CN102951261A - Forming method for stern structure of ship attached with asymmetric twisted flow control fin - Google Patents
Forming method for stern structure of ship attached with asymmetric twisted flow control fin Download PDFInfo
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- CN102951261A CN102951261A CN2012100979342A CN201210097934A CN102951261A CN 102951261 A CN102951261 A CN 102951261A CN 2012100979342 A CN2012100979342 A CN 2012100979342A CN 201210097934 A CN201210097934 A CN 201210097934A CN 102951261 A CN102951261 A CN 102951261A
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- Prior art keywords
- stern
- attachment
- attached
- flow
- reverses
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
- B63B1/08—Shape of aft part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
- B63H5/15—Nozzles, e.g. Kort-type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention relates to a forming method for stern structure of a ship attached with asymmetric twisted flow control fins. The asymmetric twisted flow control fins can realize the uniform flow velocity distribution of an influent stream toward a propeller and enables the energy loss amount caused by the rotation steam of a propeller wake during the ship navigation to b e reduced. The method comprises the steps of preparing a plurality of stern attached fittings, modeling a fluid flow formed by a ship navigating forward, determining the attached positions, sizes, attached angles and twisted angles of the stern attached fittings which enables the ship energy loss amount to be reduced based on the modeled fluid flow, wherein at least a part of but not all the stern attached fittings are attached at different positions, possess different lengths, and possess at least one of the twisted structure and asymmetric cross section structure. The twisted structure twists based on different rotation axes.
Description
Technical field
Present invention relates in general to form the method for the stern construction of the asymmetric mobile control fin that reverses of having of boats and ships, and relate more specifically to form a kind of like this method with stern construction of the asymmetric mobile control fin that reverses, this asymmetric mobile control fin that reverses can be realized when the angle of rake even velocity of flow that enters stream distributes and can be reduced in ship's navigation the amount of power loss that the rotary current by propeller wake (propeller wake) causes.
Background technology
Usually, by the propulsive force that is installed in the angle of rake rotation generation boats and ships in the stern.Propelling unit promotes water, and boats and ships move forward by the counteraction of propelling thrust.Yet, seawater flowing in angle of rake front and rear can not be direct current fully, but on the contrary in response to the rapid variation of the configuration of stern and form rotary current heterogeneous, wherein, this rotary current flow to this propelling unit and so that the speed ability of boats and ships and angle of rake cavitation erosion degradation.The rotary current of propeller wake also causes degradation of energy.Therefore, need such technology, this technology can realize distributing and minimizing the amount of power loss that the rotary current by propeller wake causes to the angle of rake even velocity of flow that enters stream.
Summary of the invention
Therefore, form the present invention in view of the problems referred to above that in correlation technique, occur, and the object of the invention is to propose the method that a kind of formation has the stern construction of the asymmetric mobile control fin that reverses, this asymmetric mobile control fin that reverses can be realized distributing and can minimizing the amount of power loss that the rotary current by propeller wake causes to the angle of rake even velocity of flow that enters stream.
To achieve these goals, according to an aspect of the present invention, provide a kind of formation to have the method for the stern construction of the asymmetric mobile control fin that reverses, the method comprises: prepare a plurality of stern attachments; The flow that is formed by navigable boats and ships is carried out modeling; And based on definite attachment location, size, attached angle and the windup-degree that can reduce the described stern attachment of amount of power loss of the flow of institute's modeling, the wherein at least a portion in these stern attachments but the non-diverse location place that all is attached at, has different length, and have at least a structure in torsion structure and the unsymmetrical section structure, described torsion structure reverses based on different rotation axiss.
In one embodiment, described stern attachment has described torsion structure and described unsymmetrical section structure.
In one embodiment, described flow being carried out modeling also can comprise: analyze energy-saving effect by the flow around the stern of simulating attached described stern attachment, propulsion unit and rudder.
In one embodiment, attachment location, size, attached angle and the windup-degree of determining described stern attachment also can comprise: select described stern attachment attachment location, size, attached angle and windup-degree the initial design value and simulate described flow, analyze thus the amount of institute's energy requirement; Design again attachment location, size, attached angle and the windup-degree of described stern attachment and simulate described flow based on analog result, analyze thus the amount of the energy that reduces; And from attachment location, size, attached angle and the windup-degree of described stern attachment design again and simulate the moulded dimension attachment of determining the described flow, determine full-scale stern attachment.
Disclosed technology can be reduced in the rotary current of wake of the propulsion unit that the operation of reason propulsion unit during the ship's navigation produces and the amount of power loss that causes in the present invention.
In addition, the present invention can realize when ship's navigation improving thus angle of rake cavitation erosion performance to the even velocity of flow that enters stream that is installed in the angle of rake blade surface in the stern.
Description of drawings
Following detailed description in conjunction with the drawings, above-mentioned and other purposes, feature and other advantages of the present invention will more clearly be understood, in the accompanying drawings:
Fig. 1 shows the block diagram according to the boats and ships of an embodiment of the invention;
Fig. 2 shows the stern of boats and ships shown in Figure 1 and the amplification stereogram of stern construction; And
Fig. 3 is the diagram of circuit of method that forms the stern construction with asymmetric mobile control fin that reverses of boats and ships as shown in Figure 1.
The specific embodiment
To illustrate in greater detail preferred implementation of the present invention now, the embodiment of preferred implementation is illustrated by accompanying drawing.
Be to describe the embodiment of structure of the present invention and/or function owing to only proposing the description of disclosed technology so that its purpose to be described, therefore should do not infer that the interest field of disclosed technology is limited by embodiment as herein described.That is to say, these embodiments can be made amendment in every way, and therefore it should be understood that the interest field of disclosed technology can comprise the equivalent that can implement technical spirit of the present invention.In addition, since the purpose that presents in conjunction with disclosed technology or advantage do not need the specific embodiment should realize the whole of these purposes and advantage or only one of them, should not infer that therefore the interest field of disclosed technology is by the purpose that presents and advantage restriction.
Simultaneously, the implication of term described herein should be explained as follows:
Term " first " and " second " only are used to an element and another element are distinguished, and the interest field of disclosed technology should not limited by these terms.For example, the first element can be designated as the second element, and the second element can be designated as the first element similarly.
When describing an element " connection " or " connection " to another element, this element can be connected directly or be connected to another element, but can have intermediary element between these two elements.On the other hand, when describing an element " directly connection " or " directly connection " to another element, be to be understood that between these two elements not have element.Simultaneously, describe the relation between these elements other statements (that is, " and ... between " and " be located immediately at ... between " or " being adjacent to ... " and " directly being adjacent to ... ") should be explained in an identical manner.
Should be understood that, singular references can comprise the plural number statement, as long as the content of these statements is obviously not different.In this application, " comprise " or the implication of " having " is intended to indicate attribute, quantification, step, process, element, parts and/or its combination, but not being intended to get rid of exists or is added with other attributes, quantification, step, process, element, parts and/or its combination.
The reference character (for example, a, b, c etc.) that relates to step is the order that is used and is not intended to describe for convenience of description step.If do not specifically describe particular order in context, then these steps can be with different occurring in sequence.That is to say, these steps can occur with particular order, can occur simultaneously, perhaps can be performed with the order of putting upside down.
If the employed whole terms of this paper are not differently limited, then these terms have the identical implication of term of usually understanding with disclosed technology those of ordinary skill in the field.It should be understood that the term that limits has the implication consistent with the implication of these terms in the correlation technique in universaling dictionary.If these terms are not limited in this application clearly, then these terms are not just analyzed as having formal implication ideally or excessively.
Fig. 1 shows the block diagram according to the boats and ships of an embodiment of the invention.Fig. 2 illustrates the stern of boats and ships shown in Figure 1 and the amplification stereogram of stern construction.
As depicted in figs. 1 and 2, boats and ships 100 have stern 110 and stern construction 120.
Stern 110 has propulsion unit 112 and rudder 114.Stern 110 is positioned at below the sea level when boats and ships 100 navigation, advances this boats and ships 100, and the control rotary current.In embodiments of the present invention, propulsion unit 112 can utilize propelling unit to implement.When boats and ships 100 navigation, propulsion unit 112 edges and the direction promotion seawater of the navigation opposite direction of boats and ships and the propulsive force of generation edge navigation direction.When producing propulsive force, because the rotation of propulsion unit 112 produces along the vortex rotary current of the hand of rotation of propulsion unit 112.This rotary current has unsymmetric structure based on the central axis of propulsion unit 112 in top, bottom, port side and starboard side, so that rotary current can cause a large amount of degradations of energy.
Stern construction 120 comprises a plurality of stern attachments 121,122,123,124 and cause the variation of the rotary current that is produced by propulsion unit 112, reduces thus the amount of power loss of generation when boats and ships 100 navigation.In one embodiment, can change spin intensity and flow velocity by a plurality of stern attachments 121 to 124, change thus the flow velocity that enters stream and fluid inlet angle to propulsion unit 11, the amount of power loss that occurs when being reduced in ship's navigation thus.
In order to weaken the rotating energy of the seawater that is produced by rotary current, at least a portion in a plurality of stern attachments 121 to 124 but non-ly all have different length and be attached at the diverse location place.At this and since rotary current usually on the quarter a plurality of positions around 110 produces along non-homogeneous direction with inhomogeneous size, therefore, the length of stern attachment 121 to 124 and attachment location can be considered on the quarter the rotary currents of generations around 110 and be determined.
In yet another embodiment of the present invention, stern attachment 121 to 124 can be constructed with identical or different length.
In addition, in this embodiment, each in a plurality of stern attachments 121 to 124 all is constructed with at least a structure in torsion structure and the unsymmetrical section structure, and described torsion structure reverses based on different rotation axiss.When rotary current flowed along torsion structure or unsymmetrical section structure, the above-mentioned structure of corresponding stern attachment can weaken or offset this rotary current, so that the direction of rotary current can be changed into the initial flow direction of seawater, reduces thus amount of power loss.
In one embodiment, a plurality of stern attachments 121 to 124 can have different length and can be attached at the diverse location place, and the torsion structure that can be constructed with the unsymmetrical section structure and reverse based on the different rotary axis.
Fig. 3 is the diagram of circuit of method that forms the stern construction with asymmetric mobile control fin that reverses of boats and ships shown in Figure 1.
As shown in Figure 3, before installation ship stern construction 120, the initial designs (S210) of preparation stern attachment 121 to 124.
Come the requirement (S220) of predict energy by navigable boats and ships 100 formed seawater streams (being called hereinafter, " fluid ") by simulation.At this, flow can comprise by a plurality of stern attachments 121 to 124 and the rotary current that formed by propulsion unit 112.
The improvement of the initial design (S210) of stern attachment 121 to 124 realizes by the attachment location, size, attached angle and the windup-degree that change stern attachment 121 to 124, determines that thus first improves design (S230).
Simulation improves the flow that design (S230) obtains by first of stern attachment 121 to 124, analyzes thus energy-saving effect (S240).
The analysis showed that first when improving design and being not suitable for this purpose when energy-conservation, determine that second of stern attachment 121 to 124 improved design (S230), and simulate second and improve the flow of design to analyze energy-saving effect (S240).The analysis showed that second when improving design and being not suitable for this purpose when energy-conservation, repeat said process (S250).
When determined by the above-mentioned repetitive process of wherein predicting and analyze the feature of the flow around the stern can the minimizes energy losses amount stern attachment 121 to 124 time, determine the full-scale shape (S260) of stern attachment 121 to 124.In one embodiment, full-scale fluid flow field simulation can utilize numerical analysis to carry out.
The full-scale stern attachment 121 to 124 of formation stern construction 120 is attached to boats and ships 100 and effectively reduces the amount of power loss of the rotary current generation that is produced by the rotation because of propulsion unit, forms thus energy-conservation boats and ships 100 (step 270).
Although for schematic purpose has been described preferred implementation of the present invention, but it will be understood by those skilled in the art that in the situation that do not depart from by disclosed scope and spirit of the present invention in the claims and can make various modifications, interpolation and replacement.
Claims (4)
1. a formation has the method for the stern construction of the asymmetric mobile control fin that reverses, and the method comprises:
Prepare a plurality of stern attachments;
The flow that is formed by navigable boats and ships is carried out modeling; And
Based on the described flow of institute's modeling, determine to reduce attachment location, size, attached angle and the windup-degree of described stern attachment of the amount of power loss of described boats and ships; Wherein
At least a portion in the described stern attachment but the non-diverse location place that all is attached at has different length, and have at least a structure in torsion structure and the unsymmetrical section structure, described torsion structure reverses based on different rotation axiss.
2. formation according to claim 1 has the method for the stern construction of the asymmetric mobile control fin that reverses, and wherein, described stern attachment has described torsion structure and described unsymmetrical section structure.
3. formation according to claim 1 has the method for the stern construction of the asymmetric mobile control fin that reverses, wherein
Described flow is carried out modeling also to be comprised:
Analyze energy-saving effect by the flow around the stern of simulating attached described stern attachment, propulsion unit and rudder.
4. formation according to claim 2 has the method for the stern construction of the asymmetric mobile control fin that reverses, wherein
Attachment location, size, attached angle and the windup-degree of determining described stern attachment also comprise:
Select described stern attachment attachment location, size, attached angle and windup-degree the initial design value and simulate described flow, analyze thus the amount of institute's energy requirement;
Design again attachment location, size, attached angle and the windup-degree of described stern attachment and simulate described flow based on analog result, analyze thus the amount of the energy that reduces; And
According to attachment location, size, attached angle and the windup-degree of described stern attachment design again and simulate the moulded dimension attachment of determining in the described flow, determine full-scale stern attachment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0083344 | 2011-08-22 | ||
| KR1020110083344A KR101365878B1 (en) | 2011-08-22 | 2011-08-22 | Forming method for stern structure of a ship attached with asymmetric twisted flow control fin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102951261A true CN102951261A (en) | 2013-03-06 |
Family
ID=47760772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100979342A Pending CN102951261A (en) | 2011-08-22 | 2012-04-05 | Forming method for stern structure of ship attached with asymmetric twisted flow control fin |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JP2013043633A (en) |
| KR (1) | KR101365878B1 (en) |
| CN (1) | CN102951261A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3316153A4 (en) * | 2015-06-23 | 2019-03-13 | Guangzhou Shipyard International Company Limited | Fairing method for asymmetric ship |
| CN114056483A (en) * | 2020-08-03 | 2022-02-18 | 秦皇岛耀华装备集团股份有限公司 | CM high-speed boat |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6548062B2 (en) * | 2014-05-23 | 2019-07-24 | 国立研究開発法人 海上・港湾・航空技術研究所 | Stern duct, stern attachment, method of designing stern duct, and ship equipped with stern duct |
| CN106184610B (en) * | 2016-07-11 | 2018-06-08 | 广州文冲船厂有限责任公司 | A kind of sternpost and tail fin installation method |
| CN111498049B (en) * | 2020-04-10 | 2021-12-21 | 中船澄西扬州船舶有限公司 | Mounting method of energy-saving stator |
| CN113859476B (en) * | 2021-11-10 | 2023-03-24 | 上海外高桥造船有限公司 | Energy-saving stator installation tool and construction process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2177365A (en) * | 1985-06-24 | 1987-01-21 | Schiffbau Veb K | Baffle arrangement for influencing propeller afflux in ships |
| DE4223570C1 (en) * | 1992-07-17 | 1993-09-16 | Herbert Prof. Dr.-Ing. 5100 Aachen De Schneekluth | Streamline control for variable pitch marine screw - has ring duct with smaller diameter than screw to reduce flow rate around hub and increase flow rate through propeller blades |
| CN1120505A (en) * | 1991-11-14 | 1996-04-17 | 三菱重工业株式会社 | Marine reaction fin arrangement |
| KR20030003918A (en) * | 2001-07-04 | 2003-01-14 | 대우조선해양 주식회사 | Asymmetric preswirl stator |
| KR20090054046A (en) * | 2007-11-26 | 2009-05-29 | 삼성중공업 주식회사 | Pre-swirl stator improving ability to maneuver in vessel |
| CN101531246A (en) * | 2008-03-10 | 2009-09-16 | 贝克船舶系统有限及两合公司 | Device for reducing the power demand for the propulsion of a ship |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3668884B2 (en) * | 1999-11-18 | 2005-07-06 | ユニバーサル造船株式会社 | Energy saving-ship |
| JP5002378B2 (en) * | 2007-09-03 | 2012-08-15 | 日本郵船株式会社 | Marine propulsion efficiency improvement device and its construction method |
| KR20100103982A (en) * | 2009-03-16 | 2010-09-29 | 대우조선해양 주식회사 | Pre-swirl stator of ship |
| JP5281559B2 (en) * | 2009-12-14 | 2013-09-04 | 三菱重工業株式会社 | Ship propulsion performance improvement device |
-
2011
- 2011-08-22 KR KR1020110083344A patent/KR101365878B1/en not_active IP Right Cessation
-
2012
- 2012-03-06 JP JP2012049780A patent/JP2013043633A/en active Pending
- 2012-03-19 JP JP2012061595A patent/JP2013043634A/en active Pending
- 2012-04-05 CN CN2012100979342A patent/CN102951261A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2177365A (en) * | 1985-06-24 | 1987-01-21 | Schiffbau Veb K | Baffle arrangement for influencing propeller afflux in ships |
| CN1120505A (en) * | 1991-11-14 | 1996-04-17 | 三菱重工业株式会社 | Marine reaction fin arrangement |
| DE4223570C1 (en) * | 1992-07-17 | 1993-09-16 | Herbert Prof. Dr.-Ing. 5100 Aachen De Schneekluth | Streamline control for variable pitch marine screw - has ring duct with smaller diameter than screw to reduce flow rate around hub and increase flow rate through propeller blades |
| KR20030003918A (en) * | 2001-07-04 | 2003-01-14 | 대우조선해양 주식회사 | Asymmetric preswirl stator |
| KR20090054046A (en) * | 2007-11-26 | 2009-05-29 | 삼성중공업 주식회사 | Pre-swirl stator improving ability to maneuver in vessel |
| CN101531246A (en) * | 2008-03-10 | 2009-09-16 | 贝克船舶系统有限及两合公司 | Device for reducing the power demand for the propulsion of a ship |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3316153A4 (en) * | 2015-06-23 | 2019-03-13 | Guangzhou Shipyard International Company Limited | Fairing method for asymmetric ship |
| CN114056483A (en) * | 2020-08-03 | 2022-02-18 | 秦皇岛耀华装备集团股份有限公司 | CM high-speed boat |
| CN114056483B (en) * | 2020-08-03 | 2023-09-08 | 秦皇岛耀华装备集团股份有限公司 | Fiber reinforced composite material high-speed boat |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013043634A (en) | 2013-03-04 |
| KR101365878B1 (en) | 2014-02-24 |
| KR20130021056A (en) | 2013-03-05 |
| JP2013043633A (en) | 2013-03-04 |
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Application publication date: 20130306 |