Tidal bore process simulation device based on frequency control of multiple water pumps

Abstract

The invention relates to a tidal bore process simulation device based on frequency control of multiple water pumps. The tidal bore process simulation device based on frequency control of multiple water pumps aims at achieving the purpose that the high energy-storage tidal bore head can be generated, the advancing speed and height of the tidal bore in the transmission process, and thus the tide flooding and ebbing process of the whole tidal can be simulated. According to the technical scheme, the tidal bore process simulation device based on frequency control of the multiple water pumps comprises an upstream water supply pool, an upstream water storage pool, a downstream water supply pool, a downstream water storage pool located under the downstream water supply pool and an experiment water tank, wherein the two ends of the experiment water tank communicate with the upstream water supply pool and the downstream water supply pool correspondingly; and the tidal bore process simulation device further comprises an arc-shaped valve arranged on the upper portion of the upstream water storage pool, multiple water pumps arranged in the upstream water storage pool and the downstream water storage pool, at least two layers of energy dissipation plates arranged between a water flowing passageway arranged between the upstream water supply pool and the upstream water storage pool and at least two layers of energy dissipation plates arranged in a water flowing passageway arranged between the downstream water supply pool and the downstream water storage pool.

Description

technical field [0001] The invention belongs to the field of physical model experiments of estuaries and coasts, and in particular relates to a tidal surge process simulation device based on frequency conversion and speed regulation of multiple water pumps. Background technique [0002] Tidal surge is the peak of the tide front when the water level rises suddenly, which is the result of nonlinear distortion of tidal wave under certain conditions. It is the main dynamic factor of some strong tidal estuaries, and has a decisive impact on the evolution of the riverbed, the upward flow of salt water, the diffusion of pollutants, and even the entire estuary environment. In the research of estuary and coastal science, physical model experiment is one of the important means to study tidal surge phenomenon. Since the change of tide is closely related to the fluctuation process of the whole tide, in the physical model test, it is necessary to involve a simulation method capable of g...

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Problems solved by technology

[0003] At present, the literature sees the use of high-level water tanks to store water, and the water flow gushes out from the bottom of the gate to form tidal surges by lifting the gate, or controls the axial flow pump to instantly discharge water to form tidal surges in the tank. The former is difficult to sustain due to the drop in the water level in the tank. The latter is difficult to control the repeatability of the tidal surge test due to the large design flow rate of the axial flow pump and the difficulty in accurately controlling the water flow rate.

In addition, either because of the inability to provide subsequent water volume support, or because the tide reflection problem cannot be solved when the tide reaches the wall at the other end of the tank, neither of the above two methods can simulate the subsequent high tide and ebb tide process after the tide surge

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