This Article Full Text (PDF) All Versions of this Article: 0734904109339615v1 27/6/545    most recent References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Scopus Google Scholar Articles by Wang, X.-S. Articles by Xu, H.-L. Social Bookmarking                         What's this?

Experimental Study on the Interaction of a Water Drop Impacting on Hot Liquid Surfaces

State Key Laboratory of Fire Science, University of Science and Technology of China, Jinzhai Road 96, Hefei, Anhui 230026, P.R. China, wxs{at}ustc.edu.cn

Xiang-Di Zhao

State Key Laboratory of Fire Science, University of Science and Technology of China, Jinzhai Road 96, Hefei, Anhui 230026, P.R. China

YI Zhang

State Key Laboratory of Fire Science, University of Science and Technology of China, Jinzhai Road 96, Hefei, Anhui 230026, P.R. China

Xin Cai

State Key Laboratory of Fire Science, University of Science and Technology of China, Jinzhai Road 96, Hefei, Anhui 230026, P.R. China

Rui Gu

State Key Laboratory of Fire Science, University of Science and Technology of China, Jinzhai Road 96, Hefei, Anhui 230026, P.R. China

Hong-Li Xu

State Key Laboratory of Fire Science, University of Science and Technology of China, Jinzhai Road 96, Hefei, Anhui 230026, P.R. China

This article presents the results of experimental investigation of water drop impacting on surfaces of different fuel liquids, such as alcohol, kerosene, and molten-ghee, which are typical fuels for liquid pool fire study or typical fire source in historical buildings. Each of the liquids was heated to simulate the temperature conditions as it burns, although the temperature is still a little lower than the real one. The impacting processes were recorded using a high-speed digital camera with 1000fps. The results show that the liquid physical properties, such as surface tension, viscosity, and miscibility, have primary influences on the drop impact behavior except for drop Weber number, and liquid temperature mainly influences the size of the splashed drops and bouncing height of the jet. The drop liquid is ejected for water—alcohol impact, while the bulk liquid is ejected for water—kerosene impact. The drop immersed into the liquid when it impacts on molten-ghee surface, no splashing and drop rebounding occur in this case.

Key Words: drop impact • droplet splashing • droplet bouncing • water mist • fire suppression.

This version was published on November 1, 2009

Journal of Fire Sciences, Vol. 27, No. 6, 545-559 (2009)
DOI: 10.1177/0734904109339615


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?