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Method for acquiring container ship resistance

A technology for container ships and ships, applied in ship parts, ship construction, transportation and packaging, etc., can solve the problems of a large number of testing equipment, manpower and material resources, etc.

Active Publication Date: 2013-01-02
DALIAN SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, after the ship is launched, it is also necessary to actually detect the resistance of the ship, which requires a large number of detection equipment and consumes manpower and material resources to complete the detection

Method used

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  • Method for acquiring container ship resistance

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Embodiment Construction

[0060] Such as figure 1 As shown in the flow chart, the process of obtaining ship resistance in the present invention first needs to obtain the main dimensions and related parameters of the ship through design or measurement, specifically including the following process.

[0061] Step 1. Preliminarily determine the main dimensions and other relevant parameters of the designed ship, as follows;

[0062] Lbp: length between vertical lines (m)

[0063] Los: the total length of the waterline (m) (the total length of the waterline is the distance between the rear end of the ship's calculated waterline and the front end below the waterline, such as figure 2 shown)

[0064] Lwl: waterline length (m)

[0065] B: Type width (m)

[0066] T: Draft (m)

[0067] Ta: stern draft (m)

[0068] Tf: bow draft (m)

[0069] Dp: propeller diameter (m)

[0070] The following parameters are obtained by design or calculation:

[0071] Cb: square coefficient

[0072] Cwp: waterplane coefficie...

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Abstract

The invention discloses a method for acquiring container ship resistance. The method includes: firstly, designing or measuring principal dimensions and related parameters of a ship; secondly, acquiring draft total resistance or ballast draft total resistance by the method according to the ship type and the draft / ballast draft statues. The optimized ship wet-surface area calculation method and the optimized wave-making resistance and frictional resistance calculation method are adopted respectively. In addition, by comparing the method with actual ship model test, a novel total-resistance correction method is determined, and a resistance calculation method high in calculating precision and widely applicable is provided for shipping engineers in the initial design phase of container ships, so that ship design efficiency is improved greatly. The method for acquiring container ship resistance is applicable to the ship design phase and the ship resistance actual-detection phase and has the advantages of convenience, high efficiency and accuracy in results.

Description

technical field [0001] The invention relates to a method for obtaining resistance of a ship, and more specifically, relates to obtaining the resistance of the ship due to the action of water during actual sea navigation by determining relevant parameters such as the size of the ship. Background technique [0002] In the process of ship construction, the ship resistance needs to be known in the design stage in order to guide the subsequent parameter design of the ship. For example, in the process of obtaining resistance in the prior art, the following parameters can be determined after the design or construction of the ship is completed: block coefficient Cb, water plane coefficient Cwp, and cross section coefficient Cm. These coefficients are related to the structure of the ship. [0003] The traditional ship resistance estimation methods (such as Series 60 series, Holtrop method, etc.) used in the preliminary design of ships are usually old, with narrow application range (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B9/00
Inventor 田天
Owner DALIAN SHIPBUILDING IND
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