Wave Height Attenuation over a Nature-Based Breakwater of Floating Emergent Vegetation

The nature-based breakwater of floating emergent vegetation (BFEV) provides protection for water banks and various engineering structures from wave erosion. Compared with the convenient hard breakwater, BFEV is beneficial to resilient sustainable development rivers, lakes, coasts, marine areas because it free new pollution. As a unrevealed effect efficiency on attenuation are be investigated through set 312 physical tests in rectangular indoor flume present study. Results show that height attenuates by 38–62%. Based statistical methods, main influencing factors transmitted coefficient (Ct) found closely dependent three conventional newly proposed dimensionless parameters (λ1, λ2, λ3, λ4). Three include orbital velocity, period, BFEV-width stem spacing-based parameter λ2), ratio spacing (λ3). (λ4) gravity acceleration, which significantly positively related attenuation. A multiple linear regression formula Ct based these four obtained high correlation 0.958. This study expected supplement data this provide fundamental theory design construction BFEV.