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Full-scale experimental measurements and numerical predictions of thewave-elevation topology behind a transom-sterned vessel, the R/V Athena I, arecompared and assessed in this paper. The mean height, surface roughness (RMS),and spectra of the breaking stern-waves were measured in-situ by a LIDAR sensorover a range of ship speeds covering both wet- and dry-transom operatingconditions. Numerical predictions for this data set from two Office of NavalResearch (ONR) supported naval-design codes, NFA and CFDship-Iowa-V.4, havebeen performed. Initial comparisons of the LIDAR data to the numericalpredictions at 5.4 m/s (10.5 kts), a wet-transom condition, are presented. Thiswork represents an ongoing effort on behalf of the ONR Ship Wave Breaking andBubble Wake program, to assess, validate, and improve the capability ofComputational Fluid Dynamics (CFD) to predict full-scale ship-generated wavefields.

A Comparison of Full-Scale Experimental Measurements and Computational Predictions of the Transom-Stern Wave of the R/V Athena I