Uncertainty analysis in ship CFD and the primary application of ITTC procedures

The ITTC(International Towing Tank Conference) temporary procedure for the CFD(computational fluid dynamics) uncertainty analysis is reviewed in this paper.Aiming at the numerical results of the viscous flow around a benchmark submarine model(SUBOFF body),the CFD uncertainties are analyzed by using the ITTC procedure.With the primary practice of the procedure,we may realize that: the ITTC procedure is quite direct and reliable,need not any modification to the solver and is easy to practise.But the current procedure is only appropriate for the objects with simpler configuration but is very difficult to be used for the complicated configurations.More experiences are needed for better performing CFD uncertainty analysis.