Dynamic storm surge and wave coupling simulation method in two-dimensional water tank and device thereof

Abstract

The invention relates to a dynamic storm surge and wave coupling simulation method in a two-dimensional water tank and a device thereof. Relevant data of a project area or a mathematical model is collected to calculate to obtain a storm surge level and wave duration curve for simulating the project area; the simulated storm surge continuous water level change process is inputted into a computer, and water level reading at a second water level measuring instrument is obtained in real time and compared with a given target value; the water level change coincidence degree and synchronization at the first and second water level measuring instruments are monitored; the simulation result and the inputted change process are compared and analyzed to obtain deviation, and simulation accuracy is determined; the storm surge and the wave process are discretized; the real-time acquisition result of a wave height meter is compared with a target value; uninterrupted wave making is carried out to realize synchronous change of the surge level and the wave, and storm surge and wave coupling simulation in a laboratory is realized; real-time correction is carried out. The method is advantaged in that the simulation process is more consistent with the actual condition, the test result tends to be safe, and the test result tends o be reasonable.

Description

technical field [0001] The invention is a laboratory hydrodynamic simulation technology, which belongs to the field of fluid dynamics test. The invention relates to a dynamic coupling simulation method of storm surge and wave in a two-dimensional water tank. The invention also relates to the equipment used in the dynamic coupling simulation method of storm surge and wave in the two-dimensional water tank. Background technique [0002] At present, the traditional simulation method for the combination of waves and water levels in the laboratory is to superimpose waves with a fixed water level. Generally, four water levels, namely extreme high water level, design high water level, design low water level, and extreme low water level, are used for simulation, which is consistent with the actual continuous water level change process. The difference is large, and the real hydrodynamic conditions and wave conditions cannot be accurately simulated. [0003] The main problems of the...

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Problems solved by technology

[0002] At present, the traditional simulation method for the combination of waves and water levels in the laboratory is to superimpose waves with a fixed water level. Generally, four water levels, namely extreme high water level, design high water level, design low water level, and extreme low water level, are used for simulation, which is consistent with the actual continuous water level change process. The difference is large, and the real hydrodynamic conditions and wave conditions cannot be accurately simulated

[0003] The main problems of the fixed water level superimposed wave simulation method are: 1. The water level generally selects four water levels: extreme high water level, design high water level, design low water level, and extreme low water level, which often cannot include the most unfavorable water level for the actual project, and there are potential safety hazards ; 2. Experienced scientific researchers often use part of the encrypted water level to supplement part of the fixed water level for testing, but it is also impossible to guarantee that the water level that is most unfavorable to the actual project will be included, and it is time-consuming and laborious; The storm surge process is often short, and the fixed water level test method is conservative when used for high water levels, which increases the project cost

4. The water level simulation process does not match the reality, and it is difficult to reflect the real damage process of the seawall under the action of storm surge

[0005] Existing problems: The storm surge water level process line used in the test is stepped rather than continuous, and the water level changes every 1.5 or 3 hours, with a change of 0.1m each time, which is different from the actual process of storm surges and waves on seawalls. Significantly different

[0006] In the existing test methods, whether the traditional fixed water level or the stepped water level is used, it is different from the continuous water level change process of the actual storm surge, and cannot accurately simulate the action process of storm surge and waves on coastal buildings. There are limitations in the rationality and applicability of the test results

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