周期性摆动 meaning in English

periodic swinging

Since these theoretical analyses are based on inviscid potential flow theory , theoretical calculation and computational simulation may complement each other . the hydrodynamics and undulating propulsion of specimens were studied using three dimensional computational fluid dynamics ( cfd ) modeling . the cfd analysis using kinematic model of undulatory dorsal / median fin draws a series of conclusions , which include that the body drag increases significantly with the lateral body oscillation ; the body drag is minimum while the start point of
计算结果表明游动过程中的形体阻力随侧向周期性摆动而增大;当背鳍前端位于身体侧向最宽处时,形体阻力具有局部最小值,结论与实验观测结果相吻合;在实验观测的典型运动参数下,波动面的运动方程中的非对称因素的出现使推进力增大约1 . 10倍。