为降低激光加热面的最高温度，提升热面温度均匀性，提出一种射流冲击强化表面的综合散热方法。引入兼顾散热和流阻特性的综合评价指标performance evaluation factor（PEC）进行数值研究并与传统微槽道散热特性进行了对比分析。结果表明，降低冲击距离会使冲击区边界层变薄，增大横向流动速度，涡心向中心入口处移动，以此提高换热效率，不仅降低了系统最高温度，而且实现了温度均匀性。经过对比发现无量纲射流冲击距离为0.25时PEC最大，因此该系统最适用于激光热源的散热。此外，热应力与应变分析结果表明，在同种材料的屈服极限下，该系统所能承受的激光热流密度明显高于微槽道冷却系统，换热性能更好、适用性更强。

To reduce the maximum temperature and improve the temperature uniformity of a laser heating surface, a comprehensive heat dissipation method for jet impingement strengthening of the surface is proposed. In this study, a performance evaluation factor (PEC) that considers both heat dissipation and flow resistance characteristics was introduced for numerical research and compared with traditional microchannel heat dissipation characteristics. Results show that reducing the impact distance causes the boundary layer in the impact zone to become thinner, increases the transverse flow velocity, and moves the vortex center to the central entrance, thereby improving the heat transfer efficiency. The reduced impact distance not only reduces the maximum temperature of the system, it also achieves temperature uniformity. A comparison with traditional microchannel heat dissipation characteristics reveals that the PEC reaches its maximum at a dimensionless jet impingement distance of 0.25, making this system suitable for heat dissipation of laser heat sources. In addition, the results of thermal stress and strain analysis indicate that under the yield limit of the same material, the highest laser heat flux density that the system can withstand is significantly greater than that of the microchannel cooling system, resulting in better heat transfer performance and greater applicability.