| 平面斜向剪切流中相干结构的形成、特征及其发展规律的实验研究 |
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| 引用本文： | 李克文,魏中磊,苏先基,李炜谱,周培源. 平面斜向剪切流中相干结构的形成、特征及其发展规律的实验研究[J]. 北京大学学报(自然科学版), 1994, 0(5) |
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| 作者姓名： | 李克文 魏中磊 苏先基 李炜谱 周培源 |
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| 作者单位： | 北京大学力学系 |
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| 摘 要： | 本文用两种纹影显示方法对平面斜向自由剪切层的流动特性进行了实验研究，揭示了其中的流动结构尤其是螺旋涡的一些变化规律和特征，并对实验方法进行了完善和改进。
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| 关 键 词： | 涡；剪切流；相干结构；流动显示 |
Investigation on the Development ,Characteristic and Movement of the Coherent Strcture in a Plane Free Cross Mixing Layers |
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| LI Kewen WEI Zhonglei SU Xianji LI Weipu. Investigation on the Development ,Characteristic and Movement of the Coherent Strcture in a Plane Free Cross Mixing Layers[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 1994, 0(5) |
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| Authors: | LI Kewen WEI Zhonglei SU Xianji LI Weipu |
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| Abstract: | An experimental study was performed for the flow characteristics of a plane free cross mixing layers by flow visualization. Observations for the develop-ment of the coherent structures in a Air/CO_2 mixing layers were made by two kinds of spark shadowgraph methods(one was a new shadowgraph method). Analyses and explorations were conducted for some aspects of the characteristics, formation and development of the helical structure in the mixing layers. In addition,this paper also analyzed the effects of velocity ratio and angle between the cross streams on the for-mation and development of the helical structures. |
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| Keywords: | vortex mixing layers coherent structure flow visualization |
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