Solitary wave is a permanent when the dissipation ignored. Many analytical solutions have been developed for finite amplitude solitary waves. In additional to perturbation solutions, closed form are also available (e.g., McCowan 1891, Clamond and Fructus 2003, being denoted as CF from hereon), which more accuracy, especially larger waves were discussed in Wang Liu (2022). (2022) ’s laboratory e...

Currently, eight million metric tons of plastic end up in the oceans every year, and microplastics different forms are present almost all water systems world: streams, rivers, lakes, or oceans, even our blood. Detection marine litter is an urgent task. Some works have recently reported potential GNSS-Reflectometry to detect from space. This study presents results a controlled field experiment c...

The migration rate of wave-formed ripple marks was investigated using a twodimensional wave flume. Well sorted fine-grained sand (0.2 mm in diameter) was placed on a 1/20-fixed slope and an adjacent part of the horizontal flume bottom. The onshore migration rates of ripples and near-bottom orbital velocities were measured at three sites along the slope with different water depths and at one sit...

An experimental study of the performance and optimisation of a prototype novel drag-driven vertical axis tidal stream turbine is presented. The drag turbine has several unique advantages, including simple blade design, deployable in shallow waters and potential denser array spacing. Performance optimisation was conducted in the hydraulics flume at Cardiff University (CU), where the turbine reac...

The adsorption of two commonly used pesticides, diuron and tebuconazole, on an organic substrate (hemp), which was chosen as an analogue for natural substrates often found in agricultural ditches, has been studied using three different contact schemes: 1) contact in a beaker using a modified batch method; 2) contact in an experimental flume, with a dry start substrate; and 3) same as 2) but wit...

[1] In this work we combine existing ideas on gravel and sand entrainment into a simulation model for flows that flush sand from the surface and subsurface of a gravel riverbed. A flume experiment is conducted to provide a test of the flushing model. The primary advance represented in this paper is incorporation of a two-fraction entrainment approach into a routing model to account for the effe...