Comparison of 2D and 3D Predictions of the FOR3D Acoustic Propagation Model in Shallow Water Flat Bathymetry Environments

摘要

In this study using the FOR3D Acoustic Model, little difference was found between the 2D and the 3D computational modes. The study was limited to shallow water flat bathymetry (along the slope) using sound velocity gradients normally associated with typical shelf/slope frontal environments as well as greatly inflated gradients. Several comparisons were made for specific cases (in 2D and 3D modes) having exact solutions, which by analogy provide clear demonstration of why substantial agreement was found for the two different modes.