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The influence of phase difference and moving amplitude of rolling and pitching composite motion on propulsion performance is researched and the change of wake stream field is analyzed. The results show that the hydrodynamic performance of bionic humpback whale flapping foil is better, whose average thrust in one cycle and the maximum propulsive efficiency increase with the increasing flapping frequency; the propulsion performance of rolling and pitching composite motion is superior to that of pure rolling motion, and its better values of phase difference and moving amplitude are respectively 90\u00b0 and 6\u00b0; the leading edge vortex appears two times in one cycle, consistent with the instantaneous thrust numerical results. This method provides a reference value for the design and application of AUV.<\/jats:p>","DOI":"10.3233\/jifs-179827","type":"journal-article","created":{"date-parts":[[2020,5,19]],"date-time":"2020-05-19T11:56:56Z","timestamp":1589889416000},"page":"7553-7562","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Numerical analysis of hydrodynamic performance of biomimetic flapping foils based on the RANS method"],"prefix":"10.1177","volume":"38","author":[{"given":"Jun-ming","family":"Hu","sequence":"first","affiliation":[{"name":"School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang, China"}]},{"given":"Yan-ru","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang, China"}]},{"given":"Gang","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang, China"}]},{"given":"Zhi-qiang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Naval Architecture and Ocean Engineering, Dalian University of Technology, Dalian, China"}]}],"member":"179","published-online":{"date-parts":[[2020,5,18]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1006\/jcph.1997.5716"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.euromechflu.2009.06.001"},{"key":"e_1_3_2_4_2","first-page":"379","article-title":"Numerical simulation of laminar-turbulent transition on a dolphin using the \u03b3\u00a0-\u00a0Re model","volume":"32","author":"Riedeberger D.","year":"2012","unstructured":"RiedebergerD., RistU., Numerical simulation of laminar-turbulent transition on a dolphin using the \u03b3\u00a0-\u00a0Re model, High Performance Computing in Science and Engineering32 (2012), 379\u2013391.","journal-title":"High Performance Computing in Science and Engineering"},{"issue":"1","key":"e_1_3_2_5_2","first-page":"93","article-title":"Comparative study on the propulsive performance of underwater Bionic thrusters with different transmission methods","volume":"26","author":"Xu H.J.","year":"2010","unstructured":"XuH.J., PanC.Y., ZhangD.B., XieH.B., Comparative study on the propulsive performance of underwater Bionic thrusters with different transmission methods, Mechine Design and Research26(1) (2010), 93\u201396.","journal-title":"Mechine Design and Research"},{"key":"e_1_3_2_6_2","doi-asserted-by":"crossref","unstructured":"JonesK.D. 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