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Determination Method of Calculation Step Size of Cylindrical Array Wave Force Curve Based on Concentration and Cancellation

A technology of wave force and cylinder, which is applied in the field of determining the calculation step size of the wave force amplitude curve, and can solve problems such as time-consuming, laborious, expensive, and heavy

Active Publication Date: 2020-08-14
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Description
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Problems solved by technology

This process is tedious and time-consuming even for very experienced specialists
For the inexperienced or completely inexperienced, the process can be very onerous and costly

Method used

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  • Determination Method of Calculation Step Size of Cylindrical Array Wave Force Curve Based on Concentration and Cancellation
  • Determination Method of Calculation Step Size of Cylindrical Array Wave Force Curve Based on Concentration and Cancellation
  • Determination Method of Calculation Step Size of Cylindrical Array Wave Force Curve Based on Concentration and Cancellation

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Embodiment Construction

[0086] Before elaborating the specific content of the present invention in detail, first introduce the method for determining the position and range of the wave force curve to capture the relevant areas (area I and area II) obtained by synthesizing the existing research results and our analysis results. (Region I and region II are the capture-related regions mentioned above. These two regions have significantly higher and deeper peaks and valleys than region III. In addition, another feature of these two regions is that the fluctuation distance changes with the dimensionless wave number changes)

[0087] 1) Area I (capturing the relevant area)

[0088] At present, many literatures have studied the trapped mode frequency problem of an infinitely long cylindrical array or a single cylinder arranged on the center line of a tank. These results can estimate the near-trapping wavenumber of a finite number of cylindrical arrays sitting on the bottom, that is, the position of area I c...

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Abstract

The invention provides a method for determining a calculation step length of a cylindrical array wave force curve based on construction and destruction. The method comprises the following steps: establishing a cylindrical array coordinate system consisting of limited identical bottom-supported cylinders and arranged in a straight line, and determining related parameters; analyzing conditions of left-turn diffracted waves and right-turn diffracted waves of cylinders when the wave incident angle is equal to zero and not equal to zero, and obtaining a final expression of a wave force curve of anycylinder in the non-capture area to describe a model; And determining the calculation step length of each region on the basis of the calculation step length. According to the prediction formula, theworkload can be reduced on the premise that the precision is ensured; According to the calculation step length determination method, an accurate wave force curve can be obtained on the premise that unnecessary calculation time is not blindly increased.

Description

technical field [0001] The present invention relates to the field of marine engineering, and in particular to the determination of the calculation step size of the wave force amplitude curve for establishing the wave force amplitude curve of any cylinder subjected to wave force by using the principle of constructive and destructive waves for a cylinder array composed of a large number of cylinders penetrating the water surface under the action of waves method. Background technique [0002] The ocean, which accounts for 71% of the earth's surface area, is rich in recoverable resources such as oil and natural gas, and renewable energy such as wind energy and wave energy that can be used by human beings for a long time. With the increasing demand for energy and resources in economic development, it has become an obvious trend to expand living space in the ocean and seek various materials and energy supplies. [0003] Whether it is the exploitation of marine resources, the deve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/13
Inventor 曾晓辉于法军孙哲
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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