计算力学学报2017，Vol.34Issue(5)：586-590,5.DOI:10.7511/jslx201705008
摆动方式对水翼输入功率的影响
Effects of different flapping ways on input power of a hydrofoil
摘要
Abstract
A projected immersed boundary method is used to simulate a flapping foil ,w hich is a two-dimensional NACA0012 hydrofoil with Reynolds number Re=800 .The influence of the input power in different flapping ways is studied .The maximum pendulum angleθ0 is 75° ,the frequency f is from 0 .1 Hz to 0 .2 Hz and the non-sinusoidal pendulum parameter is from one to three .The results show that , firstly ,the averaged input-power coefficient increases with parameters f and β,however ,it undergoes a rapid ascent when f >0 .16 Hz ,β>2 .5 .Secondly ,the maximum input-power coefficient also increases with βat f=0 .16 Hz ,moreover ,the location of maximum input-power coefficient is related to β.Finally , lift force and drag force are connected with trailing edge vortex .Specifically ,the negative vortex on the top surface produces resistance ,and the negative vortex on the bottom surface induces lift force ,which affects the input power of the flapping hydrofoil .关键词
水翼/主动摆动/投影浸入边界法/输入功率/尾流发展Key words
hydrofoil/flapping/projected immersed boundary method/input power/wake evolution分类
数理科学引用本文复制引用
李伟忠,王文全,闫妍..摆动方式对水翼输入功率的影响[J].计算力学学报,2017,34(5):586-590,5.基金项目
国家自然科学基金(51479085 ,11262008 ) （51479085 ,11262008 ）
霍英东青年基金(141120)资助项目 . （141120）
