Active control of wall-bounded turbulence for drag reduction with piezoelectric oscillators
Active control of wall-bounded turbulence for drag reduction with piezoelectric oscillators
复制标题
利用压电振荡器主动控制壁面湍流以减少阻力
DOI:
10.1088/1674-1056/27/7/074701
复制
发表时间:
2018-07
影响因子:
1.7
通讯作者:
Cui Xiaotong
中科院分区:
文献类型:
--
作者:
Bai Jianxia;Jiang Nan;Zheng Xiaobo;Tang Zhanqi;Wang Kangjun;Cui Xiaotong
An experimental investigation was performed for active control of coherent structure bursting in the near-wall region of the turbulent boundary layer. By means of synchronous and asynchronous vibrations with double piezoelectric vibrators, the influence of periodic vibration of the double piezoelectric vibrators on the mean velocity profile, drag reduction rate, and coherent structure bursting is analyzed at Re θ= 2766. The case with 100 V/160 Hz-ASYN is superior to other conditions in the experiment and a relative drag reduction rate of 18.54% is exciting. Asynchronous vibration is more effective than synchronous vibration in drag reduction at the same voltage and frequency. In all controlled cases, coherent structures at large scales are regulated while the small-scale structures are stimulated. The fluctuating velocity increases significantly. A periodic regulating effect on the coherent structure can be seen in the ASYN control conditions at the frequency of 160 Hz.
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影响因子:
27.7
作者:
G. Karniadakis;K. Choi
通讯作者:
G. Karniadakis;K. Choi
DOI:
10.1007/s11431-008-0062-4
发表时间:
2008-06
期刊:
Science in China Series E: Technological Sciences
影响因子:
--
作者:
Hongguang Jin;Xiliang Zhang;Lin Gao;Li Yue;Jiankun He;R. Cai
通讯作者:
Hongguang Jin;Xiliang Zhang;Lin Gao;Li Yue;Jiankun He;R. Cai
影响因子:
3.5
作者:
J. Nan;Zhang Jin
通讯作者:
J. Nan;Zhang Jin
影响因子:
1.9
作者:
M. Itoh;Shinji Tamano;K. Yokota;Shinya Taniguchi
通讯作者:
M. Itoh;Shinji Tamano;K. Yokota;Shinya Taniguchi
影响因子:
3.7
作者:
KIM, HT;KLINE, SJ;REYNOLDS, WC
通讯作者:
REYNOLDS, WC