A wave-crossing multi-purpose wave-breaking device and its application

Abstract

The present invention relates to a wave-overcoming multi-purpose wave-breaking device and its application. The wave-breaking device comprises a fixed base (1) connected to each other and an adjustable wave-overcoming wave-breaking structure (2) located above the fixed base (1). The wave-overcoming wave-breaking structure (2) comprises an adjustable bracket (21) and a wave-overcoming wave-breaking beach (22) located above the adjustable bracket (21). The wave-breaking device is used to dissipate incident wave energy. The specific operation is as follows: the wave-breaking device is installed at the end of a circulating water tank, the wave-breaking device is partially immersed in water, the upper edge of the wave-breaking device protrudes from the water surface, and the wave-generating device is activated to form waves. Compared with the existing technology, the present invention has the advantages of improving wave-breaking efficiency while having a certain degree of universality.

Description

Technical Field

[0001] The present invention relates to the field of ocean engineering, and in particular to a wave-riding multi-purpose wave-breaking device and applications thereof. Background Art

[0002] Circulating water flumes are widely used experimental equipment in marine engineering, enabling research into the hydrodynamic performance of waves and structures. The flume's wave-generating performance directly impacts the accuracy of wave tests. Due to the limited length of the flume, incident waves can reflect as they propagate to the tail end, compromising the wave-generating quality within the test area and reducing test accuracy. Repeated wave reflections can even disrupt the test. Therefore, wave-canceling devices are deployed at the tail end of the flume to minimize reflected waves.

[0003] Commonly used wave-absorbing devices can be categorized as upright, sloped, and combined. Upright structures contain a chamber filled with porous material, dissipating waves through the porous structure to achieve wave-absorbing effects. Slopes are formed by inclined or parabolic surfaces, dissipating wave energy by breaking waves. To increase wave energy dissipation, the slopes can be drilled or fitted with attachments. Combined structures combine the characteristics of both structures, resulting in better results but requiring more space. A survey of wave absorbers used in various laboratories revealed that, firstly, the sloped type is the most effective method for wave-absorbing. Secondly, improving the surface roughness and porosity of the wave absorber and filling the cavity with porous material can also improve its performance. Finally, sloped wave absorbers can achieve a certain degree of wave-absorbing effectiveness without having to reach the bottom of the test tank. This can effectively reduce the length of the wave absorber and increase the effective length of the circulating water tank test section. However, issues with sloped wave absorbers remain. Traditional slope wave absorbers are limited to a narrow range of wave parameters and water depths and do not have good universal applicability. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a wave-crossing multi-purpose wave-breaking device and its application that improves wave-breaking efficiency while having a certain universality.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The invention discloses an overtopping multi-purpose wave-breaking device, which comprises mutually connected fixed bases and an adjustable overtopping wave-breaking structure located above the fixed bases.

[0007] Furthermore, the overtopping wave-breaking structure includes an adjustable bracket and a overtopping wave-breaking beach located above the adjustable bracket.

[0008] Furthermore, the wave-breaking beach comprises a plurality of separately arranged organic glass plates, which are slidably connected to the adjustable bracket via a slider nut.

[0009] Furthermore, the adjustable bracket includes a plurality of groups of height-adjustable support rods distributed at equal intervals.

[0010] Furthermore, the inclination angle of the wave-breaking beach is 0-20.0°.

[0011] Furthermore, the fixed base is formed by splicing aluminum profiles.

[0012] Furthermore, the right angles of the fixed base are connected by right-angle connectors.

[0013] An application of the above-mentioned wave-riding multi-purpose wave-breaking device, which is used to dissipate incident wave energy. The specific operation is: the wave-breaking device is installed at the end of the circulating water tank, the wave-breaking device is partially immersed in water, and the upper edge is exposed to the water surface, and the wave-making device is started to form waves.

[0014] Furthermore, the submerged depth of the wave-breaking beach is 100.0-300.0 mm, and the height of the upper edge exposed above the water surface is 0-50.0 mm.

[0015] Furthermore, the wave has a period of 0.8-2.0s and a height of 40-80mm.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] (1) Based on the traditional slope-type wave absorbing device, the present invention designs the height of the upper edge of the wave absorbing device to further dissipate the energy of the incident wave through the overtopping wave and effectively block the reflected wave at the tail of the water tank test section;

[0018] (2) The pores of the wave-breaking device of the present invention are a two-dimensional structure. Compared with the porous medium formed by directly drilling holes on the wave-breaking beach, the use of this structure as a wave-breaking device can make the waves formed by the circulating water tank smoother, which is conducive to the observation of the flow field;

[0019] (3) The wave-breaking beach support of the present invention can be adjusted. By adjusting parameters such as the angle of the wave-breaking beach, the wave application range of the device can be greatly broadened. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the wave-breaking device of the present invention;

[0021] Figure 2 This is a schematic diagram of the fixing bracket of the present invention;

[0022] Figure 3 This is a first schematic diagram of the overtopping wave-breaking structure of the present invention;

[0023] Figure 4 This is a second schematic diagram of the overtopping wave-breaking structure of the present invention;

[0024] Figure 5 Schematic diagram of the working condition of the wave absorbing device in the embodiment;

[0025] Figure 6 2. Flow field diagram around the wave-breaking device in the embodiment;

[0026] The reference numerals in the figure indicate: a fixed base 1 , a wave-breaking structure 2 , an adjustable bracket 21 , and a wave-breaking beach 22 . DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0028] A wave-crossing multi-purpose wave-breaking device and its application, such as Figure 1-4 The wave-breaking device consists of a fixed base 1 and an adjustable overtopping wave-breaking structure 2. The wave-breaking device consists of a fixed base and an adjustable overtopping wave-breaking beach. Among them, the fixed base 1 is spliced ​​by aluminum profiles, the size of each profile is fixed, and the right angles are connected by right-angle connectors to provide support for the overtopping wave-breaking structure 2. The overtopping wave-breaking structure 2 consists of a overtopping wave-breaking beach 22 and an adjustable bracket 21. The overtopping wave-breaking beach 22 is made of a combination of organic glass and is installed on the adjustable bracket 21 through a slider nut and a bolt, and can slide through the slider nut. The four groups of adjustable brackets 21 are equidistantly distributed, effectively supporting the overtopping wave-breaking beach 22. By adjusting the height and distance of the bracket 21, the angle of the overtopping wave-breaking beach 22 can be changed; by sliding the overtopping wave-breaking beach 22, the gap, lower edge immersion depth and upper edge height of the overtopping wave-breaking beach 22 can be adjusted.

[0029] The working principle of this product is as follows. The wave-breaking process of the wave-breaking device is divided into two steps: wave breaking and wave overrunning: First, when the incident wave propagates to the inclined surface of the wave-breaking beach 22, the wave surface is distorted and then broken. The pores on the wave-breaking beach 22 further aggravate the wave-breaking phenomenon, and the wave-breaking dissipates part of the energy of the incident wave. Second, the incident wave continues to surge up the wave-breaking beach 22, and overruns occur when it passes over the upper edge of the wave-breaking beach 22. After the incident wave overruns, it is offset by the reflected wave at the tail of the circulating water tank. The reflected wave is blocked by the upper edge of the inclined surface and cannot directly enter the test section. The two aspects of wave breaking and wave overrunning work together to improve the wave-breaking efficiency of the wave-breaking device and effectively reduce the reflected wave component of the test section.

[0030] Example

[0031] In this embodiment, the wave working conditions are a period of 1.5s, a wave height of 60mm, a controlled tilt angle of 9.5°, a submerged depth of the breakwater beach of 121.4mm, a top edge height of 15.1mm, and a porosity of 18.8%. Figure 5 As shown in the figure, when in use, the wave-canceling device is installed at the end of the water tank, with the majority of it submerged underwater and the upper edge protruding above the water surface. When the incident wave reaches the upper edge, it causes overtopping, further consuming the incident wave energy and improving the device's wave-canceling performance.

[0032] In the specific test, the flow field around the wave breaker changes as follows: Figure 6 As shown in the figure. The wave is transmitted to the wave breaker (0 / 10T) and broken by the inclined surface. The wave rolls over and forms a vortex system near the wave breaker hole (1 / 10-2 / 10T). Subsequently, the vortex systems cancel each other out and decay (3 / 10-5 / 10T). At 3 / 10T, the wave breaks (see the sub-figure box for the test results of wave breaking), causing the wave height to drop. Next, the wave with reduced wave height passes over the upper end of the inclined surface. After overtopping, some energy is consumed again, and then it is offset by the wave reflected from the tail of the test section (6 / 10-8 / 10T). The remaining reflected wave is intercepted by the upper edge of the inclined surface, preventing it from flowing back into the circulating water tank test section. At 9 / 10T, the water surface upstream of the wave breaker inclined surface becomes flat. Thereafter, the flow field around the wave breaker repeats the above process. In summary, the wave breaks and overtopping occurs around the wave breaker, dissipating the energy of the incident wave, thereby achieving the wave breaker effect.

[0033] Currently, the laboratory has honeycomb wave-absorbing devices (vertical type) and multi-layer plate wave-absorbing devices (combined type). Compared with existing porous medium wave-absorbing devices, the present invention's multi-purpose wave-absorbing device for overcoming waves has significantly improved wave-absorbing efficiency and is applicable to a wider range of wave conditions. Specific test data is shown in Table 1. The reflection coefficient is used to indicate the intensity of reflection in the wave pool. The smaller the reflection coefficient, the better the wave-absorbing performance of the wave-absorbing device.

[0034] Table 1 Comparison of reflection coefficients of various wave-breaking devices

[0035]

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other manner. Any person skilled in the art may utilize the above-disclosed technical content to modify or modify the present invention into equivalent embodiments. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention remain within the scope of protection of the present invention.

Claims

1. A multi-purpose wave-breaking device, characterized in that: The wave-breaking device comprises mutually connected fixed bases (1) and an adjustable overtopping wave-breaking structure (2) located above the fixed bases (1); The overtopping wave-breaking structure (2) comprises an adjustable bracket (21) and an overtopping wave-breaking beach (22) located above the adjustable bracket (21); The wave-breaking beach (22) comprises a plurality of separately arranged organic glass plates, which are slidably connected to the adjustable bracket (21) via a slider nut; The adjustable bracket (21) comprises a plurality of height-adjustable support rods distributed at equal intervals.

2. The overboard multi-purpose wave absorbing device according to claim 1, characterized in that: The inclination angle of the wave-breaking beach (22) is 0-20.0°.

3. The overboard multi-purpose wave absorbing device according to claim 1, characterized in that: The fixed base (1) is formed by splicing aluminum profiles.

4. The overboard multi-purpose wave absorbing device according to claim 3, characterized in that: The right angles of the fixed base (1) are connected by right-angle connectors.

5. An application of the overboard multi-purpose wave absorbing device according to any one of claims 1 to 4, characterized in that: The wave-breaking device is used to dissipate incident wave energy. The specific operation is: the wave-breaking device is installed at the end of the circulating water tank, with part of the wave-breaking device submerged in water and the upper edge protruding from the water surface, and the wave-making device is started to form waves.

6. Application of the overboard multi-purpose wave absorbing device according to claim 5, characterized in that: The submerged depth of the wave-breaking beach (22) is 100.0-300.0 mm, and the height of the upper edge exposed above the water surface is 0-50.0 mm.

7. The use of a wave-riding multi-purpose wave-breaking device according to claim 5, characterized in that: The period of the wave is 0.8-2.0s, and the height is 40-80mm.

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