一、前言 近年来,液滴和壁面碰击时的传热已成为一个受广泛注意的课题。由于涉及到液滴与加热面碰击以后的流体动力学,问题变得十分复杂。Engel,施等研究了下降液滴在壁面上的扩展动力学问题。Wachters,Toda,Nishio研究了运动液滴和加热面之间的传热过程。本文测定了液滴碰击后表面温度的瞬变特性,分析了包括扩展阶段在内的 I. Introduction In recent years, the heat transfer during drop and wall impact has become a subject of widespread attention. The problem becomes very complicated due to the fluid dynamics involved in the impact of the droplet against the heated surface. Engel, Shi et al. Studied the problem of expanding kinetics of descending droplets on the wall. Wachters, Toda, Nishio studied the heat transfer between moving droplets and heating surfaces. In this paper, the transient characteristics of the surface temperature after drop impact were measured, including the expansion phase