This study aims to achieve a minimum base temperature (or junction temperature) and hence better thermal performance. Trapezoidal curved plate-fin heat sink with dolphin fins and rectangular channel (Model-1) and trapezoidal curved plate-fin heat sink with dolphin fins, cut corner, and rectangular channel (Model-2) were designed and compared with a standard plate-fin heat sink. The effects of fins on the airflow and heat transfer in designed plate-fin heat sinks have been investigated numerically. The numeric results show that the use of fins and small changes in geometry significantly improve the heat transfer rate. Outcomes of the study showed 44–51% and 57–62% convective heat transfer enhancement compared with a standard plate-fin heat sink, without any overall mass augmentation, in Model-1 and Model-2, respectively. The presence of dolphin fins reduces the thermal resistance by up to 30%, which contributes to the overall thermal enhancement of the designed plate-fin heat sinks. Simulation results show that increasing the fins in areas close to the heat source and reducing the non-working areas significantly influence the thermal performance of heat sinks. The results also show that the trapeze plate-fin heat sinks with the different channel-fin geometries are superior to the standard trapeze plate-fin heat sink in thermal performance.

这项研究旨在实现最低的基准温度（或结温），从而获得更好的热性能。设计了带有海豚鳍和矩形通道的梯形弯曲板翅式散热器（模型1）和带有海豚鳍，切角和矩形通道的梯形弯曲板翅式散热器（模型2），并与标准板进行了比较。散热片。数值研究了翅片对设计的板翅式散热器中气流和传热的影响。数值结果表明，翅片的使用和几何形状的微小变化显着提高了传热速率。研究结果表明，与标准板翅式散热器相比，在Model-1和Model-2中，对流传热增强分别为44-51％和57-62％。海豚鳍片的存在可将热阻降低多达30％，从而有助于设计的板翅式散热器的整体热增强。仿真结果表明，在靠近热源的区域增加散热片并减少非工作区域会显着影响散热器的热性能。结果还表明，具有不同通道翅片几何形状的梯形板翅式散热器在热性能方面优于标准的梯形板翅式散热器。