An Innovative Methodology of Confidence Level Assessment for Virtual Test of Ship Hydrodynamics

An innovative methodology of confidence level assessment for virtual test of ship model hydrodynamics is presented in this paper. The methodology is based on the procedure of "uncertainty analysis, validation of optimal solution, validation by big sample data". In which the uncertainty analysis is based on orthogonal design and variance analysis methods and statistic inference theory, the validation of optimal solution is based on effect analysis in orthogonal design and principle of minimum deviation; the virtual test method is validated by statistical analysis of comparison with a large numbers of experimental data. The procedure is applied to practice with virtual test of ship model resistance, and shows that the methodology of confidence level assessment is reasonable and effective.