An Integrated Experimental and Computational Investigation into the Dynamic Loads and Free-surface Wave-Field Perturbations Induced by Head-Sea Regular Waves on a 1/8.25 Scale-Model of the R/V ATHENA

摘要

A 1/8.25 scale-model of the U.S. Navy Research Vessel ATHENA was tested in regular head-sea waves to obtain data for validation of computational fluid dynamics (CFD) predictive tools. The experiments were performed in the David Taylor Model Basin at the Naval Surface Warfare Center (NSWC). With the model towed fixed in head-seas, horizontal and vertical loads on the model were obtained at two Froude numbers, F_r = 0.25 and F_r = 0.43. The model was run at two conditions of head-sea' wavelengths corresponding to A = 2L_o and λ = 1/2L_o with H/λ = 0.03, where L_o is the length of the model and H = 2a is the wave height. The wave field pertubations induced by the head-sea waves were quantified from free-surface images generated by a laser light sheet. Predictions of the horizontal and vertical loads on the model in regular head sea waves were made with the Numerical Flow Analysis (NFA) code. Numerial predictions of the wave-field perturbations were compared with the experimental data and the correlation coefficients have been computed.