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Actually-measured wind wave condition screening and theoretical spectrum fitting method based on P-M spectrum and JONSWAP spectrum

A screening method and wind and wave technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of few modifiable items, failure, poor fitting effect, etc., so as to improve the scope of application and realize accurate expression Effect

Active Publication Date: 2017-05-17
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to too few modifiable items, the fitting effect is not good in some sea conditions, or even completely out of order.

Method used

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  • Actually-measured wind wave condition screening and theoretical spectrum fitting method based on P-M spectrum and JONSWAP spectrum
  • Actually-measured wind wave condition screening and theoretical spectrum fitting method based on P-M spectrum and JONSWAP spectrum
  • Actually-measured wind wave condition screening and theoretical spectrum fitting method based on P-M spectrum and JONSWAP spectrum

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention:

[0036] Such as Figure 1-5 Shown:

[0037] In conjunction with accompanying drawing, technical solution of the present invention is described in further detail:

[0038] The wind and wave situation screening and spectrum fitting method are based on the actual measurement of fixed points in the sea area, and are realized according to the sea surface elevation time domain sequence in the measured data.

[0039] figure 1 It is a flow chart of a calculation method for screening wind and wave data based on the peak period relationship between the P-M spectrum and the measured spectrum. In this embodiment, the known sea surface elevation time series is used as an exa...

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Abstract

The invention discloses an actually-measured wind wave condition screening and theoretical spectrum fitting method based on a P-M spectrum and a JONSWAP spectrum. The method has the following advantages that for the fact that only part of actual wind wave conditions are fully-developed wind wave conditions, the wind wave conditions can be well screened according to the relation between the spectrum peak frequency of an actually-measured spectrum and the spectrum peak frequency of the P-M spectrum, and accurate actually-measured spectrum data is provided for wind wave spectrum fitting work. By increasing modifiable parameters for the JONSWAP spectrum and conducting fitting processing again, the application range of the theoretical spectrum can be widened, and accurate expression of the spectrum under the wind wave conditions is achieved.

Description

technical field [0001] The present invention relates to a screening of measured ocean wave conditions and a fitting method for the measured ocean wave spectrum, in particular to a screening of measured wind and wave conditions and a spectrum fitting method based on P-M spectrum and JONSWAP spectrum. Involving patent classification number G06 Calculation; Calculation; Counting G06F Electrical digital data processing G06F19 / 00 Apparatus or methods for digital calculation or data processing specially adapted for specific applications. Background technique [0002] In the prediction and application of ocean wave energy, the study of theoretical spectrum model is an important analysis method. The theoretical spectrum model can determine the distribution of the corresponding wave energy at each frequency position based on the measured or assumed wave elements, so as to provide information such as the frequency position of the peak energy and the energy at each frequency. At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 邹丽裴玉国孙铁志宗智姜胜超张九鸣
Owner DALIAN UNIV OF TECH