Computation of the Viscous Free-Surface Flow around the Ship Model Free to Trim and Sink

摘要

The following paper describes an attempt on the RANSE computations of the viscous, free-surface flow around the free model in calm water, with the dynamic trim and sinkage taken into account. The COMET flow solver was used with some additional user coding which enabled evaluating the running attitude of the hull.rnComputations including evaluation of the running attitude of the hull require higher computational effort than the computations for fixed model and thus, for low and moderate Froude numbers it is reasonable to neglect the dynamic trim and sinkage, especially in cases of comparing different versions of the same shape. For high Froude numbers, in order to estimate the resistance and the wave pattern properly, the running attitude of the hull should be taken into account. The presented computations were performed for the Froude number value range 0.3 - 0.6.