RU220024U1 - Universal tsunami-type wave generator of various shapes - Google Patents

Abstract

The utility model relates to the field of hydraulic engineering construction and can be used when testing models of designed hydraulic structures for the impact of tsunami waves of various shapes. A universal tsunami-type wave generator of various shapes contains a hydraulic tray for conducting experiments, a vacuum pump, a tank, a valve for supplying air to the tank, wave recorders, an inclined surface simulating a coastal slope, a metal rod that regulates the slope of this surface, and an adjustable inclined surface for modeling landslide tsunami and a winch. The inclined surface imitating the bank slope is attached at one end to the bottom of the hydraulic flume for conducting experiments, and its plane rests on a metal rod that regulates the slope of the surface imitating the bank slope. The adjustable inclined surface is configured to launch the block for modeling landslide tsunamis and is attached at one end to the upper plane of the tank, and the lower end is hooked to the winch cable, the length of which allows changing the angle of inclination of the adjustable inclined surface. The technical result is to create a universal tsunami-type wave generator of various shapes. The universal generator is capable of reproducing both waves of seismic origin and waves caused by landslides and other objects falling into the water. 4 ill.

Description

The utility model relates to the field of hydraulic engineering construction and can be used when testing models of designed hydraulic structures for the impact of tsunami waves of various shapes.

Tsunamis are huge waves of various shapes, and therefore, when designing hydraulic structures, it is necessary to evaluate their possible negative impact. For these purposes, various systems for modeling such waves are being developed and used.

Known in the prior art is a tsunami sea wave simulation system CN 11308956 A Offshore tsunami wave simulation system. The tsunami sea wave simulation system comprises a tsunami sea wave generation pool, a solitary wave generation device, a first drainage system, and a second drainage system. A water intake is formed at the bottom of the sea basin. The device for generating single waves is located in the sea basin and is located on one side, near the first end, of the water intake. The disadvantage of this analogue is the simulation of only one type of tsunami waves - single waves (solitons).

Also known is a pneumatic tsunami generator developed at HR Wallingford University and described in a scientific article: Rossetto T., Allsop W., Charvet I., Robinson D. "Physical modeling of tsunami using a new pneumatic wave generation)), magazine Coastal Engineering, No. 58, 2011, pp. 517-527. Pneumatic generator from a non-separable design of a channel, a metal tank and a pneumatic pump. The installation simulates tsunami waves, thanks to the operation of a pneumatic pump. The disadvantage of this analogue is the simulation of only tsunami waves caused by seismic activity, as well as a heavy non-separable structure.

The prototype of the claimed utility model is an experimental setup for modeling tsunami waves at NRU MGSU, described in a scientific article: Gusarov R.N., Kantarzhi I.G., Volgin G.V. “Theoretical and practical studies of long waves at NRU MGSU”, journal “Hydrotechnical construction)”, No. 1, 2023, pp. 47-52.

The main disadvantage of the prototype is that it only implements a method for modeling tsunami waves of seismic origin. The claimed universal generator is capable of reproducing waves of both seismic origin and waves caused by landslides and other objects falling into the water.

The technical result to be achieved by the proposed technical solution is the creation of a universal generator of tsunami-type waves of various shapes, which has the ability in laboratory conditions to reproduce wave effects from tsunami-type waves of various shapes, as well as to study the behavior of these waves.

The technical result is achieved by the proposed design of a universal tsunami-type wave generator of various shapes, containing a hydraulic tray for conducting experiments, a vacuum pump, a tank, a valve for supplying air to the tank, wave recorders, an inclined surface simulating a coastal slope, a metal rod that regulates the slope this surface, and an adjustable inclined surface for simulating landslide tsunamis and a winch, while the inclined surface imitating the coastal slope is attached at one end to the bottom of the hydraulic flume for experiments, and the plane rests on a metal rod that regulates the slope of the surface imitating the coastal slope, and the adjustable inclined surface is configured to launch the block for modeling landslide tsunamis and is attached at one end to the upper plane of the tank, and the lower end is hooked to the winch cable, the length of which allows changing the angle of inclination of the adjustable inclined surface.

The proposed solution is explained

fig. 1 is a diagram of a universal tsunami-type wave generator of various shapes;

fig. 2 - the main stages of the experiment (modeling of waves of seismic origin);

fig. 3 - the main stages of the experiment (simulation of waves from landslides);

fig. 4 is a working drawing of a universal tsunami-type wave generator of various shapes, showing the following items:

1 - hydraulic tray for experiments;

2 - vacuum pump;

3 - reservoir;

4 - valve for supplying air to the tank;

5 - adjustable inclined surface for modeling landslide tsunamis;

6 - a block simulating the process of a landslide;

7 - winch

8 - wave recorders;

9 - an inclined surface simulating a coastal slope;

10 - a metal rod that regulates the slope of the coastal surface.

The wave generator is the following design: on one side of the hydraulic tray for experiments (1) there is a universal prefabricated wave generator - a tank (3) connected to a vacuum pump (2), to which an adjustable inclined surface is also attached for modeling landslide tsunamis (5) . This adjustable inclined surface is configured to launch a block for modeling landslide tsunamis (6). An inclined surface is installed on the other side of the tray, imitating the coastal slope (9), based on a metal rod that regulates the slope of the coastal surface (10).

Part of the generator is capable of reproducing tsunami-type waves caused by landslides or other objects falling into the water (solitons), by placing in the tray an adjustable inclined surface for simulating landslide tsunamis (5), capable of changing the angle of inclination, thanks to a winch (7) attached to the guides of the hydraulic tray for experiments (1), the angle of inclination of the surface for modeling landslide tsunamis (5) can be adjusted from 0 to 90°, under which a solid body will fall - a block that simulates the process of landslide descent (6) into the water. Another part of the installation is capable of reproducing tsunami-type waves from seismic activity (N-waves), thanks to the tank (3), the vacuum pump connected to it (2) and the air valve for supplying air to the tank (4). When reproducing the N-wave, the adjustable inclined surface for simulating landslide tsunamis (5) is lifted with a winch (7) and does not interfere with the process of reproducing the wave, and when simulating a landslide tsunami, on the contrary, the vacuum pump (2) is turned off and the adjustable inclined surface for modeling is lowered landslide tsunamis (5). To record the characteristics of the waves, as well as the shape of the wave, two wave recorder sensors (8) are installed in the hydraulic tray for experiments (1). Wave recorders (8) can be moved and installed in any section of the tray.

The design works as follows, when simulating seismic tsunamis, at the beginning of the experiment, the vacuum pump (2) is turned on and starts pumping air out of the tank (3), as a result, the water in it starts to rise, and the water level in the hydraulic flume for experiments (1) starts go down. As in real tsunami conditions, the water level drops below the calm level, when the water level in the coastal zone decreases before the shock wave. As soon as the water in the tank (3) reaches the upper marks, the valve for air supply to the tank (4) opens and the accumulated volume of water is released. As soon as the valve for supplying air to the tank (4) opens, a wave forms at the outlet of the tank (3).

When modeling landslide tsunamis, the design works as follows.

At the beginning of the experiment, an adjustable inclined surface is fixed to simulate landslide tsunamis (5) at a certain angle of inclination, after which a block is launched that simulates the landslide process (6), which slides into the water. When a block imitating the process of a landslide (6) comes into contact with water, a wave is formed.

Thanks to the developed universal generator, it became possible to qualitatively simulate tsunami-type waves, which will make it possible to study in more detail the behavior of these waves in the coastal zone, as well as to reproduce tsunami waves of various shapes. Conducting experiments will allow testing the designed hydraulic structures for the load from tsunami waves. Thus, the claimed technical result is achieved.

Claims (1)

A universal tsunami-type wave generator of various shapes, containing a hydraulic tray for conducting experiments, a vacuum pump, a tank, a valve for supplying air to the tank, wave recorders, characterized in that it additionally contains an inclined surface that simulates a coastal slope, a metal rod that regulates the inclination of this surface, an adjustable inclined surface for simulating landslide tsunamis and a winch, while the inclined surface imitating the coastal slope is attached at one end to the bottom of the hydraulic flume for experiments, and the plane rests on a metal rod that regulates the slope of the surface imitating the coastal slope, adjustable inclined surface configured to launch a block for modeling landslide tsunamis and is attached at one end to the upper plane of the tank, and the lower end is hooked to the winch cable, the length of which allows you to change the angle of inclination of the adjustable inclined surface.