Hydrodynamic derivative determination method, computer readable storage medium and equipment

A determination method and hydrodynamic technology, applied in the field of simulation analysis, can solve the problems of low accuracy of ship maneuverability model calculation results, long time period for determination of hydrodynamic derivatives, and high cost, so as to shorten the modeling cycle and achieve high accuracy of calculation results. low cost effect

Pending Publication Date: 2020-09-01
智慧航海(青岛)科技有限公司
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Problems solved by technology

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, this application proposes a method for determining the hydrodynamic derivative in the modeling process of the ship maneuverability model, which solves

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  • Hydrodynamic derivative determination method, computer readable storage medium and equipment
  • Hydrodynamic derivative determination method, computer readable storage medium and equipment
  • Hydrodynamic derivative determination method, computer readable storage medium and equipment

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Embodiment Construction

[0048]In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0049] Aiming at the problem of long time period and high cost for determining the hydrodynamic derivative in the modeling process of the existing ship maneuverability model, which leads to the problem of low precision of the calculation result of the ship maneuverability model, the embodiment of the present invention proposes a process of modeling the ship maneuverability model The determination method of the hydrodynamic derivative is based on the established ship motion equation, conducts the ship model experiment and obtains the ship model experimental data, and fits the test data by quadratic fitting to determine the hydrodynamic derivative. Wherein, the method for determining the hydrodynamic derivative in the modeling process of the ship maneuverability mo...

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Abstract

The invention belongs to the technical field of simulation analysis, and particularly relates to a hydrodynamic derivative determination method, a computer readable storage medium and equipment. The method comprises the steps of creating a fixed coordinate system fixed in space and a movable coordinate system fixed on a ship and creating a speed conversion relationship according to the relationship between the fixed coordinate system and the movable coordinate system; sequentially establishing a three-degree-of-freedom control equation, a ship hydrodynamic equation and a ship motion equation according to the MMG motion model; performing a ship model experiment based on the ship motion equation to obtain ship model experiment data; and carrying out fitting processing on the ship model experiment data by adopting a quadratic adjacent regression method to obtain a hydrodynamic derivative of the ship. The invention is low in technical requirement, short in time period and low in cost; compared with a method for determining the hydrodynamic derivative through a pure empirical formula, the method is higher in precision.

Description

technical field [0001] The invention belongs to the technical field of simulation analysis, and in particular relates to a method for determining a hydrodynamic derivative in the modeling process of a ship maneuverability model, a computer-readable storage medium and a computer device. Background technique [0002] With the development of the shipping industry, new ships and intelligent ships have gradually attracted widespread attention. Whether the maneuverability of ships can meet the safety requirements has always been a subject of great concern. Forecasting maneuverability is a very important work, and there are four main methods for predicting ship maneuverability: empirical formula method, constraint test method, numerical simulation method based on CFD, mathematical model of ship maneuvering motion plus computer simulation. Among them, the premise of using the mathematical model of ship maneuvering motion plus computer simulation is the modeling of the mathematical m...

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Application Information

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IPC IPC(8): G06F30/15G06F17/18G06F119/14
CPCG06F30/15G06F17/18G06F2119/14Y02T90/00
Inventor 王晓原夏媛媛姜雨函朱慎超王芳涵王赞恩陈钒烨
Owner 智慧航海(青岛)科技有限公司
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