文献类型：期刊文献

英文题名：Study on Factors Influencing Stagnation Point Offset of Turbulent Opposed Jets

作者：Li, Wei-Feng[1];Yao, Tian-Liang[1];Wang, Fu-Chen[1]

机构：[1]E China Univ Sci & Technol, Key Lab Coal Gasificat, Minist Educ, Shanghai 200237, Peoples R China

年份：2010

卷号：56

期号：10

起止页码：2513

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20104613384512);WOS:【SCI-EXPANDED(收录号:WOS:000282288400003)】；

基金：This study was supported by the National Development Programming of Key Fundamental Researches of China (2010CB227004) and the Natural Science Foundation of China (20906024). Especially, the authors add their thanks to the anonymous reviewers for their helpful suggestions on the quality improvement of their article.

语种：英文

外文关键词：turbulent opposed jets; visualization; instability; stagnation point offset; computational fluid dynamics (CFD)

摘要：Turbulent opposed jets were experimentally studied by the hot-wire anemometer measurement, the smoke-wire flow visualization, and the CFD simulation at L = 1-20D (where L is the nozzle separation and D is the nozzle diameter) and Re >4500. The instability pattern of turbulent opposed jets was identified by investigating the smoke-wire photos recorded by a high-speed camera. The factors affecting stagnation point offset, such as the bulk velocity, the velocity profile, and the turbulence intensity at the nozzle exits were investigated. Results show that the stagnation point offset is the main instability regime of turbulent opposed jets. Uniform exit velocity profile and increasing exit turbulence intensity will decrease the stagnation point offset of turbulent opposed jets. (C) 2010 American Institute of Chemical Engineers AIChE J, 56: 2513-2522, 2010