| 平板湍流边界层底层的不稳定波 |
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| 引用本文： | 周恒. 平板湍流边界层底层的不稳定波[J]. 力学学报, 1988, 0(6) |
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| 作者姓名： | 周恒 |
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| 作者单位： | 天津大学 |
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| 摘 要： | 湍流边界层底层的相干结构及猝发现象对决定边界层的特性有很重要的意义,但直至现在对相干结构的性质及起因仍不清楚。在本文中,对湍流边界层的底层进行了非线性稳定性分析,发现该处确可产生不稳定波,可能用以说明相干结构的起因。
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| 关 键 词： | 相干结构 不稳定波 湍流边界层 |
INSTABILITY WAVES IN THE WALL REGION OF A TURBU-LENT BOUNDARY LAYER ON A FLAT PLATE |
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| Zhou Heng. INSTABILITY WAVES IN THE WALL REGION OF A TURBU-LENT BOUNDARY LAYER ON A FLAT PLATE[J]. chinese journal of theoretical and applied mechanics, 1988, 0(6) |
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| Authors: | Zhou Heng |
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| Affiliation: | Tianjin University |
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| Abstract: | Coherent structures and the bursting phenomena in the wall region of a turbulent boundary layer play a very important role in determining the characteristics of the boundary layer. Yet the nature and the origine of the coherent structures are unclear until now. In this paper, nonlinear stability calculations for the wall region of a turbulent boundary layer have been done. It was found that there do exist instability waves which may be responsible for the coherent structures. |
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| Keywords: | coherent structure instability waves turbulent boundary layer. |
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