| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Mechanism Analysis of One-Dimensional Quasiperiodic Groove Drag-Reduction |
| XUE Wen-Hui, GENG Xing-Guo, LI Jie, LI Feng, WU Jun
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| Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072 |
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| Cite this article: |
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XUE Wen-Hui, GENG Xing-Guo, LI Jie et al 2010 Chin. Phys. Lett. 27 104703 |
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Abstract Grooves arranged in one-dimensional quasiperiodic patterns are prepared by mechanical method. Drag reduction experiments are performed by R/S plus rheometer and the results show that there is a novel drag reduction effect compared with periodic grooves. An equivalent grating model is proposed to investigate the mechanism. It is found that, in comparison with periodic grating, the intensity distributes more uniform in a limited area when the coherent wave gets through quasiperiodic grating. Corresponding to the quasiperiodic grooves, the energy transfers more uniform, which could inhibit the generation of large vortices.
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| Keywords:
47.27.De
47.27.Rc
47.27.Er
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Received: 13 June 2010
Published: 26 September 2010
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