A three-dimensional coupling measurement and control device and method

Abstract

The invention discloses a three-dimensional coupling measurement and control device and method. The device includes: a wave maker, water inlets and outlets at both ends, an experimental area, a water storage tank, a water level measuring instrument, a wave height meter, an industrial computer, a frequency converter, and a bidirectional pump motor; The industrial control computer generates a water level adjustment command based on the water level change detected by the water level measuring instrument and sends it to the frequency converter, so that the frequency converter can control the speed and steering of the two-way pump motor according to the water level adjustment command, and then pump and discharge the water in the test area through the water inlet and outlet at both ends. to the reservoir to make the water level in the test area reach the set water level; also perform automatic iterative correction and splicing of multiple discrete wave-making files according to the simulation results detected by the wave height meter, and send the processed wave-making files to the Wave maker, so that the wave maker can make waves according to the processed wave files, so that the water level in the test area can reach the set wave height and set period. The invention can realize the three-dimensional coupling experiment of simulated waves, tides and storm surges in the laboratory.

Description

technical field [0001] The invention relates to the technical field of coastal engineering physical model experiments, in particular to a three-dimensional coupling measurement and control device and method. Background technique [0002] At present, there are domestic simulation methods for storm surge and wave dynamic coupling in two-dimensional tanks (Chen Maowen, Pan Junning, Wang Dengting, et al. Research on wave and tide coupling simulation technology [J]. Water Transport Engineering, 2019, 551(01): 38- 43.), in the experiment, the continuous storm surge water level change process was superimposed on the encrypted and discrete wave process, and the water level was realized in the laboratory two-dimensional tank by using the flume wave generator and the tailgate tide generating equipment to continuously generate tide waves. The synchronous change with the wave realizes the dynamic coupling simulation of the wave and the tide. The above simulation methods cannot truly re...

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Problems solved by technology

[0006] 1. Due to oblique incidence of waves, shallow water deformation, refraction and diffraction, some areas or parts (such as embankment head sections, corner sections, and sections with large terrain changes) will present complex three-dimensional hydrodynamic characteristics, two-dimensional Only the positive effect of waves can be considered in the tank, and it cannot reflect the three-dimensional hydrodynamic characteristics of waves brought about by oblique incidence, which is different from the actual situation and poses a safety hazard

[0007] 2. The randomness of breaking and deformation of waves on complex terrain is very large, and the stability of breakwaters under reef terrain is significantly reduced. The two-dimensional tank cannot reflect the terrain changes near the actual engineering area, so it cannot better reflect the relationship between waves and Three-dimensional terrain, especially the propagation deformation under complex terrain conditions

[0008] 3. The two-dimensional flume cannot fully reflect the propagation of waves on the rear three-dimensional land area after the seawall breaks, cannot reflect the real process of flood influx, propagation and retreat, and cannot fully simulate the entire process of disaster damage

[0010] 1. The selection of water levels is limited, and it cannot be guaranteed to include the most unfavorable water levels for the actual project, and there are potential safety hazards in the project

[0011] 2. In the actual storm surge process, the action time of high water level is often short, and the traditional test method is too conservative when used for high water level, which increases the cost of the project and causes unnecessary waste of resources

[0012] 3. The simulated water level change process does not match the reality, and cannot reflect the real function and damage process of storm surges and seawalls and other coastal structures

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