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A virtual resistance experiment method and system of a three-dimensional digital ship model

A three-dimensional digital and resistance test technology, applied in the direction of fluid dynamics test, machine/structural component test, instrument, etc., can solve problems such as relatively mature and reliable theory, save grid division time, improve calculation accuracy, Avoid the effects of scale effects

Active Publication Date: 2020-07-24
HUAZHONG UNIV OF SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

[0004] Although hydrodynamic methods and calculation techniques have made great progress in recent years, there is still no relatively mature and reliable theory

Method used

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  • A virtual resistance experiment method and system of a three-dimensional digital ship model
  • A virtual resistance experiment method and system of a three-dimensional digital ship model
  • A virtual resistance experiment method and system of a three-dimensional digital ship model

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Embodiment Construction

[0069] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0070] like Figure 16 As shown, the main steps of the three-dimensional digital ship model virtual resistance test method of the present invention are as follows:

[0071] (1) Establish the ship model digital model and the flow field calculation domain where the ship model digital model is located;

[0072] (2) A fully structured hexahedral grid is arranged in the flow field calculation domai...

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Abstract

The invention discloses a three-dimensional digital ship model virtual resistance test method and system, and belongs to the field of surface ship resistance performance experiments. The method comprises the following steps of (1) establishing digital ship models and flow field calculation domains where the digital ship models are located; (2) arranging full-structured hexahedral grids in the flowfield calculation domains around the digital ship models, and discretizing the flow field calculation domains; (3) setting boundary conditions, dividing the hexahedral grids to simulate the free surface movement and the non-free surface movement of the digital ship models, and respectively measuring a wave-making resistance coefficient and a viscous resistance coefficient of the digital ship models; (4) obtaining a total resistance coefficient of the ship and flow field information in the flow field calculation domains through the wave-making resistance coefficient and the viscous resistancecoefficient; and (5) carrying out fluid power analysis on the flow field information to obtain a ship free surface wave height distribution curve and a ship free surface wave-making distribution clouddiagram. The method and the system provided by the invention can provide reliable water power data and flow field information for the design and optimization of the ship.

Description

technical field [0001] The invention belongs to the field of resistance performance experiments of surface warships, and more particularly relates to a virtual resistance experiment method and system of a three-dimensional digital ship model. Background technique [0002] The research on the hydrodynamic performance of ships is the basis of ship comprehensive navigation performance prediction technology, and it is also one of the key issues that need to be solved first in the research and development of new ships. The hydrodynamic performance of ships includes many aspects and involves many disciplines, among which ship resistance is one of the important performances in hydrodynamic performance. The pros and cons of resistance performance will affect the usability and economy of the ship to a certain extent for civil ships, and for military ships, the resistance performance is closely related to improving the combat performance of the ship. [0003] Ship resistance predicti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 孙江龙涂海文张磊
Owner HUAZHONG UNIV OF SCI & TECH
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