| Controlling Flow Turbulence Using Local Pinning Feedback |
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| 引用本文： | 唐国宁 胡岗. Controlling Flow Turbulence Using Local Pinning Feedback[J]. 中国物理快报, 2006, 23(6): 1523-1526 |
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| 作者姓名： | 唐国宁 胡岗 |
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| 作者单位： | [1]Department of Physics, Beijing Normal University, Beijing 100875 [2]College of Physics and Information Technology, Guangxi Normal University, Guilin 541004 [3]Beijing-Hong Kong-Singapore Joint Center of Nonlinear and Complex Systems, Beijing Normal University, Beijing 100875 |
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| 基金项目： | Supported by the National 973 Project of Nonlinear Science and the Natural Science Foundation of China under Grant Nos 10335010. |
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| 摘 要： |
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| 关 键 词： | 控制紊流 局部反馈 二维Navier-Stokes方程 最佳控制 |
| 收稿时间： | 2006-03-07 |
| 修稿时间： | 2006-03-07 |
Controlling Flow Turbulence Using Local Pinning Feedback |
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| TANG Guo-Ning,HU Gang. Controlling Flow Turbulence Using Local Pinning Feedback[J]. Chinese Physics Letters, 2006, 23(6): 1523-1526 |
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| Authors: | TANG Guo-Ning HU Gang |
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| Affiliation: | Department of Physics, Beijing Normal University, Beijing 100875College of Physics and Information Technology, Guangxi Normal University, Guilin 541004Beijing-Hong Kong-Singapore Joint Center of Nonlinear and Complex Systems, Beijing Normal University, Beijing 100875 |
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| Abstract: | Flow turbulence control in two-dimensional Navier-Stokes equation is considered. By applying local pinning control only to a single component of flow velocity field, the flow turbulence can be controlled to desirable targets. It is found that with certain number of controllers there exist an optimal control strength at which control error takes minimum value, and larger and smaller control strengths give worse control efficiency. The physical mechanism underlying these strange control results is analysed based on the interactions between different types of modes. |
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| Keywords: | 47.27.Rc 05.45.Gg |
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