船模阻力数值水池试验不确定度评估

Uncertainty analysis on numerical computation of ship model resistance

文章针对水面船模阻力数值水池试验,开展了不确定度分析与评估研究。不确定度分析中,验证方法和流程基于正交设计和方差分析方法,确认方法和流程基于统计推断理论。以水面船标模DTMB5415为对象,进行了船模阻力数值水池试验不确定度分析评估的实例计算,给出了对数值试验结果有重要影响的试验因素和交互作用以及各类不确定度分量的大小,并提出了降低船模阻力数值试验不确定度的建议。

Some research work on uncertainty analysis on numerical computation of ship model resistance is carried out. The method and procedure of verification is based on orthogonal design and variance analysis methods. The method and procedure of validation are based on statistic inference theory. Uncertainty analysis and assessment on numerical computation of ship model resistance for DTMB5415 are carried out. Significant factors and their interactions which strongly effect on the result of computations and all uncertainty components are obtained. Some suggestions are put forward to lower the uncertainty in numerical com- putation for ship model resistance.