Experimental and numerical studies on the development of a new wave absorber

• Published in: Ocean engineering Vol. 30; no. 2; pp. 185 - 203
• Main Authors: Kwon, S.H., Moon, W.M., Lee, H.S.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 01.02.2003; Elsevier
• Subjects: Applied sciences; Boundary element method; Buildings. Public works; Damping term; Earth, ocean, space; Exact sciences and technology; External geophysics; Free-surface boundary condition; Hydraulic constructions; Marine; Offshore structure (platforms, tanks, etc.); Physics of the oceans; Surface waves, tides and sea level. Seiches; Wave absorber; Damping term; Wave absorber; Boundary element method; Free-surface boundary condition; Wave absorption; Damping coefficient; Ocean dynamics; Boundary condition; Experimental study; Implementation; Mathematical formula; System description; Free surface flow; Numerical simulation; Net
• ISSN: 0029-8018; 1873-5258
• DOI: 10.1016/S0029-8018(02)00019-7

This paper proposes a new wave absorber made of flexible net structures. To test the efficiency of the proposed water absorber, experiments were done on wave absorbers of various lengths of and the thicknesses of the wave absorber. To perform a numerical modeling of the proposed wave absorber, damping terms were introduced in linearized free-surface boundary conditions. The length and the thickness of the wave absorber were modeled by the length and the coefficient of the damping zones. The boundary element method was adopted to solve the system. Series of experiments were performed to obtain the data for the coefficients of the damping term needed in numerical calculations. The predicted wave heights agreed very closely with those of experiments when the lengths of the incoming waves were within the order of the length of the wave absorber.