“…Both harmonic and subharmonic sloshing modes have been considered, among others, by Miles (1984), Funakoshi & Inoue (1988), Feng (1997), Hill (2003), and Faltinsen, Timokha, and collaborators (in a series of papers, see Faltinsen, Rognebakke & Timokha 2006, Hermann & Timokha 2008, and references therein) using modal expansions and considering fully nonlinear gravity waves under general excitation (not necessarily horizontal); Frandsen (2004) and Wu & Chen (2009), instead, addressed this problem using finite differences.…”