期刊
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW
卷 29, 期 1, 页码 167-177出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ijheatfluidflow.2007.09.006
关键词
drop impact; nucleate boiling; Leidenfrost regime; secondary atomisation; Phase Doppler Anemometry; image analysis
The paper reports an experimental study of single millimetric water drop impacts onto a hot aluminium alloy (AlMg3) surface. The main aim of this investigation was to evidence the effect of the heat transfer mechanism on the secondary atomisation, but the effect of impact velocity and surface characteristics on the impact outcomes were also studied. Two non-intrusive measurement techniques, namely Phase Doppler Anemometer and image analysis, were used to describe the time evolution of the secondary droplet diameters and to study the effect of surface temperature, surface roughness and impact velocity on the impact outcomes. The morphology of drop impact is described for two different boiling regimes and quantitative results about the arithmetic mean and Sauter mean diameters of the secondary droplets are reported. An attempt to correlate the Sauter mean diameter of secondary drops with the nominal surface temperature is also reported. (C) 2007 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据