VALIDATION OF AN INTERACTIVE APPROACH FOR CALCULATING SHIP BOUNDARY-LAYERS AND WAKES FOR NONZERO FROUDE-NUMBER

An interactive approach for calculating ship boundary layers and wakes for nonzero Froude number is validated through detailed comparisons w ith recent extensive experimental data for the practical 3-D geometry of the Series 60 C(B) = 0.6 ship model at both low (0.16) and high (0. 316) Froude number. The former case essentially simulates the zero Fro ude number condition such that the comparisons with the latter case en ables the identification of the salient features of the wave-induced e ffects. Close agreement is demonstrated between the calculations and t he data, which supports the conclusion that the present approach can a ccurately predict ship boundary layers and wakes, including free-surfa ce effects; however, the present detailed comparisons enables a more c ritical evaluation. Additionally, comparisons are made with inviscid-f low results, which in combination enable an evaluation of the wave/bou ndary-layer and wake interaction. Lastly, some concluding remarks are made concerning the limitations of the present approach, prognosis and requirements for improvements, relative merits of interactive vs larg e-domain approaches, and implications with regard to ship design.