振动半圆柱尾流中的二维摆动水翼推进性能研究  

Research on the propulsion performance of a two dimensional flapping hydrofoil in the wake ofan oscillating semicircular cylinder

作　　者：张曦[1] 苏玉民[1] 王兆立[1] 

机构地区：[1]哈尔滨工程大学水下智能机器人国防科技重点实验室,哈尔滨150001

出　　处：《船舶力学》2012年第4期333-341,共9页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(50879014);高等学校博士学科点专项科研基金资助项目(200802170010)

摘　　要：文章研究了粘性流场中半圆柱振动产生的旋涡对二维摆动水翼推进性能的影响。利用数值方法计算了振动半圆柱尾流中二维摆动水翼的水动力性能。计算结果表明,半圆柱涡和水翼涡之间存在4种相互作用模式。相反旋向的半圆柱涡和水翼涡相互作用时,摆动水翼的平均推力系数最大。相同旋向的半圆柱涡和水翼首缘涡相互作用并且最终融入到水翼尾缘涡时,摆动水翼能够从半圆柱涡中吸收能量。A study on the effects of vortices generated by an oscillating semicircular cylinder on the propulsion performance of a two dimensional flapping hydrofoil is presented. Hydrodynamic performance of a two dimensional flapping hydrofoil in the wake of an oscillating semicircular cylinder is analyzed by numerical simulations.The calculated results show that there are four modes of interaction between semicircular cylinder vortices and hydrofoil vortices.The largest mean thrust force coefficient occurs when semicircular cylinder vortices interacts with the contrarotating hydrofoil vortices.The flapping hydrofoil absorbs energy when semicircular cylinder vortices interacts with the current hydrofoil leading edge vortex and merges into the foil trailing edge vortex.

关 键 词：振动半圆柱 摆动水翼 推进性能 旋涡相互作用 

分 类 号：U661.43[交通运输工程—船舶及航道工程]