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A non-reflection wave control device and design method

A control device and wave technology, applied in the direction of breakwaters, shore walls, geometric CAD, etc., can solve the problems of no longer maintaining plane waves, reducing wave reflection, wave field disorder, etc.

Active Publication Date: 2021-06-08
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When a plane wave encounters a solid structure, it will always reflect, causing the wave field around the solid structure to be disordered, and the characteristics of the plane wave will no longer be maintained.
In previous theoretical research and practice, there has been no effective way to reduce the reflection of waves while maintaining the wave field characteristics of plane waves

Method used

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  • A non-reflection wave control device and design method
  • A non-reflection wave control device and design method
  • A non-reflection wave control device and design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Take a kind of frustum-shaped body, and the outer diameter of the upper bottom surface of the frustum-like body is r o =70mm, the inner diameter of the bottom surface is r i =35mm, the height of the body is H i =6mm, the side of the body is a height gradient surface, which is formed by a curve rotating around the rotation axis of the body, such as figure 1 shown;

[0040] (2) 50 baffles with a thickness of 1 mm are evenly arranged on the side of the body along the circumferential direction, and the baffles are placed radially along the body, and the baffles start from the edge of the lower bottom surface of the body in the radial direction and end at the upper bottom surface of the body Edge; a groove is formed between two adjacent baffles and the side of the body;

[0041] (3) When the body is submerged in water, the top of the baffle is higher than the water surface, and the depth of the bottom of the body is h 0 , h 0 =8mm; the depth of the bottom surface of...

Embodiment 2

[0054] (1) Take a kind of frustum-shaped body, and the outer diameter of the upper bottom surface of the frustum-like body is r o =428.88mm, the inner diameter of the bottom surface is r i =247.61mm, the height of the body is H i =66.67mm, the side of the body is a height gradient surface, which is formed by rotating a curve around the rotation axis of the body;

[0055] (2) 50 baffles with a thickness of 0.5mm are evenly arranged on the side of the body along the circumferential direction, and the baffles are placed radially along the body. The edge of the bottom surface; a groove is formed between two adjacent baffles and the side of the body;

[0056] (3) When the body is submerged in water, the top of the baffle is higher than the water surface, and the depth of the bottom of the body is h 0 , h 0 = 100mm; the depth of the bottom surface of the body is h i = h 0 -H i =100mm-66.67mm=33.33mm, the water depth distribution between the upper and lower bottom surfaces of ...

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Abstract

The invention discloses a non-reflection wave control device and a design method. The device has an inner diameter r i The height of the structure in the inner region is the same, and at the outer diameter r o The height is 0, the inner diameter r i and outer diameter r o The height of the structure in the intermediate area changes gradually, and a plurality of baffles are arranged in the height changing area to form grooves. When the frustum-shaped body is immersed in water, and when a plane wave with a specific wavelength and frequency is incident, the plane wave hardly reflects around the frustum-shaped structure, thereby reducing the wave energy loss around the frustum-shaped body and entering into the The wave inside the frustum-like body is still a plane wave, and the wave amplitude is amplified at the same time.

Description

technical field [0001] The invention belongs to the field of wave theory and engineering, in particular to a non-reflection wave control device and a design method. Background technique [0002] When a plane wave encounters a solid structure, it will always be reflected, causing the wave field around the solid structure to be disordered and no longer maintain the characteristics of a plane wave. In previous theoretical research and practice, there has been no effective way to reduce the reflection of waves while maintaining the wave field characteristics of plane waves. If a structure can be proposed that can significantly eliminate wave reflection around the solid structure, or even have no reflection, it can greatly reduce the loss of wave energy around the solid structure, which is very valuable for improving the efficiency of wave energy collection. In addition, this structure can be used for the measurement of wave field parameters, which can not only obtain the charac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13E02B3/06
CPCY02A10/11
Inventor 王振宇陈焕阳李春阳徐林
Owner ZHEJIANG UNIV
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