文章摘要
娄本强,嵇春艳.船用螺旋桨流固耦合振动特性分析[J].,2019,59(2):154-161
船用螺旋桨流固耦合振动特性分析
FSI vibrations characteristics analysis of marine propeller
  
DOI:10.7511/dllgxb201902007
中文关键词: 螺旋桨振动  流固耦合(FSI)  瞬态激励实验  直接耦合数值计算  经验公式法
英文关键词: propeller vibration  fluid-structure interaction (FSI)  transient modal experiment  strong coupling numerical simulation  formula estimation methods
基金项目:江苏高校优势学科建设工程资助项目(PAPD).
作者单位
娄本强,嵇春艳  
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中文摘要:
      在船舶航行中,应避免激振力的频率与螺旋桨叶片固有频率接近而产生的共振,达到避振效果.分别使用直接耦合数值计算和瞬态激励实验方法,研究了某实桨叶片在空气中和浸入静水域中的固有流固耦合(FSI)振动特性.结果表明:数值计算与实验结果吻合较好;直接耦合法具有精度高和收敛性好的优点.根据工程实际要求,提出了螺旋桨叶片首阶振动频率的经验公式,估算精度满足要求,具有节省时间、提高效率的优点.
英文摘要:
      On the voyage of merchant vessel, it is necessary to avoid the resonance when the hydro excited force drives the propeller around a specific frequency. Strong coupling numerical simulation and transient modal experiment are used to analyze the natural fluid-structure interaction (FSI) vibration characteristics of propeller blades in air and in immersed still water field. It is discovered among the results that good agreement is achieved between FEM and experiment; furthermore, strong coupling numerical simulation has the merit of quick convergence and high precision. According to the practical demand of industry, a simple formula is brought out for the prediction of fundamental frequency, which has a great advantage of accuracy, and being time efficient for initial design.
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