摘要
采用分离涡模型(DES)对伴流场中螺旋桨的轴承力进行数值计算,得到轴承力的时域值,通过傅里叶变换得到频域脉动值并分析了轴承力的频域特性。将桨叶表面压力脉动作为旋转偶极子声源,采用Virtual.Lab基于直接边界元方法计算了螺旋桨的无空泡噪声,分析了螺旋桨轴承力与噪声的关系以及噪声指向性。
Based on Detached Eddy Simulation（DES）,bearing force of a five-blade highly skewed propeller in nonuniform flow field is calculated.The frequency-dependent bearing force fluctuation is obtained and analyzed by transforming time-dependent data.The pressure fluctuation is put as acoustic rotating dipole,then non-cavitation noise of the propeller is calculated by the method of direct boundary element method in acoustic software Virtual.Lab.The relation between propeller bearing force and its noise spectrum and directivity is explored.
作者
杨光
房毅
冯鹏飞
YANG Guang, FANG Yi, FENG Peng-fei(No. 91439 Unit of PLA, Dalian 116041, Chin)
出处
《舰船科学技术》
北大核心
2018年第1期46-51,共6页
Ship Science and Technology
基金
国家自然科学基金资助项目(51179198)
关键词
螺旋桨
轴承力
旋转偶极子
无空泡噪声
propeller
bearing force
acoustic rotating dipole
non-cavitation noise
