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雾化与喷雾
影响因子: 1.737 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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雾化与喷雾

DOI: 10.1615/AtomizSpr.2014007382
pages 875-893

EFFECTS OF SINGLE AND DOUBLE STREAMS OF DROPLET IMPINGEMENTS ON SURFACE COOLING

Taolue Zhang
Department of Engineering Technology and Industrial Distribution, Texas A&M University, College Station, Texas, USA 77843
Hsin-Min Tsai
Department of Engineering Technology and Industrial Distribution, Texas A&M University, College Station, Texas, USA 77843
Jorge L. Alvarado
Dept. of Engineering Technology and Industrial Distribution, Texas A&M University, College Station, Texas, 77843, USA

ABSTRACT

This paper explores the effects of high-frequency impinging droplets on surface cooling. A single stream of impinging droplets at different impact angles was studied by measuring the surface temperature distribution and characterizing the impact crater morphology under different heat flux conditions. Film thickness inside the droplet impact craters was measured to understand the relationship between film thickness and impact angle. Additionally, double streams of impinging droplets at different impact spacings and impact angles were investigated. The optimum spacing between adjacent droplet streams was found to reduce droplet-to-droplet collision and splashing, resulting in enhanced heat transfer and better use of the cooling fluid.


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