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A Method for Solving Hydrodynamic Coefficients Based on Multivariate Parallel Operation of Genetic Algorithm

A technology of hydrodynamic coefficient and genetic algorithm, applied in the field of hydrodynamic coefficient solution, can solve problems such as conservative calculation results, unfavorable structural optimization design platform risk assessment and stability analysis, etc., to achieve the effect of improving calculation accuracy and efficiency

Active Publication Date: 2019-04-16
OCEAN UNIV OF CHINA
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Problems solved by technology

Although this method is simple and easy to implement, the calculation results are conservative, which is not conducive to the optimal design of the structure and the subsequent risk assessment and stability analysis of the platform.

Method used

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  • A Method for Solving Hydrodynamic Coefficients Based on Multivariate Parallel Operation of Genetic Algorithm
  • A Method for Solving Hydrodynamic Coefficients Based on Multivariate Parallel Operation of Genetic Algorithm
  • A Method for Solving Hydrodynamic Coefficients Based on Multivariate Parallel Operation of Genetic Algorithm

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Embodiment 1

[0038] Example 1: Participation Figure 1 to Figure 5 , a method for solving hydrodynamic coefficients based on multivariable parallel operation of genetic algorithm, which includes the following steps:

[0039] A. Select the genetic algorithm as the reference model for solving the hydrodynamic coefficient.

[0040] B. Take the wave theory, determine the equation for calculating the wave force, determine the coordinate system of the target model, and establish the target function.

[0041] B1. Select Stokes wave theory to describe the motion characteristics of waves, and its water particle velocity V and water particle acceleration a can be expressed as:

[0042] V=(H,L,T,X,Z,t)

[0043] a=(H,L,T,X,Z,t)

[0044] In the formula: H is the wave height, L is the wavelength, T is the wave period, X is the position of the water particle on the horizontal axis in the wave profile, Z is the depth of the water particle, and t is the time.

[0045] Wave theory is a theory that descr...

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Abstract

The invention discloses a hydrodynamic coefficient solving method based on the multivariable parallel computation of a genetic algorithm. The hydrodynamic coefficient solving method has the technical scheme that the hydrodynamic coefficient solving method comprises the following steps: selecting a genetic algorithm as a reference model of hydrodynamic coefficient solving, determining a target function, setting a genetic algorithm, outputting an optimal solution, analyzing a genetic algorithm result and the like. The calculation accuracy and efficiency of a hydrodynamic coefficient can be improved, and a solid foundation is laid for the optimization design of a later period structure, the risk assessment of a platform and stability analysis.

Description

technical field [0001] The invention belongs to the field of marine technology, in particular to a method for solving hydrodynamic coefficients. Background technique [0002] In the process of marine development, the working environment is very harsh, and it is often affected by various environmental loads such as sea wind, waves, currents, sea ice, tides, earthquakes, etc., making the construction of offshore jack-up platforms more complicated and expensive, and the external Load and structural strength criteria are difficult to determine precisely. Wave and current loads are the control loads of offshore structures, which play a very important role in the cost, safety and life of the project. Therefore, accurate calculation of wave and current loads and reasonable strength assessment are particularly important in the design stage of jack-up platforms . When working, the jack-up platform relies on the support of pile legs to stand on the seabed for drilling operations, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/11G06F17/50G06N3/12
CPCG06F17/11G06F30/13G06N3/126Y02A20/152
Inventor 穆为磊陈鹏飞曲文声刘贵杰田晓洁
Owner OCEAN UNIV OF CHINA
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