Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for damping waves and reducing resistance of high-speed trimaran by adding wing

A trimaran and wave-suppression technology, applied in the field of ship hydrodynamics and ship shape

Inactive Publication Date: 2010-11-03
NAVAL UNIV OF ENG PLA
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Several thousand-ton high-speed trimarans have been put into practical use abroad, including civilian ships and military ships, but no high-speed trimaran has been put into practical use in China

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for damping waves and reducing resistance of high-speed trimaran by adding wing
  • Method for damping waves and reducing resistance of high-speed trimaran by adding wing
  • Method for damping waves and reducing resistance of high-speed trimaran by adding wing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] according to Figure 1-9 As shown in the figure, a high-speed trimaran added wing wave and drag reduction method, according to the theoretical calculation method of wave-making resistance of a high-speed trimaran with wave-absorbing wings proposed by the present invention, and using the proposed optimization design technology, a target high-speed trimaran is obtained. Optimization design scheme of trimaran wave-absorbing wing. Model resistance tests are carried out on the high-speed trimaran with and without the optimized design wave-absorber. The length of the test ship model is 5m. The parameters of the wave-absorbing wing in the model test are shown in Table 2.

[0104] Table 2 Parameters of wave-absorbing wing in ship model test

[0105]

[0106] Figure 9 Shown is the comparison of the residual drag coefficient curves of the high-speed trimaran with the optimized design of the wave-absorbing wing according to this method and the high-speed trimaran without th...

Embodiment 2

[0108] according to Figure 1-8 , Figure 10-11 As shown in the figure, a high-speed trimaran added wing wave and drag reduction method, according to this method, the parameters of the 200-ton trimaran high-speed boat's wave-absorption wing are optimized and the drag reduction efficiency is predicted. The optimal design and drag prediction process of the wave-absorbing wing are described as follows.

[0109] ①The speed of the optimized design calculation is determined: take the speed V=22kn as the optimized calculation speed, and carry out the optimization design calculation of the wave-absorbing wing parameters at each speed.

[0110] ②Cancel the input parameters of the wave wing:

[0111] Dihedral angle: β f =0.0

[0112] Sharpening ratio: η f = 1.0 (rectangular wing)

[0113] Absorber profile: Symmetrical parabolic bow

[0114] Longitudinal offset of side body: a=26m

[0115] Lateral offset of side body: p=7.8m

[0116] Main hull length: L=52m

[0117] Main hull w...

Embodiment 3

[0135] according to Figure 1-9 , Figure 12-13 As shown, a high-speed trimaran added wing wave and drag reduction method, according to the optimization design method of the 200-ton high-speed trimaran wave-absorption wing, the parameters of the 300-ton trimaran high-speed ship's wave-absorption wing are optimized and the drag reduction is predicted. Efficiency, the design parameters of the wave breaker are shown in Table 6, and the total resistance curve of the boat before and after the wave breaker is installed is shown in Table 6. Figure 12 As shown, the drag reduction efficiency is as Figure 13 shown, Figure 12 , 13 The corresponding data are listed in Table 7. like Figure 13 , as shown in Table 7, the maximum drag reduction efficiency of the 300-ton trimaran high-speed boat wave-absorptive wing is 13.5%, the maximum drag reduction efficiency speed is 23.7kn, and the applicable speed is about 18.8kn ~ 43kn.

[0136] Table 6 Parameters of 300-ton real boat wave-ab...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for damping waves and reducing resistance of a high-speed trimaran by adding a wing. A wave damping wing is added in the position near the water under the head water level of the middle body of the high-speed trimaran. The method is especially suitable for overcoming the adverse factors of side splashing and added waves caused by the direct action of the middle waves of the high-speed trimaran on side bodies in the popularization and application of the high-speed trimaran; and the wave damping wing of the high-speed trimaran, which is optimized and designed according to the optimizing method for damping the waves and reducing the resistance of the high-speed trimaran by adding the wing, can obviously damp side splashing and the added waves caused by the middle waves of the high-speed trimaran and the direct action on the side bodies. The method is suitable for the optimizing design of the wave damping wing of the high-speed trimaran of various type and dimensions and for different purposes. After the wave damping wing is popularized, great economic and military benefits can be obtained. Meanwhile, the wave damping wing has the strategic significance of energy saving, discharge reduction, prevention and treatment of environmental pollution, climate change and the like. In addition, the invention discloses a basic principle and a basic method belonging to the field of ship hydrodynamics and ship science with great theoretical significance.

Description

technical field [0001] The invention relates to the technical fields of ship hydrodynamics and ship typology, in particular to a method for wave elimination and drag reduction of a high-speed trimaran by adding wings. Background technique [0002] The high-speed trimaran itself is an excellent new type of ship, and it has a wide range of applications (prospects), and can be used as both a civilian ship and a military ship; it can be used as a small boat or a medium and large ship. The applicable displacement For ships of 100-ton class, 1,000-ton class ships, up to 10,000-ton class ships. Several thousand-ton high-speed trimarans have been put into practical use abroad, including civilian ships and military ships, but no high-speed trimaran has been put into practice in China. In the research and application of high-speed trimarans at home and abroad, it is found that the direct effect of wave-making in the high-speed trimaran on the side body is very serious, which signific...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B63B1/40B63B3/14B63B9/00G06F17/50
CPCY02T70/14Y02T70/146Y02T70/125Y02T70/10
Inventor 王中卢晓平崔焰
Owner NAVAL UNIV OF ENG PLA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com