Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wave transmission at submerged coastal structures and artificial reefs
https://orcid.org/0000-0002-6586-2010
Abstract Wave transmission at low-crested coastal structures has been studied, based on physical model tests with trapezoidal impermeable, permeable and perforated structures. The differences between wave transmission at impermeable and permeable structures are relatively limited. For a perforated hollow structure with an impermeable vertical screen in the middle, the wave transmission is significantly less than for perforated structures without an impermeable vertical screen; the blocking of the orbital motion by the screen significantly reduces wave transmission. The effectiveness of an impermeable vertical screen to block the orbital motion and consequently reduce wave transmission assists designers of artificial reefs to design structures that reduce wave transmission. Empirical expressions based on a hyperbolic tangent function have been derived to describe the test results. For permeable structures also available data for emerged structures has been used in the analysis, and the newly introduced expression appears to be accurate for both submerged and emerged permeable structures.
Highlights Based on new physical model tests wave transmission at impermeable, permeable and perforated structures, has been studied. Blocking the orbital motion, for instance by a vertical screen, significantly reduces wave transmission. For structures that dissipate a lot of wave energy, the wave period at the rear side becomes shorter compared to the front. For structures with limited wave dissipation, the wave period at the rear side can become longer compared to the front. An accurate method to estimate wave transmission has been developed and validated using new and existing data. The results provide guidance for the hydrodynamic design of artificial reefs to enhance marine life.
Wave transmission at submerged coastal structures and artificial reefs
https://orcid.org/0000-0002-6586-2010
Abstract Wave transmission at low-crested coastal structures has been studied, based on physical model tests with trapezoidal impermeable, permeable and perforated structures. The differences between wave transmission at impermeable and permeable structures are relatively limited. For a perforated hollow structure with an impermeable vertical screen in the middle, the wave transmission is significantly less than for perforated structures without an impermeable vertical screen; the blocking of the orbital motion by the screen significantly reduces wave transmission. The effectiveness of an impermeable vertical screen to block the orbital motion and consequently reduce wave transmission assists designers of artificial reefs to design structures that reduce wave transmission. Empirical expressions based on a hyperbolic tangent function have been derived to describe the test results. For permeable structures also available data for emerged structures has been used in the analysis, and the newly introduced expression appears to be accurate for both submerged and emerged permeable structures.
Highlights Based on new physical model tests wave transmission at impermeable, permeable and perforated structures, has been studied. Blocking the orbital motion, for instance by a vertical screen, significantly reduces wave transmission. For structures that dissipate a lot of wave energy, the wave period at the rear side becomes shorter compared to the front. For structures with limited wave dissipation, the wave period at the rear side can become longer compared to the front. An accurate method to estimate wave transmission has been developed and validated using new and existing data. The results provide guidance for the hydrodynamic design of artificial reefs to enhance marine life.
Wave transmission at submerged coastal structures and artificial reefs
https://orcid.org/0000-0002-6586-2010
Abstract Wave transmission at low-crested coastal structures has been studied, based on physical model tests with trapezoidal impermeable, permeable and perforated structures. The differences between wave transmission at impermeable and permeable structures are relatively limited. For a perforated hollow structure with an impermeable vertical screen in the middle, the wave transmission is significantly less than for perforated structures without an impermeable vertical screen; the blocking of the orbital motion by the screen significantly reduces wave transmission. The effectiveness of an impermeable vertical screen to block the orbital motion and consequently reduce wave transmission assists designers of artificial reefs to design structures that reduce wave transmission. Empirical expressions based on a hyperbolic tangent function have been derived to describe the test results. For permeable structures also available data for emerged structures has been used in the analysis, and the newly introduced expression appears to be accurate for both submerged and emerged permeable structures.
Highlights Based on new physical model tests wave transmission at impermeable, permeable and perforated structures, has been studied. Blocking the orbital motion, for instance by a vertical screen, significantly reduces wave transmission. For structures that dissipate a lot of wave energy, the wave period at the rear side becomes shorter compared to the front. For structures with limited wave dissipation, the wave period at the rear side can become longer compared to the front. An accurate method to estimate wave transmission has been developed and validated using new and existing data. The results provide guidance for the hydrodynamic design of artificial reefs to enhance marine life.
Wave transmission at submerged coastal structures and artificial reefs
van Gent, Marcel R.A. (Autor:in) / Buis, Lisanne (Autor:in) / van den Bos, Jeroen P. (Autor:in) / Wüthrich, Davide (Autor:in)
Coastal Engineering ; 184
26.05.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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