| ON THE MECHANISM OF TURBULENT COHERENT STRUCTURE(II)──A PHYSICAL MODEL OF COHERENT STRUCTURE FOR THE ROUGH BOUNDARY LAYER |
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| 摘 要： | ![]()
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| 收稿时间： | 1995-04-03 |
On the mechanism of turbulent coherent structure(II) —A physical model of coherent structure for the rough boundary layer |
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| Liu Yulu,Cai Shutang. On the mechanism of turbulent coherent structure(II) —A physical model of coherent structure for the rough boundary layer[J]. Applied Mathematics and Mechanics(English Edition), 1996, 17(3): 197-203. DOI: 10.1007/BF00193616 |
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| Authors: | Liu Yulu Cai Shutang |
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| Affiliation: | (1) Shanghai Inst. of Appl. Math. and Mech., Shanghai University, 200072 Shanghai, Peoples Republic of China |
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| 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.The project supported by the National Nature Science Foundation of China |
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| Keywords: | turbulent theory coherent structure rough boundary layer |
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