Water tank wave flow generation system with rear-mounted flow outlet

Abstract

The invention relates to the technical field of hydraulic model tests, and provides a water tank wave flow generation system with a rear-mounted flow outlet. The rear-mounted flow outlet and a rectifying device located below a water tank are arranged, the rectifying device comprises a rectifying chamber and a built-in rectifying grid, one end of the rectifying chamber is communicated with a water collecting tank, and the other end of the rectifying chamber is communicated with the bottom wall of a water tank unit; a flow outlet in the bottom wall is located at the front end of a wave pushing direction of a wave maker, water flow subjected to preliminary energy dissipation in the water collecting tank is rectified into smooth fluid through the rectifying grid and then is input into the water tank for steady flow, and the water flow pushed by a wave pushing plate arranged on the wave maker is steady flow meeting the test requirement; the water inlet amount of the water inlet and the wave pushing speed of the wave pushing plate are intelligently controlled through a computer, the requirements of flow generation and wave generation tests are met, the technical problem that water flow needs to be stabilized through a long transition section due to the fact that the water flow is in a vortex shape when a water inlet pipeline is installed in front of the wave pushing plate is thoroughly solved, and the infinite length use principle of linear water tank flow generation is met.

Description

technical field [0001] The invention relates to the technical field of hydraulic model tests, in particular to a wave flow generating system of a rear-mounted water tank at an outlet. Background technique [0002] The simulation of waves and currents is an important means of hydraulic and port engineering tests. In marine and near-shore engineering, tests such as fishing port fish reefs, seawall sections, and sediment start-up transport must be powered by waves and currents. Therefore, the wave-making system and the current-making system are required to be used in the flume model tests of the above-mentioned projects, and in most cases, the combined action of waves and currents is required. [0003] In the wave flow tank, the method of installing a wave machine and a flow pump at the end of the tank is often used to simulate the working condition of the test structure under the action of the wave flow. The traditional wave flow generation system of the water tank, in order t...

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Problems solved by technology

[0003] In the wave flow tank, the method of installing a wave machine and a flow pump at the end of the tank is often used to simulate the working condition of the test structure under the action of the wave flow. The traditional wave flow generation system of the water tank, in order to avoid the resistance of the push wave plate to the water flow Usually, the water inlet pipe is directly installed at the front end of the push wave direction of the push wave plate, that is, the outlet is in front, but there are the following defects: since the water inlet pipe is directly installed in front of the push wave plate, the output water flow is vortex After entering the square tank in a spiral shape, it needs to go through a long transition section to stabilize the flow, that is, the tank itself needs to be long enough to meet the test requirements; because the water flow output from the outlet is in a vortex shape, the water flow will destroy the wave when it needs the combined action of waves and currents The shape, that is, the simultaneous generation of waves and currents cannot be realized; the tail end of the tank is about 4-6m long and cannot be used for the transition section of the water flow, which violates the infinitely long use principle of straight-line tank flow

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