华中科技大学学报（自然科学版）2024，Vol.52Issue(4)：106-112,7.DOI:10.13245/j.hust.240083
基于GUM法的螺旋桨桨帽鳍试验不确定度分析
Uncertainty analysis of propeller boss cap fin test based on GUM method
摘要
Abstract
Based on international standards and referring to national metrological specifications,a detailed analysis was conducted on the factors affecting the energy-saving effect of propeller boss cap fin tests,and uncertainty calculations were conducted.First,the uncertainty components of each link in the hydrodynamic performance test before and after the propeller boss cap fin was installed by GUM(guide to the expression of uncertainty in measurement)method were sorted out.According to the uncertainty measurement equation,the impact of type A and type B uncertainty on the test results was determined.Then,30 times repeated tests were conducted on the hydrodynamic performance of a certain oil tanker propeller before and after the installation of the propeller cap fins.Experimental results show that under 95%inclusion probability,the expanded uncertainty of thrust is not higher than 0.25%,the expanded uncertainty of torque is not higher than 0.5%,and the expanded uncertainty of propeller efficiency is not higher than 0.45%.The uncertainty of this experiment can meet the higher requirements of the propeller cap fin test.The results obtained by Monte Carlo method and GUM method are compared,and they are in good agreement,verifying the applicability of the GUM method.关键词
桨帽鳍/GUM法/不确定度/蒙特卡罗法/水动力性能Key words
propeller boss cap fin/GUM method/uncertainty/Monte Carlo method/hydrodynamic performance分类
交通工程引用本文复制引用
孙硕,伍锐,刘恒,陈伟奇..基于GUM法的螺旋桨桨帽鳍试验不确定度分析[J].华中科技大学学报（自然科学版）,2024,52(4):106-112,7.基金项目
高技术船舶科研项目(工信部重装函[2020]307号). （工信部重装函[2020]307号）
