to decrease. j/f increases with increasing λ; and λ = 3.6 acts as an inflection point. It is better to have a large λ value for lower Re range and vice versa. As ε increases, the performance increases; so, the highest area goodness factor value occurs at $\epsilon =0.36$. In case 11, with $\lambda =3.6$, $\varphi ={45}^{°}$, and $\epsilon =0.36$ at Re = 200, compared to the non-perforated channel, the friction factor decreases about 11%, and the area goodness factor increases about 72%. Thus, the area goodness factor of the perforated case reaches 0.37.

本研究提出了一种新型梯形波纹穿孔翅片芯。翅片表面或穿孔的孔隙率有助于增加传热系数的不寻常行为，同时降低其非穿孔对应物的摩擦系数，主要是由于表面蒸腾作用，从而导致更好的流动混合和连续的边界层扰动。这使得热交换器能够以更小的体积和前部面积建造得更加紧凑。为了强调这一点，我们介绍了典型梯形波纹穿孔板翅式管道中速度和温度场的计算模拟结果。恒定特性，完全或周期性发展的层流气流$\left(磷r=0.71\right)$ 与雷诺数 $\left(10\le \mathrm{电阻}\mathrm{电子}\le 1000\right)$ 考虑通过翅片间通道，翅片壁温恒定为 T，其中翅片壁具有沿管道长度等距分布的穿孔，并考虑对管道几何形状的影响进行参数研究，包括倾角 $\left(\phi \right)$ 发散平面的纵横比或周期长度和鳍密度效应 $\left(\lambda =升/D_H\right)$ 和板块的收敛发散比 $\left(\epsilon \right)$，进行。本研究中处理的范宁摩擦系数和雷诺数范围内的努塞尔数的结果表明性能有所提高。与简单平坦通道相比，通过相对于Re的面积优度因子 ( j / f )定量评估改进。可以看出，将ϕ增加到${45}^{°}$提高核心性能；随着ϕ增加超过${45}^{°}$，性能开始下降。j / f随着λ 的增加而增加；和λ  = 3.6作为拐点。对于较低的 Re 范围，最好有较大的λ值，反之亦然。随着ε增加，性能增加；因此，最高的区域良性因子值出现在$\epsilon =0.36$. 在案例 11 中，$\lambda =3.6$, $\phi ={45}^{°}$， 和 $\epsilon =0.36$在 Re = 200 时，与非穿孔通道相比，摩擦系数降低了约 11%，面积良度系数增加了约 72%。因此，穿孔案例的面积优良系数达到0.37。