CN110203323A - A kind of high speed operation device of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology - Google Patents
A kind of high speed operation device of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology Download PDFInfo
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- CN110203323A CN110203323A CN201910444077.0A CN201910444077A CN110203323A CN 110203323 A CN110203323 A CN 110203323A CN 201910444077 A CN201910444077 A CN 201910444077A CN 110203323 A CN110203323 A CN 110203323A
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- groove
- high speed
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- speed operation
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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
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
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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
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
- B63B2001/387—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes using means for producing a film of air or air bubbles over at least a significant portion of the hull surface
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- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Tires In General (AREA)
Abstract
The present invention relates to the high speed operation devices of a kind of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology, the hull bottom face of the high speed operation device is along captain to offering several grooves being parallel to each other, the cross section of the groove is rectangular, U-shaped or V-arrangement, and the groove height hc of the groove is equal to groove width W；The high speed operation device further includes the micro bubble generation device being set in cabin, and the micro bubble generation device generates bubble and is delivered to hull bottom by tracheae, and the tracheae is layed in the trench interiors, and uniformly opens up gas vent along the trench length direction.The present invention is by alow designing groove, by changing the fluidal texture of boundary layer bottom to reach drag reduction purpose, gas vent is set in the trench simultaneously, bubble discharge generates the thin air curtain of disperse in flute surfaces, resistance can be further decreased, it can achieve joint drag-reduction effect by effective combine of two kinds of drag reduction technologies, drag reduction efficiency improved, to improve ship resistance and performance.
Description
Technical field
The present invention relates to aircraft drag reduction design fields, and in particular to a kind of combination Friction Reduction by Micro-bubbles technology and groove
The high speed operation device of face turbulent flow drag reduction technology.
Background technique
Friction Reduction by Micro-bubbles can be described as gas-bearing formation, air pocket drag reduction again, be in body surface manufacture bubble to reach reducing noise and drag
Effect releases air by the aperture on the air pipe line that aircraft is laid with, generates the very thin air curtain of disperse, the air curtain
The frictional resistance between shell and water can be effectively reduced and the radiation of hull noise source Xiang Shuizhong is isolated, to reach
The purpose of reducing noise and drag.Its principle is to adjust bottom fluidal texture using the small frictional resistance and easily-deformable feature of bubble to subtract
Few resistance.
Grooved surface turbulent flow drag reduction is alternatively referred to as stripe groove surface drag reduction technology, is to open a series of transverse directions on a surface of an
Or the groove of flow direction, by the fluidal texture of change boundary layer bottom to reach drag reduction purpose, this method belongs to surface modification skill
Art is applied to aircraft or ship domain, can reduce energy consumption.
Above two technology single can generate drag-reduction effect to aircraft, but at present still not by two kinds of technologies
The design being combined is to reach better drag-reduction effect.
Summary of the invention
The technical problem to be solved in the present invention is that rapid for above-mentioned Friction Reduction by Micro-bubbles of the existing technology and grooved surface
The vacancy that stream drag reduction technology combines, provides the high-speed aircraft of a kind of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology
Row device, its structure design combine Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology, keep its drag-reduction effect significantly excellent
The effect acquired by single drag reduction technology.
The present invention is technical solution used by solving technical problem set forth above are as follows:
A kind of high speed operation device of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology, the high speed operation device
Hull bottom face along captain to several grooves being parallel to each other are offered, the cross section of the groove is rectangular, U-shaped or V-arrangement, institute
The groove height hc for stating groove is equal to groove width W, the range of groove width W are as follows: 25 μm≤W≤300 μm；The high-speed aircraft
Row device further includes the micro bubble generation device being set in cabin, and the micro bubble generation device generation bubble is simultaneously defeated by tracheae
Send to hull bottom, the tracheae is layed in the trench interiors, and uniformly opens up gas vent along the trench length direction, bubble from
It is discharged in the gas vent.
In above scheme, the cross section of the groove uses V-arrangement.
In above scheme, the groove is opened in 1/3 captain between 2/3 captain along captain direction.
The beneficial effects of the present invention are:
1, the present invention is by alow designing groove, by changing the fluidal texture of boundary layer bottom to reach drag reduction mesh
, while gas vent is set in the trench, bubble discharge generates the thin air curtain of disperse in flute surfaces, can further decrease resistance
Power can achieve joint drag-reduction effect by effective combine of two kinds of drag reduction technologies, drag reduction efficiency be improved, so that it is fast to improve ship
Speed.
2, the preferred V-arrangement in the cross section of groove of the invention retains convenient for bubble in flute surfaces, improves drag reduction efficiency, together
When reduce micro bubble generation device energy consumption.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural schematic diagram of high speed operation device of the present invention；
Fig. 2 is that aircraft bottom of the present invention opens up groove structure schematic diagram.
In figure: 10, groove；20, gas vent；30, hull.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
As shown in Figure 1, being a preferred embodiment of the present invention in conjunction with Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction skill
The high speed operation device of art, 30 bottom surface of hull of high speed operation device is along captain to offering several grooves being parallel to each other 10, ditch
The cross section of slot 10 is rectangular, U-shaped or V-arrangement, and the groove height hc of groove 10 is equal to groove width W, the range of groove width W
Are as follows: 25 μm≤W≤300 μm.High speed operation device further includes the micro bubble generation device being set in cabin, micro bubble generation device
It generates bubble and hull bottom is delivered to by tracheae, tracheae is layed in inside groove 10, and is uniformly opened up along 10 length direction of groove
Gas vent 20, bubble are discharged from each gas vent 20.
The present invention is by alow designing groove 10, by changing the fluidal texture of boundary layer bottom to reach drag reduction mesh
, while gas vent 20 is set in groove 10, bubble discharge generates the thin air curtain of disperse on 10 surface of groove, can be further
Reduce resistance, joint drag-reduction effect can achieve by effective combine of two kinds of drag reduction technologies, drag reduction efficiency is improved, to improve
Ship resistance and performance.
Preferably, the cross section of groove 10 uses V-arrangement, retains convenient for bubble on 10 surface of groove, improves drag reduction efficiency, together
When reduce micro bubble generation device energy consumption.
Preferably, groove 10 is opened in 1/3 captain between 2/3 captain along captain direction, and tracheae is along 10 length side of groove
To being paved with, to increase the active area of bubble as far as possible, resistance is further decreased.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (3)
1. the high speed operation device of a kind of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology, it is characterised in that: described
The hull bottom face of high speed operation device is rectangular, U to several grooves being parallel to each other, the cross section of the groove is offered along captain
The groove height hc of shape or V-arrangement, the groove is equal to groove width W, the range of groove width W are as follows: 25 μm≤W≤300 μm；
The high speed operation device further includes the micro bubble generation device being set in cabin, and the micro bubble generation device generates gas
It steeps and passes through tracheae and be delivered to hull bottom, the tracheae is layed in the trench interiors, and uniformly opens along the trench length direction
If gas vent, bubble is discharged from the gas vent.
2. the high speed operation device of combination Friction Reduction by Micro-bubbles technology according to claim 1 and grooved surface turbulent flow drag reduction technology,
It is characterized in that, the cross section of the groove uses V-arrangement.
3. the high speed operation device of combination Friction Reduction by Micro-bubbles technology according to claim 1 and grooved surface turbulent flow drag reduction technology,
It is characterized in that, the groove is opened in 1/3 captain between 2/3 captain along captain direction, the tracheae is along trench length side
To being paved with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444077.0A CN110203323A (en) | 2019-05-27 | 2019-05-27 | A kind of high speed operation device of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444077.0A CN110203323A (en) | 2019-05-27 | 2019-05-27 | A kind of high speed operation device of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology |
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| CN110203323A true CN110203323A (en) | 2019-09-06 |
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| CN201910444077.0A Pending CN110203323A (en) | 2019-05-27 | 2019-05-27 | A kind of high speed operation device of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752148A (en) * | 2020-06-03 | 2020-10-09 | 武汉理工大学 | Self-adaptive controller and method applied to ship waste gas utilization system |
| CN113212637A (en) * | 2021-06-20 | 2021-08-06 | 西北工业大学 | Ship resistance reducing device |
| CN113479287A (en) * | 2021-07-29 | 2021-10-08 | 西北工业大学 | Drag reduction film for ship |
| CN113833719A (en) * | 2021-09-15 | 2021-12-24 | 南京理工大学 | Electromagnetic-groove composite damping device for marine navigation body |
| CN114034464A (en) * | 2021-10-28 | 2022-02-11 | 中国舰船研究设计中心 | Verification test system for real-scale cabin air curtain noise reduction technology |
| CN114932973A (en) * | 2022-06-01 | 2022-08-23 | 吉林大学 | Variable groove device of underwater vehicle |
| CN116588239A (en) * | 2023-06-29 | 2023-08-15 | 中国船舶集团有限公司第七一九研究所 | Surface microstructure with drag reduction function of underwater vehicle and forming method thereof |
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| US8800464B1 (en) * | 2007-03-05 | 2014-08-12 | Michael Paul Peters | Stabilized step hull utilizing a ventilated tunnel |
| CN204623753U (en) * | 2015-05-26 | 2015-09-09 | 浙江海洋学院 | A kind of drag reduction force mechanisms of boats and ships |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752148A (en) * | 2020-06-03 | 2020-10-09 | 武汉理工大学 | Self-adaptive controller and method applied to ship waste gas utilization system |
| CN111752148B (en) * | 2020-06-03 | 2022-04-15 | 武汉理工大学 | Self-adaptive controller and method applied to ship waste gas utilization system |
| CN113212637A (en) * | 2021-06-20 | 2021-08-06 | 西北工业大学 | Ship resistance reducing device |
| CN113212637B (en) * | 2021-06-20 | 2023-10-27 | 西北工业大学 | Ship drag reduction device |
| CN113479287A (en) * | 2021-07-29 | 2021-10-08 | 西北工业大学 | Drag reduction film for ship |
| CN113833719A (en) * | 2021-09-15 | 2021-12-24 | 南京理工大学 | Electromagnetic-groove composite damping device for marine navigation body |
| CN114034464A (en) * | 2021-10-28 | 2022-02-11 | 中国舰船研究设计中心 | Verification test system for real-scale cabin air curtain noise reduction technology |
| CN114034464B (en) * | 2021-10-28 | 2024-05-10 | 中国舰船研究设计中心 | Verification test system for real-scale cabin air curtain noise reduction technology |
| CN114932973A (en) * | 2022-06-01 | 2022-08-23 | 吉林大学 | Variable groove device of underwater vehicle |
| CN114932973B (en) * | 2022-06-01 | 2024-01-30 | 吉林大学 | Variable groove device of underwater vehicle |
| CN116588239A (en) * | 2023-06-29 | 2023-08-15 | 中国船舶集团有限公司第七一九研究所 | Surface microstructure with drag reduction function of underwater vehicle and forming method thereof |
| CN116588239B (en) * | 2023-06-29 | 2023-12-08 | 中国船舶集团有限公司第七一九研究所 | Surface microstructure with drag reduction function of underwater vehicle and forming method thereof |
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Application publication date: 20190906 |