A three-dimensional coupled-mode model for the acoustic field in a two-dimensional waveguide with perfectly reflecting boundaries

Luo Wen-Yu^{1, †,}, Yu Xiao-Lin^{1, 2}, Yang Xue-Feng^{2, 3}, Zhang Ze-Zhong^{1, 2}, Zhang Ren-He¹

TL in a vertical plane for the 3° wedge problem with a rigid bottom. (a) y = 0 km, by the analytical image solution; (b) y = 0 km, by DGMCM3D; (c) y = 10 km, by the analytical image solution; (d) y = 10 km, by DGMCM3D.