A first mode internal wave generator

Abstract

The invention discloses a first modality internal wave generator. The first modality internal wave generator comprises a bottom plate, a slapping plate and a driving device, wherein a vertical support is fixed on the bottom plate, the middle of the side face of the slapping plate is hinged to the vertical support, a first track is fixed on the vertical support, and a firs sliding block is arranged on the first track; a second track is fixed on the bottom plate, wherein the second track is provided with a second sliding block; the slapping plate is provided with a first connecting plate and a second connecting plate, wherein one end of the first connecting plate is connected with the slapping plate in a sliding mode, and the other end of the first connecting plate is hinged to the first sliding block; one end of the second connecting plate is connected with the slapping plate in a sliding mode, and the other end of the second connecting plate is hinged to the second sliding block; the driving device is connected with the first sliding block or the second sliding block. By means of the movement of the slapping plate, the first connecting plate and the second connecting plate, thrust is generated on a water body only in the horizontal direction, vortex force is prevented from occurring to the water body, and the water body is pushed to generate first modality internal waves.

Description

technical field [0001] The invention relates to the technical field of internal wave experiments, in particular to a first-mode internal wave generator. Background technique [0002] Ocean internal wave is an important mesoscale phenomenon in the ocean. It is an intermediate link connecting large-scale to small-scale energy transmission, and plays an important role in the entire physical ocean research. Due to the lack of observational data, the internal wave experiment in the laboratory has become an important way to study internal waves. It can isolate various factors and conduct research on the generation, propagation and attenuation mechanisms of internal waves. [0003] There are many ways to generate internal waves in the experiment. Common methods include using gravity collapse, dragging terrain to generate internal waves, and using wave generators to generate waves. Among them, using wave generators to generate waves is the most convenient way to generate internal wa...

AI Technical Summary

Problems solved by technology

However, in the process of internal wave generation, the entire clapper is located below the water surface, so that in addition to the expected first-mode internal waves near the cline, when the clapper moves in a circular arc, due to the compensation of water, there will be The disturbance of water produces vortex motion on the water body, so the final internal wave is different from the internal wave of the first mode actually required

Therefore, when carrying out fine-grained measurement of the first-mode internal wave experiment, such as PIV technology to measure the internal wave flow field, or schlieren technology to measure the internal wave density field changes, etc., there will be strong background interference, and at the same time, the experiment The results also have a direct impact on

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