一、前言 空冷式翅片热交换器的翅片排列方式对传热有很大影响。虽然已不断开发了各种高效紧凑式换热器,但设计还停留在经验阶段。可视化实验也停留在水力模型实验上,用铝粉或氢气泡的踪迹法观察其流线情况,至今还没见到利用激光全息摄影干涉法测定受迫运动情况下翅片周围温度场分布的文献发表。本研究是试图利用此技术测出受迫运 I. Introduction Air-cooled fin heat exchanger fin arrangement has a great influence on heat transfer. Although a variety of efficient compact heat exchangers have been continuously developed, the design is still at an empirical stage. The visualization experiment also stays on the hydraulic model experiment, and observes its flow field with trace of aluminum powder or hydrogen bubble. Up to now, no literature has been found on the distribution of temperature field around the fins under the condition of forced movement by using laser holographic interferometry Posted. This study attempts to use this technique to detect forced transport