Reflection wave separation method of nonlinear wave based on principle of waveform superposition

A technology of superposition principle and separation method, applied in the field of ocean engineering

Active Publication Date: 2017-12-19
WUHAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for separating reflected waves of nonlinear waves based on the principle of waveform superposition, which can solve the above-mentioned deficiencies of the traditional method for separating waves of reflected waves. The measurement method is simple, the solution process is easy, and it is suitable for linear and arbitrary high-order Nonlinear regular wave problem, improving the efficiency of reflected wave separation

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  • Reflection wave separation method of nonlinear wave based on principle of waveform superposition
  • Reflection wave separation method of nonlinear wave based on principle of waveform superposition
  • Reflection wave separation method of nonlinear wave based on principle of waveform superposition

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0044]The present invention comprises the following steps:

[0045] Step 1: Install the experimental equipment in the wave tank 4 in the laboratory in the order of wave-making equipment 1, wave height meter 2, and reflection model 3, and connect the wave height meter 2 with the data processor 5, as shown in figure 1 As shown in , two groups of wave-making experiments with the same wave-making parameters were conducted without reflection model 3 and with reflection model 3 respectively.

[0046] "Experimental equipment" includes: wave-making equipment 1 , wave height meter 2 , reflection model 3 , wave tank 4 and data processor 5 . The wave-making equipment 1 is controlled by a servo motor and is used to generate the required waves, and its wave-making stability and repeatability error are within 5%; the wave height meter 2 is used to collect wave dat...

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Abstract

The invention discloses a reflection wave separation method of a nonlinear wave based on the principle of waveform superposition. Through using a single fixed wave height meter to measure an incident wave with enough duration and a synthesis wave with the superposition of the incident wave and a reflection wave, the principle of waveform linear superposition is applied, the excellent stability and repeatability of the incident wave created by a wave tank are considered, the synthesis wave is directly subtracted from the incident wave, a reflection waveform can be obtained, and thus the purpose of separating the reflection wave is achieved. According to the method, only the single fixed measurement instrument is needed, and the method is suitable for linear and arbitrary high-order nonlinear regular wave problems. The measurement method is simple, the solution process is easy, and the separation efficiency of the reflection wave is improved.

Description

technical field [0001] The invention belongs to the technical field of marine engineering, and in particular relates to a method for separating reflected waves of nonlinear waves based on the principle of waveform superposition. Background technique [0002] When wave propagation encounters a large object, the wave is reflected. The reflected wave and the incident wave are superimposed on each other in front of the structure to form a composite wave. When studying the hydrodynamic performance of breakwaters in the laboratory, reflection coefficient is one of the important parameters to measure. Separating the reflected wave from the synthesized waveform is of great significance for the study of the hydrodynamic performance of breakwaters. Currently, there are two broad categories of methods for separating reflected waves: separation methods that are only applicable to linear waves and separation methods that are applicable to nonlinear waves. The separation methods suitab...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00G01C5/00
CPCG01C5/00G01M10/00
Inventor 吴静萍何博张敏盘俊
Owner WUHAN UNIV OF TECH
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