Forces and energetics of intermittent swimming 
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期刊名称Acta Mechanica Sinica
作者Daniel Floryan; Tyler Van Buren; Alexander J. Smits
栏目THEMED ARTICLES FOR CCTAM 2017 SPECIAL ISSUE-FLUID MECHANICS
摘要Experiments are reported on intermittent swimming motions. Water tunnel experiments on a nominally two-dimensional pitching foil show that the mean thrust and power scale linearly with the duty cycle, from a value of 0. 2 all the way up to continuous motions, indicating that individual bursts of activity in intermittent motions are independent of each other. This conclusion is corroborated by particle image velocimetry (PIV) flow visualizations, which show that the main vortical structures in the wake do not change with duty cycle. The experimental data also demonstrate that intermittent motions are generally energetically advantageous over continuous motions. When metabolic energy losses are taken into account, this conclusion is maintained for metabolic power fractions less than 1.
英文栏目名称THEMED ARTICLES FOR CCTAM 2017 SPECIAL ISSUE-FLUID MECHANICS
关键词Unsteady propulsion; Burst and coast; Bio-inspired
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2017
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开始页码725
结束页码732
DOI10.1007/s10409-017-0694-3
基金项目This work was supported by the US Office of Naval Research (Grant N00014-14-1-0533) (Program Manager Robert Brizzolara). We would also like to thank Dr. Keith Moored for stimulating our interests in intermittent swimming.
点击率225
作者地址Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA

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