CN110126975A - A method of forming ventilated supercavitation - Google Patents
A method of forming ventilated supercavitation Download PDFInfo
- Publication number
- CN110126975A CN110126975A CN201910403583.5A CN201910403583A CN110126975A CN 110126975 A CN110126975 A CN 110126975A CN 201910403583 A CN201910403583 A CN 201910403583A CN 110126975 A CN110126975 A CN 110126975A
- Authority
- CN
- China
- Prior art keywords
- coating
- supercavity
- supercavitation
- ventilated supercavitation
- smear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- B63B2001/382—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes by making use of supercavitation, e.g. for underwater vehicles
-
- 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
-
- 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
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of methods for forming ventilated supercavitation, smear a coating on sail body surface, which can react with water releases gas；Coating is metallic sodium, CaO2, ammonium salt or carbonate, and smearing thickness is 4~7mm.The present invention propose it is a kind of effectively help supercavity to be formed and lasting method, body show to smear it is a kind of can type discharge goes out gas in wet condition coating increase supercavity to increase the pressure in vacuole, the duration is longer, is conducive to drag-reduction effect.
Description
Technical field
The present invention relates to supercavity drag reduction technologies, and in particular to a method of form ventilated supercavitation.
Background technique
In recent years, supercavity drag reduction technology gradually develops, a far-reaching technology is brought to remove from office to underwater sailing body
Life, or even change the mode of the following navy fight.The density for reducing sail body surrounding fluid medium is the basic of supercavity drag reduction
Principle.
Ventilated supercavitation technology increases the vacuole area on sail body surface, develops into supercavity, to realize underwater boat
Greatly improving for row body route speed is laid a good foundation.The approach for generating supercavity is broadly divided into three kinds, carrys out flow velocity first is that increasing
Degree, second is that reducing incoming-flow pressure, third is that increasing the pressure in vacuole.
Artificial ventilation's supercavity mostly uses gas jet method and fluid jet process, cavitation device method, gas at this stage
Body jetting method is as shown in Figure 1.Above-mentioned three kinds of methods are more demanding to aircraft internal structure, it is desirable that can be to head inside it
Sustained firing gas or liquid can only be completed under higher experiment condition under normal circumstances, is difficult to apply among engineering field.
Summary of the invention
The purpose of the present invention is to provide a kind of method for forming ventilated supercavitation, the supercavity for improving sail body movement subtracts
Hinder effect.
The technical solution for realizing the aim of the invention is as follows: a method of ventilated supercavitation being formed, on sail body surface
A coating is smeared, which can react with water releases gas.
Compared with prior art, remarkable advantage of the invention are as follows: the present invention shows to smear one kind in body can be in humidity
Type discharge goes out the coating of gas under environment, to increase the pressure in vacuole, increases supercavity, the duration is longer, is conducive to
Drag-reduction effect.
Detailed description of the invention
Fig. 1 is that artificial ventilated supercavitation tests schematic diagram.
Fig. 2 is present invention repacking design diagram.
Specific embodiment
As shown in Fig. 2, a kind of method for forming ventilated supercavitation, smears a coating, the coating energy on sail body surface
Releasing gas is enough reacted with water increases supercavity to increase the pressure in vacuole, and the duration is longer, is conducive to drag reduction effect
Fruit.
The coating is metallic sodium, CaO2, ammonium salt or carbonate.Coating, which requires to react with water, generates gas, the change
Excessive corrosion or other damages cannot be caused to sail body outer surface by learning reaction.
The smearing thickness of the coating is 4~7mm, is smeared uniformly, sail body tail portion can not daub.
The following describes the present invention in detail with reference to examples.
Embodiment
For the supercavity drag-reduction effect for improving sail body movement, the present invention proposes that a kind of effectively help supercavity is formed and held
Continuous method, on the basis of the smearing anticorrosive coating of sail body surface:
Sail body surface smear it is a kind of can go out the coating of gas by type discharge in wet condition, the main material of coating is adopted
With: active metal: metallic sodium etc.；Peroxide: CaO2Deng；The strong ammonium salt of hydrolysis ability；The strong carbonate of hydrolysis ability.This reality
Apply example doping and with CaO2For the coating of primary raw material, oxonium ion is negative one valence in calper calcium peroxide, and ionic nature is especially unstable.
It meets water and understands itself generation redox reaction: 2Ca02+2H20=02+2CA(OH)2。
The sail body of design is remain stationary under experimental conditions, and incoming flow is allowed to pass through, and carries out experimental verification to design method.
Claims (4)
1. a kind of method for forming ventilated supercavitation, which is characterized in that smear a coating on sail body surface, which can
It is reacted with water and releases gas.
2. it is according to claim 1 formed ventilated supercavitation method, which is characterized in that the coating be metallic sodium,
CaO2, ammonium salt or carbonate.
3. the method according to claim 1 for forming ventilated supercavitation, which is characterized in that the smearing thickness of the coating is
4~7mm.
4. the method according to claim 3 for improving ventilated supercavitation, which is characterized in that sail body tail portion does not apply trowelling
Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403583.5A CN110126975A (en) | 2019-05-15 | 2019-05-15 | A method of forming ventilated supercavitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403583.5A CN110126975A (en) | 2019-05-15 | 2019-05-15 | A method of forming ventilated supercavitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110126975A true CN110126975A (en) | 2019-08-16 |
Family
ID=67574502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910403583.5A Pending CN110126975A (en) | 2019-05-15 | 2019-05-15 | A method of forming ventilated supercavitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110126975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113650721A (en) * | 2020-12-02 | 2021-11-16 | 中国科学院理化技术研究所 | Universal cylinder surface cavity bubble air film forming, regulating and controlling and drag reducing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000289685A (en) * | 1999-04-13 | 2000-10-17 | Ishikawajima Harima Heavy Ind Co Ltd | Frictional resistance reducing ship |
| CN1792708A (en) * | 2005-12-23 | 2006-06-28 | 上海大学 | Method and apparatus for raising navigational speed by chemical reaction to producing bubble of underwater high speed navigating body |
| CN202754141U (en) * | 2012-05-21 | 2013-02-27 | 福州爱莱格游艇工业有限公司 | Novel rudder blade of yacht |
| CN104854204A (en) * | 2012-11-30 | 2015-08-19 | 中国涂料株式会社 | Coating composition for use in ship with reduced friction drag utilizing gas-lubricating function in water, coating film formed from said composition, ship coated with said coating film, method for manufacturing said ship, method for predicting said friction drag reduction effect, device used for prediction of said friction drag reduction effect, and friction drag reduction system for use in said ship with reduced friction drag |
| CN105547056A (en) * | 2015-12-04 | 2016-05-04 | 哈尔滨工程大学 | Resistance reduction-propulsion integrated structure of manually-ventilated supercavitating torpedo |
| CN108180792A (en) * | 2017-12-29 | 2018-06-19 | 南京理工大学 | Supercavitating Projectile about granule surface contral drag reduction |
| CN109131721A (en) * | 2018-09-29 | 2019-01-04 | 南京理工大学 | Powder charge type vacuole recurring structure for supercavity underwater sailing body |
-
2019
- 2019-05-15 CN CN201910403583.5A patent/CN110126975A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000289685A (en) * | 1999-04-13 | 2000-10-17 | Ishikawajima Harima Heavy Ind Co Ltd | Frictional resistance reducing ship |
| CN1792708A (en) * | 2005-12-23 | 2006-06-28 | 上海大学 | Method and apparatus for raising navigational speed by chemical reaction to producing bubble of underwater high speed navigating body |
| CN202754141U (en) * | 2012-05-21 | 2013-02-27 | 福州爱莱格游艇工业有限公司 | Novel rudder blade of yacht |
| CN104854204A (en) * | 2012-11-30 | 2015-08-19 | 中国涂料株式会社 | Coating composition for use in ship with reduced friction drag utilizing gas-lubricating function in water, coating film formed from said composition, ship coated with said coating film, method for manufacturing said ship, method for predicting said friction drag reduction effect, device used for prediction of said friction drag reduction effect, and friction drag reduction system for use in said ship with reduced friction drag |
| CN105547056A (en) * | 2015-12-04 | 2016-05-04 | 哈尔滨工程大学 | Resistance reduction-propulsion integrated structure of manually-ventilated supercavitating torpedo |
| CN108180792A (en) * | 2017-12-29 | 2018-06-19 | 南京理工大学 | Supercavitating Projectile about granule surface contral drag reduction |
| CN109131721A (en) * | 2018-09-29 | 2019-01-04 | 南京理工大学 | Powder charge type vacuole recurring structure for supercavity underwater sailing body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113650721A (en) * | 2020-12-02 | 2021-11-16 | 中国科学院理化技术研究所 | Universal cylinder surface cavity bubble air film forming, regulating and controlling and drag reducing method |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190816 |