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A mechanism for excitation of coherent structures in wall region of a turbulent boundary layer

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Abstract

The problem of how the coherent structures in the wall region of a turbulent boundary layer could be excited by the disturbances from the outer region was investigated by using direct numerical simulation (DNS) method. The results show that velocity disturbances at the upper boundary of the wall region could excite coherent structures in the wall region, thus offering a more comprehensive model for individual coherent structures.

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Authors and Affiliations

  1. Department of Mechanics, Tianjin University, 300072, Tianjin, P. R. China

    Zhang Dong-ming, Luo Ji-sheng & Zhou Heng

Authors
  1. Zhang Dong-ming
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  2. Luo Ji-sheng
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  3. Zhou Heng
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Additional information

Contributed by LUO Ji-sheng and ZHOU Heng

Project supported by the National Natural Science Foundation of China (No. 19732005) and the Liu Hui Center for Applied Mathematics, Nankai University and Tianjin University Corresponding author ZHOU Heng, Professor, Academician of Chinese Academy of Science

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Dong-ming, Z., Ji-sheng, L. & Heng, Z. A mechanism for excitation of coherent structures in wall region of a turbulent boundary layer. Appl Math Mech 26, 415–422 (2005). https://doi.org/10.1007/BF02465379

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  • DOI: https://doi.org/10.1007/BF02465379

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Chinese Library Classification

2000 Mathematics Subject Classification

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