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Viscous wave-making flow field analysis-based trimaran demihull layout optimization design method

A layout optimization and design method technology, applied in design optimization/simulation, calculation, special data processing applications, etc., can solve the problems of high research cost, manpower and material resources, failure to obtain viscous resistance and ship wave-making flow field, etc., to achieve The effect of strong engineering applicability

Active Publication Date: 2017-05-24
CHINA SHIP DEV & DESIGN CENT
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  • Claims
  • Application Information

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Problems solved by technology

However, it can only accurately simulate the wave-making resistance, but cannot obtain the viscous resistance and the wave-making flow field around the ship, and fails to propose a method for the layout of the plates
The model test adopts the enumeration method, selects a certain plan through limited tests, the research cost is high, manpower and material resources are consumed, and the selected plan cannot be guaranteed to be the optimal plan
[0004] So far, there is no corresponding optimization design method for trimaran hull layout in China

Method used

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, further illustrate the embodiment of this intellectual achievement. According to the trimaran hull layout optimization design method based on viscous wave-making flow field analysis of the present invention, its main steps are as follows:

[0034] (1) Establish the main hull and hull of the trimaran, and CFD calculation reduction model (such as figure 1 shown), the model is built up to a certain height on the design waterline;

[0035] (2) Separate the main body from the sheet, and first perform numerical simulation on the viscous wave-making flow field of the main body;

[0036] (3) Since the calculation model is completely symmetrical along the mid-longitudinal section, in order to simplify the calculation, only half of the model is taken for geometric modeling and grid division, and the other half is mirrored (such as image 3 shown). In order to make the calculation results not affected by the boundary conditions as...

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Abstract

The invention discloses a viscous wave-making flow field analysis-based trimaran demihull layout optimization design method. Through analysis of a main hull and waveform analysis of demihulls, peak energy and valley energy are counteracted mutually to form favorable interference, so that the pressure distribution of a whole ship is more uniform and fluent, the total resistance of a trimaran is reduced, the navigational speed is increased, the fuel consumption is reduced, the running cost is reduced, and the project feasibility is achieved. Compared with the prior art, the viscous wave-making flow field analysis-based trimaran demihull layout optimization design method has the advantages that the research and development cycle is short, the technical risk is controllable, the test cost can be reduced, the manpower and material resource input is reduced, and important assistance is provided for improving the overall design quality of the ship.

Description

technical field [0001] The invention relates to the overall technical field of ships, in particular to a design method for directing the layout of medium and high-speed trimaran hulls by analyzing the viscous wave-making flow field of the ship. Background technique [0002] In recent years, trimarans have attracted more and more attention due to their advantages such as rapidity and seakeeping. Its underwater part is composed of a central hull (main hull) and two small side hulls (auxiliary hulls). Increase wave resistance and obtain a larger deck area per unit displacement volume. Therefore, the trimaran has great research value and application potential. [0003] Compared with the monohull, there is complex wave-making interference between the main body and the side hulls of the trimaran. Studies have shown that there is a close relationship between the shape lines of the trimaran's main body and side hulls, the position of the side hulls, and the resistance of the trim...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20Y02T90/00
Inventor 傅江妍贺懿丽鲍利群周芃
Owner CHINA SHIP DEV & DESIGN CENT
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