| 自由淹没气体旋转射流速度场实验研究 |
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| 引用本文： | 王凌,张景松,罗锐,彭晓峰.自由淹没气体旋转射流速度场实验研究[J].清华大学学报(自然科学版),2011(4):493-498. |
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| 作者姓名： | 王凌 张景松 罗锐 彭晓峰 |
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| 作者单位： | 清华大学热能工程系相变与界面传递现象实验室;中国矿业大学机电工程学院动力工程系; |
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| 摘 要： | 为研究自由淹没气体旋转射流速度场规律,采用五孔探针对自行设计的旋流器形成的流场进行定量实验研究。测量4种不同旋流强度下的流场,计算得到了各分速度在不同截面上的量纲一分布图,并进行分析研究。结果证实:轴向速度分布在旋流器出口附近区域与旋流强度有关,在与射流轴心垂直的截面上呈"M"形分布,逐渐发展成"马鞍"状、正态分布,直至衰减到零;切向速度呈中心对称斜"S"状分布,不同截面上的最大值大致出现在同一量纲一半径处;径向速度在半径方向呈"~"形分布,比轴向速度和切向速度小1个数量级;轴向速度和切向速度沿轴向逐渐衰减,衰减随旋流强度增大而增快。
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| 关 键 词： | 旋转射流 自由淹没 速度场 |
Experimental investigation of free and submerged swirling air jet velocity fields |
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| WANG Ling,ZHANG Jingsong,LUO Rui,PENG Xiaofeng.Experimental investigation of free and submerged swirling air jet velocity fields[J].Journal of Tsinghua University(Science and Technology),2011(4):493-498. |
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| Authors: | WANG Ling ZHANG Jingsong LUO Rui PENG Xiaofeng |
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| Institution: | WANG Ling1,ZHANG Jingsong2,LUO Rui1,PENG Xiaofeng1(1.Laboratory of Phase-Change and Interfacial Transport Phenomena,Department of Thermal Engineering,Tsinghua University,Beijing 100084,China,2.Department of Power Engineering,School of Mechatronic Engineering,China University of Mining and Technology,Xuzhou 221116,China) |
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| Abstract: | A self-designed swirling air jet device with a five-hole probe was used to quantitatively analyze the free and submerged swirling air jet velocity field.Flow fields were measured for four swirling intensities while dimensionless velocity component distributions on different sections were obtained to show that the axial velocity distribution is related to the swirling intensity in the region near the device outlet.On the vertical section,the swirling jet axial velocity profiles present an M-shaped distributi... |
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| Keywords: | swirling jets free and submerged velocity field |
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