Shark fin bow structure and bulbous bow ship form thereof

A shark fin and bulbous bow technology is applied in the field of shark fin ship bow structure and its bulbous bow shape, which can solve the problems of increasing the contact area between the ship and the water, disturbance of the flow field, and increasing the viscous resistance of the ship. The effect of breaking wave resistance, reducing wave resistance increase, and reducing additional resistance value-added

Active Publication Date: 2019-06-18
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the bulbous bow also has certain problems.
Due to the addition of the bulbous bow structure, the contact area between the ship and water is increased, that is, the wet surface area of ​​the ship, and the viscous resistance of water to the ship is increased. Once the shape design is unreasonable, it may "increase resistance" to the

Method used

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  • Shark fin bow structure and bulbous bow ship form thereof
  • Shark fin bow structure and bulbous bow ship form thereof
  • Shark fin bow structure and bulbous bow ship form thereof

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with specific examples and accompanying drawings.

[0018] The invention provides a shark fin bow structure, such as figure 1 As shown, this structure includes an upper part 1 and a lower part, and the lower part is a bulbous nose 2; the front end of the upper part is perpendicular to the sea level, extends upwards to the surface of the bow of the hull, connects downwards to the bulbous nose 2, and connects to the light of the hull backward. Shun connection.

[0019] figure 2 It is a side view of the ship type in the prior art, and there is a depression between the upper part 3 and the bulbous nose 2 of the ship type in the prior art; as image 3 Shown, improve on prior art ship type, install the upper part 1 of the present invention additionally as appendage structure; As Figure 4 Shown, the left half is the front view of prior art ship type A, and half part is the front view of ship type B of th...

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PUM

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Abstract

The invention provides a shark fin bow structure. The shark fin bow structure comprises an upper power and a lower portion, wherein the lower portion is a bulb, the front end of the upper portion is perpendicular to the seal level and extends upwards to the surface of a ship bow and is downwards connected to the bulb and backwards smoothly connected with a ship body. With a narrow front end similar to that of the ship bow, the shark fin bow structure can change the flowing conditions of waterflow in the recessed part of an original bulb, lower the streamline expansion degree and effectively reduce the wave breaking resistance during ship navigation without affecting the reducing effects of a bulbous bow on wave making resistance, thereby solving the problem of resistance increase of a large bulbous bow ship form during medium and low-speed navigation.

Description

technical field [0001] The invention relates to the field of ship design, in particular to a shark fin bow structure and a bulbous bow hull shape. Background technique [0002] The bulbous bow, also known as the "bulb bow", is the bulbous protruding part below the water surface of the bow, which is a structure used to reduce the resistance of the ship. Its size and shape can be matched with the hull to offset the water pressure, so that the generated ship waves are small, and the water flow near the hull can be improved to reduce the resistance of the ship. The spherical part is also called the ball nose, and its types include drop-shaped, angled-shaped, SV-shaped, pear-shaped, etc. Different shapes have their advantages and are suitable for different ship types. For example, the drop type is more suitable for passenger and cargo ships with high speed, while the bump type ball nose is suitable for plump oil tankers, ore carriers and bulk carriers. However, the structure o...

Claims

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Application Information

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IPC IPC(8): B63B1/40B63B3/00
CPCY02T70/10
Inventor 刘佳仑阚瑾瑜周涛陈鹏飞张艳云
Owner WUHAN UNIV OF TECH
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