平面撞击流偏斜振荡影响因素的大涡模拟

doi:10.3969/j.issn.0438-1157.2013.07.007

化工学报 ›› 2013, Vol. 64 ›› Issue (7): 2353-2359.DOI: 10.3969/j.issn.0438-1157.2013.07.007

平面撞击流偏斜振荡影响因素的大涡模拟

屠功毅, 李伟锋, 黄国峰, 王辅臣

华东理工大学煤气化及能源化工教育部重点实验室, 上海 200237

收稿日期:2012-11-27 修回日期:2013-03-17 出版日期:2013-07-05 发布日期:2013-07-05
通讯作者: 李伟锋
作者简介:屠功毅(1987- ),男,博士研究生。
基金资助:
国家重点基础研究发展计划项目(2010CB227004)。

Large-eddy simulation of influencing factors of deflecting oscillation of planar opposed jets

TU Gongyi, LI Weifeng, HUANG Guofeng, WANG Fuchen

Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

Received:2012-11-27 Revised:2013-03-17 Online:2013-07-05 Published:2013-07-05
Supported by:
supported by the National Basic Research Program of China (2010CB227004).

摘要/Abstract

摘要： 采用大涡模拟对35≤Re≤145000、4≤L/h≤40范围内的平面撞击流偏斜振荡特性进行了研究。通过对平面撞击流模拟与实验结果的比较验证了数值模拟的可靠性,重点考察了不同流体介质、边界受限程度及喷嘴出口高宽比等因素对平面撞击流偏斜振荡特性的影响,并对平面撞击流发生偏斜振荡的量纲1参数范围进行划分。研究结果表明,不同流体介质对平面撞击流量纲1偏斜振荡周期几乎没有影响,量纲1偏斜振荡周期随着边界受限程度的增大而增大,随着喷嘴出口高宽比的增大而减小。

关键词: 平面撞击流, 偏斜振荡, 影响因素, 大涡模拟

Abstract: The deflecting oscillation of planar opposed jets was numerically simulated by large-eddy simulation (LES)at 35≤Re≤145000 and 4≤L/h≤40(where L was the nozzles separation,and h was the height of the slit of the planar nozzle).The numerical results were validated by comparing with experimental results of planar opposed jets.The influencing factors of the deflecting oscillation of turbulent planar opposed jets,such as different work fluids,confinement of boundary and height-to-width ratio of nozzle exit,were investigated,and a map of the parameter space describing the deflecting oscillation of planar opposed jets was plotted.The results showed that various fluids had no significant influence on the periods of the deflecting oscillation,and the dimensionless periods of the deflecting oscillation increased with increasing confinement of boundary,but decreased with increasing height-to-width ratio of nozzle exit.

Key words: planar opposed jets, deflecting oscillation, influencing factors, large-eddy simulation

中图分类号:

TQ021.1

屠功毅, 李伟锋, 黄国峰, 王辅臣. 平面撞击流偏斜振荡影响因素的大涡模拟[J]. 化工学报, 2013, 64(7): 2353-2359.

TU Gongyi, LI Weifeng, HUANG Guofeng, WANG Fuchen. Large-eddy simulation of influencing factors of deflecting oscillation of planar opposed jets[J]. CIESC Journal, 2013, 64(7): 2353-2359.

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平面撞击流偏斜振荡影响因素的大涡模拟

Large-eddy simulation of influencing factors of deflecting oscillation of planar opposed jets

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