On a highly effective wave absorber

Interaction between obliquely incident waves and an infinite array of multi-chamber perforated caissons

“…These are both valid in theory. In fact, the present solution for the normally incident waves is in consistent with that of Evans [14] and Twu and Lin [15]. Secondly, for single-chamber perforated caissons with partition walls, the values of R t , C F x and C F y calculated by the present solution are compared with that of Teng et al [23], and the agreement is obtained.…”

“…This is somewhat different from that of designing a multi-sheet porous plate wave absorber in a wave flume [14,15]. Twu and Lin [15] found that setting more porous plates in front of the end wall of the wave flume led to smaller reflection coefficient. But the geometrical porosities of the porous plates must be arranged in a gradually decreasing order along the wave propagation direction.…”

“…There is also a rich literature on the interactions of water waves with multi-chamber perforated wall structures [10,[14][15][16][17][18][19][20][21][22] (See Fig. 1b).…”

Impedance analysis of hydrodynamic behaviors for a perforated-wall caisson breakwater under regular wave orthogonal attack

“…Many authors have reported theoretical and experimental results of studies using one or more perforated or slotted front walls to reduce the wave reflection and the wave load on the structure. See for example Mei et al (1974), Kondo (1979), Tanimoto and Yoshimoto (1982), Chwang and Dong (1984), Twu and Lin (1991), Fugazza and Natale (1992), Bennett et al (1992), Kakuno and Liu (1993), Suh and Park (1995), Li (1995), Isaacson et al (1998), Williams et al (2000), Li et al (2002), Zhu and Chwang (2002), Tabet-Aoul and Lambert (2003), Balaji and Sundar (2003), Bélorgey et al (2003) and Huang (2006).…”

Total horizontal and vertical forces of irregular waves on partially perforated caisson breakwaters

“…These mainly involve the reflection of normally incident waves from single perforated wall structures (e.g., Tanimoto and Yoshimoto, 1982;Chwang and Dong, 1984;Sahoo et al, 2000;Zhu and Chwang, 2001;Takahashi et al, 2002), the normal wave reflection from structures with two or multiple perforated front walls (e.g., Kondo, 1979;Twu and Lin, 1991;Fugazza and Natale, 1992;Williams et al, 2000), the reflection of obliquely incident waves from single perforated wall breakwaters (e.g., Li et al, 2002;Teng et al, 2004) and the oblique wave reflection from perforated breakwaters with two or multiple perforated front walls (e.g., Losada et al, 1993b;Li et al, 2003). It should be noted that the aforementioned studies dealt with regular waves.…”