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论文类型：期刊论文

发表时间：2014-02-01

发表刊物：EXPERIMENTAL THERMAL AND FLUID SCIENCE

收录刊物：SCIE、EI、Scopus

卷号：53

页面范围：244-250

ISSN号：0894-1777

关键字：Drop impact; Solid sphere; Circular liquid sheet

摘要：Experimental observations during a single liquid drop impinging onto a static hemispherical drop on steel spheres are performed using a high speed digital camera at 10,000 frames per second. The sphere-drop curvature ratio ranges in 0.139-0.558 and the 30 vol.% glycerol/water solution and water are selected as experimental fluids. By increasing the Weber number, experimental observations present outcomes of rebound, coalescence, and the circular liquid sheet successively. The circular liquid sheet diameter increases with the Weber number and Reynolds number. With the decrement in the curvature ratio, the liquid sheet diameter varies less at the initial stage, while after the maximum value, the smaller curvature ratio will lead to the larger liquid sheet diameter. (C) 2013 Elsevier Inc. All rights reserved.