4 results about "Artificial wave" patented technology

This invention relates to a seismic performance optimization and evaluation system for long-span bridges based on digital twins, belonging to the fields of computer science and bridge engineering. The optimization and evaluation system includes a data acquisition and preprocessing module, a model update module, and a performance evaluation and optimization module. The optimization and evaluation method includes identifying the structural modes and frequencies to obtain the bridge's mode shapes and natural frequencies, and establishing a digital twin model of the target bridge. Based on a multi-objective optimization design function, supercomputing-driven optimization of vibration reduction device parameters is performed, outputting the optimal parameter combination to control the bridge's graded response under earthquakes. The artificial wave generated based on the bridge's design response spectrum can fully consider the dynamic characteristics of long-span cable-stayed bridges and the seismic motion characteristics of the design site. Simultaneously, the seismic optimization design process only involves the time history analysis of a single ground motion, significantly reducing the computational load of the optimization design and better considering the comprehensive influence of various nonlinear factors on the bridge's seismic response, thus significantly simplifying the complexity of seismic optimization for long-span bridges.

This invention provides an experimental apparatus and method for simulating artificial surge scouring of bottom sediment. By setting up an upstream water tank and a rapidly opening and closing valve, the instantaneous release of water stored in the upstream tank through the valve's opening allows for precise simulation of the instantaneous surge process caused by gate scheduling or flooding in actual river channels. By setting an adjustable tailgate to control the downstream water level, combined with an adjustable upstream water tank level, independent or coupled adjustment of key hydraulic parameters such as surge intensity (water level difference) and downstream water depth is achieved, providing a hardware foundation for systematically studying the bottom sediment response mechanism under different working conditions. Simultaneously, an integrated flow velocity measurement system and image acquisition system enable real-time synchronous acquisition of the dynamic evolution of the transient flow field structure and bed micro-topography under surge action, achieving synchronous high-precision monitoring of the dynamic evolution of the transient flow field structure and bed micro-topography.

This application discloses a wave generator, relating to the field of artificial wave generation technology. The wave generator includes a wave chamber, a piston chamber, a piston component, a baffle, and a drive assembly. The piston chamber is connected to the wave chamber through multiple slots spaced apart from top to bottom. The top of the piston chamber has an opening for the piston component to extend into. A wave plate is disposed inside the wave chamber. The drive assembly is connected to the piston component and the baffle to drive the piston component and the baffle to reciprocate together. This design has a simple and compact structure and a simple drive system. Only one drive assembly is needed to reciprocate to drive the piston component to move, thereby continuously spraying water flow, so that the waves have good continuity.

The present invention relates to a wave pool for surfing comprising a wave generation system formed by individual modules, the movement variables of which are controlled sequentially as a whole and individually via a centralised control system to push a mass of water forward and backward using partially submerged gates. Depending on the geometry of the pool, these two movements can be used to provide two waves with identical characteristics on each side of the pool. Alternatively, a single side can be used in conjunction with the modules located at a 45° angle to maximise the energy of each movement, provide an increasingly longer wave, and have pools with considerable lengths. Once movement is generated, the pushed mass of water travels a ride length before reaching the reef that is arranged at a diagonal angle to the trajectory of said water, and, upon encountering same, the wave breaks. This break gives rise to a wave that can differ depending on its initial characteristics, which exist throughout the bathymetry, which exhibits specific fixed characteristics. The shape of the pool is contained by a structure that is defined to achieve harmony in terms of frequency and quality of the generated waves and that sends the water resulting from the generation of waves to a mitigation channel located at each end of the pool. The mass of water resulting from these movements is collected in this channel and prevents water reflection and turbulence, in turn allowing the water to return naturally by gravity to maintain the level of water in the pool. A tank outside the pool can be used to raise or lower the water level, simulating the effect of a tide in a controlled environment based on the type of waves required, allowing different configurations of both individual and group waves for different surfer skill levels such as beginner, intermediate and advanced.