Topic
Wave flume
About: Wave flume is a research topic. Over the lifetime, 1627 publications have been published within this topic receiving 23335 citations.
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TL;DR: Yao et al. as mentioned in this paper reported a laboratory-based study on a debris-laden flow under tsunami waves, modelled as solitary waves in a 2D wave flume, with the waves being incident on a composite 3-slope setup.
Abstract: Yao, Y.; Huang, Z., and Lo, E.Y.M., 2018. Experimental Study on Floating Debris Generated by Solitary Waves Running up a Composite Beach. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 851–860. Coconut Creek (Florida), ISSN 0749-0208.Tsunami induced debris-laden flow is a destructive process, since the high speed and energetic tsunami waves could destroy and carry any items they could move. A key limitation in understanding such flows is the lack of quantitative experimental data. A laboratory-based study on a debris-laden flow under tsunami waves, modelled as solitary waves in a 2-D wave flume is reported here with the waves being incident on a composite 3-slope setup. Here, two rows of debris with different separation distances were tested. The debris reduced the maximum inundation with the reduction increased with the additional row of debris. The maximum inundation, maximum and final debris positions were shown to be more sensitive to the incident wave conditions. Ensemble measures and normalized kernel density functions were used to characterize the spread in the maximum and final debris positions. A newly defined dimensionless mass loading is further developed to characterize the inundation reduction. The obtained experimental results should find use in calibration or validation of numerical models and aid in field estimations of tsunami wave conditions via post-event surveys of the inundation and debris extent.
2 citations
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01 Jun 1978
TL;DR: In this paper, the wave reflection from a movable bed as it adjusted to the impinging waves was the primary source of wave height variability in 10 experiments in 6-and 10-foot-wide wave tanks.
Abstract: : Variation in wave reflection from a movable bed as it adjusted to the impinging waves was the primary source of wave height variability in 10 experiments in 6- and 10-foot-wide wave tanks. Re-reflection of waves from the wave generator, secondary waves, transverse waves, and cross waves also contributed to the wave height variability. Laboratory effects, caused by differences in initial profile slope, initial test length (distance between the wave generator and the initial shoreline), tank width, and water temperature, affected the profile development and the wave height variability. Initial profile slope and initial test length should be kept constant to assure test repeatability in movable-bed experiments. The wavelength-to-tank width ratio should be greater than or equal to 3 to assure two dimensionality of profile development, but two-dimensional profiles may not be realistic replications of three-dimensional profiles.
2 citations
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TL;DR: In this article, a 2D numerical wave flume based on the Reynolds Averaged Navier-Stokes equations and the standard turbulence model was developed to simulate the turbulent flows with the free surface, in which the volume of fluid (VOF) method was used to handle the large deformation of free surface and the relaxation approach of combined wave generation and absorbing was implemented.
Abstract: The 2-D numerical wave flume, based on the Reynolds Averaged Navier-Stokes equations and the standard turbulence model, was developed to simulate the turbulent flows with the free surface, in which the volume of fluid (VOF) method was used to handle the large deformation of the free surface and the relaxation approach of combined wave generation and absorbing was implemented, utilizing the commercial CFD software-FLUENT The relationship of the wave parameters, initial failure velocity and the deflection angle was investigated
2 citations
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TL;DR: In this paper, a perforated circular arc, rectangle box and anchor-chain system is proposed for a new type floating breakwater, which is based on the advantages of perforation circular arc structure and rectangle structure applications in the breakwater engineering.
Abstract: A new-type floating breakwater structure which consists of perforated circular arc,rectangle box and anchor-chain system is proposed based on the advantages of perforated circular arc structure and rectangle structure applications in the breakwater engineering.The relationship between hydrodynamic characteristic such as wave attenuation performance,movement and anchor-chain stress,etc.,and relative width(W/L),relative draft(s/d),and other factors of the floating breaker was tested and researched by means of a regular wave physical model in a 2D wave flume,and then compared with the traditional box-type floating breakwater.The result indicates that the new-type floating breakwater has the hydrodynamic characteristics of good effect of wave-damping,small range of motion as well as small stress of anchor chain in the range of test.
2 citations