文献类型：期刊文献

英文题名：Experimental and numerical study on stagnation point offset of turbulent opposed jets

作者：Li Weifeng[1];Sun Zhigang[1];Liu Haifeng[1];Wang Fuchen[1];Yu Zunhong[1]

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

年份：2008

卷号：138

期号：1-3

起止页码：283

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20081211159777);WOS:【SCI-EXPANDED(收录号:WOS:000255100300034)】；

语种：英文

外文关键词：opposed jets; stagnation point offset; CFD; Reynolds stress model; smoke-wire technique; hot-wire anemometer

摘要：The stagnation point offsets of turbulent opposed jets at various exit velocity ratios and nozzle separations were experimentally studied by a hot-wire anemometer, smoke-wire technique and numerically simulated by Reynolds stress model (RSM). Results show that for 2D <= L <= 4D (where L is nozzle separation and D is nozzle diameter), the position of the impingement plane is unstable and oscillates within a region between two relative stable positions when the exit velocities are equal. However, the impingement plane deviates from the midpoint obviously and the flow field becomes stable relatively when there is very small difference of the exit velocities for opposed jets of 2D <= L <= 8D. At L <= 2D or L > 8D, the position of stagnation point becomes insensitive to the variety of exit velocity ratio. (C) 2007 Elsevier B.V. All rights reserved.