摘要
对转桨采用大侧斜形式能降低螺旋桨的线谱噪声,但同时也会降低叶片的强度和刚度,工程应用中需要对其强度进行校核。本文基于不可压缩流体"雷诺时均N-S方程+RSM湍流模型",采用多重参考系模型处理多旋转区域耦合问题,得到了螺旋桨表面压力分布;应用有限元(FEA)分析方法对叶片进行分析,得到叶片应力分布与变形量等参数。通过对大侧斜对转螺旋桨水动力及桨叶应力数值计算,为螺旋桨设计提供理论依据,具有一定的工程意义。
The application of high-skewed contra-rotating may reduce the line spectrum noise of the propeller.However,this method would also reduce the strength and stiffness of the blades,so it＇s necessary to calibrate the strength of the blades.Based on the Reyn-olds-averaged N-S equation and RSM turbulence model,we solve the multi-rotating area problem by multi-reference frame model,and obtained the surface stress distribution on the propeller.We also obtained the stress distribution and distortion on blades with FEA（finite element analysis） method.Numerical computations provide theoretical basis for the propeller design,which has some engineering value in applications.
出处
《舰船科学技术》
北大核心
2013年第6期11-14,共4页
Ship Science and Technology
关键词
大侧斜对转螺旋桨
水动力
应力
high-skewed contra-rotating propeller
hydrodynamic
stress
