Abstract
In this paper, the differences of turbulent coherent structure between the smooth and rough boundary layers are analysed. Based on the discussing the transient properties from the smooth wall to the rough wall, the physical model of coherent structure for the rough boundary layer are established. The width of slowly-moving turbulent spot and the bursting time are obtained, which are in agreement with experimental results.
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The project supported by the National Nature Science Foundation of China
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Yulu, L., Shutang, C. On the mechanism of turbulent coherent structure(II) —A physical model of coherent structure for the rough boundary layer. Appl Math Mech 17, 197–203 (1996). https://doi.org/10.1007/BF00193616
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DOI: https://doi.org/10.1007/BF00193616