华中科技大学学报（自然科学版）Issue(2)：15-20,6.DOI:10.13245/j.hust.160204
非正弦摆动对水翼水动力性能的影响
Effects of the nonsinusoidal oscillating on the hydrodynamic performance of the hydrofoil
摘要
Abstract
In consideration of the poor hydrodynamic performance of the routine sinusoidal oscillating hydrofoil in high Strouhal Number (St) condition ,various adjusted nonsinusoidal motions were nu‐merically simulated for improving it ,basing on the RANS solver and the module of DFBI (dynamic fluid body interaction) of the computational fluid dynamic (CFD) software .The cause and trend of the hydrodynamic descent were also investigated for the routine motion .The results indicate that the wake vortex forms change from a reverse Karman street to single row vortex for the routine motion , when the St increase .It causes the rapid decline of hydrodynamic .And the critical value of St ascends with the maximal angle of attack .In appropriate range of St ,the adjusted motions can effectively im‐prove the thrust and efficiency of the hydrofoil .And the effective angle is more flat ,the added value of thrust will ascend more when the maximal angle of attack is less than 20° ,or it will descend more .关键词
水动力/水翼/斯特哈尔数/尾涡/最大攻角Key words
hydrodynamic/hydrofoil/Strouhal Number/wake vortex/maximal angle of attack分类
数理科学引用本文复制引用
刘焕兴,苏玉民,庞永杰..非正弦摆动对水翼水动力性能的影响[J].华中科技大学学报（自然科学版）,2016,(2):15-20,6.基金项目
国家自然科学基金资助项目（51479039）． （）
