CAJ | 학술논문

为了改善拖曳水池的试验精度，对一条4．5m 潜艇标模 SUBOFF 进行重复拖曳阻力试验。本文参照 IT-TC 推荐规程中试验流体动力学不确定度分析规范，对由偏差极限引起的不确定度将由潜艇标模的几个外形、速度、阻力、以及温度、密度和粘性这几个测量系统分别进行估算；通过6次重复潜艇标模阻力试验结果的标准差分析，得到了摩擦阻力系数、总阻力系数的精密度极限；最后对该模型的摩擦阻力系数、总阻力系数进行了不确定度分析。结果表明：由温度引起的运动粘性系数的偏差极限占到摩擦阻力系数偏差极限的97％；总阻力系数的偏差极限98％来自于湿表面积的偏差极限；随着试验速度的提高，总阻力系数和剩余阻力系数的总不确定度降低。
위료개선타예수지적시험정도，대일조4．5m 잠정표모 SUBOFF 진행중복타예조력시험。본문삼조 IT-TC 추천규정중시험류체동역학불학정도분석규범，대유편차겁한인기적불학정도장유잠정표모적궤개외형、속도、조력、이급온도、밀도화점성저궤개측량계통분별진행고산；통과6차중복잠정표모조력시험결과적표준차분석，득도료마찰조력계수、총조력계수적정밀도겁한；최후대해모형적마찰조력계수、총조력계수진행료불학정도분석。결과표명：유온도인기적운동점성계수적편차겁한점도마찰조력계수편차겁한적97％；총조력계수적편차겁한98％래자우습표면적적편차겁한；수착시험속도적제고，총조력계수화잉여조력계수적총불학정도강저。
To improve the test accuracy in the towing tank,repeated resistance tests of the submarine standard model were conducted.According to ITTC recommended procedures and guidelines for uncertainty analysis in experimental liquid dynamics,the test results were ana-lyzed.Uncertainty is caused by the bias limits related to the submarine standard model geomet-rical form,velocity,resistance,temperature,density and kinematical viscosity,and accordingly the bias limits were calculated.The standard deviation was got by six repeated resistance tests, and then the precision limits were calculated.The total uncertainty was estimated.The results show that,the bias limits of the kinematical viscosity coefficient caused by temperature uncer-tainty contributes to 97% of the bias limits of the friction resistance coefficient;98% of the bias limits of the total resistance coefficient comes from the bias limits of the wet surface area;as the test velocity increases,the total uncertainty of the total resistance coefficient and friction resist-ance coefficient reduces.