Effect of the asymmetric geometry on the wake structures of a pitching foil<xref rid="cpb_27_11_114701fn1" ref-type="fn">*</xref><fn id="cpb_27_11_114701fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11502210, 51709229, 51879220, 51479170, and 61803306), the National Key Research and Development Program of China (Grant No. 2016YFC0301300), Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2018JQ5092).</p></fn>

Effect of the asymmetric geometry on the wake structures of a pitching foil**

Project supported by the National Natural Science Foundation of China (Grant Nos. 11502210, 51709229, 51879220, 51479170, and 61803306), the National Key Research and Development Program of China (Grant No. 2016YFC0301300), Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2018JQ5092).

Chao LiMing^{1, 2}, Pan Guang^{1, 2, †}, Zhang Dong^{1, 2}

(color online) Two examples of the numerical points in the (Sr, A_D) plane: (a) the wake phase diagram for K = 1, (b) the wake diagram for K = 1. +: P+S wake; □: BvK wake; ◯: rBvK wake; ▽: asymmetric wake; ■: aligned vortices (2S wake). Red dashdot line: BvKr–BvK transition boundary; black solid line: transition between the rBvK wake and the asymmetrical wake for an asymmetrical foil; black dash line: transition between the rBvK wake and the asymmetrical wake for a symmetrical foil (K = 0).