CN107719579A - A kind of design method of conical cavitation device - Google Patents
A kind of design method of conical cavitation device Download PDFInfo
- Publication number
- CN107719579A CN107719579A CN201710898973.5A CN201710898973A CN107719579A CN 107719579 A CN107719579 A CN 107719579A CN 201710898973 A CN201710898973 A CN 201710898973A CN 107719579 A CN107719579 A CN 107719579A
- Authority
- CN
- China
- Prior art keywords
- mrow
- cavitation device
- conical
- msup
- msub
- 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
Links
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
- B63B71/00—Designing vessels; Predicting their performance
-
- 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
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a kind of design method of conical cavitation device, it is known that ROV diameter D, go out conical cavitation device cone apex angle α according to equationsZ, cone basal diameter DZ, cone height HZ, cylinder height HY, cylinder section diameter DY.The present invention gives the method for accurately designing of the Different structural parameters of conical cavitation device, also solve thes problems, such as that underwater sailing body resistance in water is big, the speed of a ship or plane is relatively low, and avoid the economic loss that sail body surface local cavitation is brought.
Description
Technical field
The present invention relates to the cavitation device field of submarine navigation device, more particularly to a kind of design method of conical cavitation device.
Background technology
For the principal character of cavitation processes, Knapp is so to describe：When the pressure in liquid is at a constant temperature due to certain
Reason reduces, and has then reached certain state, and now the hole of vapour cavity or gassy or steam starts to occur and given birth to
Long, the growth in vacuole or hole is volatile, and this process is referred to as cavitation.Cavitation phenomenon is on human lives and engineer applied
A kind of recurrent physical phenomenon, it can be divided into according to object and cavitation condition during liquid relative motion：Non- cavitation condition, face
Boundary's cavitation condition, local cavitation state and supercavitation state.
Submarine navigation device be it is a kind of navigate by water in underwater sail body, it is even military that it can complete underwater exploration, detecting
On attack defence etc. task.Current ocean development becomes more and more important, and submarine navigation device increasingly obtains the attention of each state no matter
It is civilian or use in army, all plays important role.The speed of a ship or plane of underwater sailing body is relatively low always for a long time, reason
Have：Ship resistance is big；If improving the speed of a ship or plane, sail body surface local pressure is down to the saturated vapour pressure of water, cavitation phenomenon, band occurs
To vibrate, noise and the adverse consequences such as degrade, cause unpredicted economic loss.Russian researchers carry through studying for a long period of time
Go out to reduce using supercavity the resistance of underwater sailing body, underwater sailing body is included in huge vacuole substantially so that sail body
Near surface liquid medium is changed into gas, because air drag is much smaller than liquid resistance, so as to reduce sail body stroke resistance,
And avoid the harmful effect that cavitation is brought.Now in cavitation device of the sail body head installation with expansion acute angle profile, shape
It is more conventional artificial ventilation's supercavity generation method into the cavity of parcel sail body, smooth vacuole is stablized in easily generation
Surface.
Patent publication No. is that the Chinese invention patent of " A of CN 104590481 " number discloses " combined type cavitation device ", at this
In patent of invention, inventor provides a kind of combined type cavitation device, and it includes conical sections and frustum-conical portion, and leading portion is circular cone
Body portion, back segment are the structure design of frustum-conical portion.Patent publication No. is that the Chinese invention of " A of CN 105352704 " number is special
Profit discloses " a kind of circular cone cavitation device of variable cone angle ", and in the patent of invention, inventor provides cavitation device and is arranged on navigation
The head of body, including the construction design method of a fixed disc and multiple sliding discs.But they do not provide cavitation device
Specific design method of the relevant parameter on different sail body diameters.
The content of the invention
For Shortcomings in the prior art, the invention provides a kind of design method of conical cavitation device, by changing
It is apt to the important parameter design method of conical cavitation device, effectively realizes the running resistance for reducing sail body, noise reduction, improves underwater boat
The row body speed of a ship or plane.
The present invention is to realize above-mentioned technical purpose by following technological means.
A kind of design method of conical cavitation device, conical cavitation device cone apex angle αZFor：
Wherein：
αZ- conical cavitation device cone drift angle, unit：Degree；
DZ- conical cavitation device cone basal diameter, unit：mm；Formula is：
DZ=0.277D1.04
HZ- conical cavitation device cone height, unit：mm；Formula is：
D-ROV diameter, unit：mm.
Further, the conical cavitation device cylinder section diameter DYFor：
Wherein：
DY- cylinder section diameter, unit：mm；
HZ- conical cavitation device cone height, unit：mm.
Further, the conical cavitation device cylinder height HyFor：
HY=1.314DY 1.005
Wherein：
HY- conical cavitation device cylinder height, unit：mm；
DY- cylinder section diameter, unit：mm.
The beneficial effects of the present invention are：
1. the design method of conical cavitation device of the present invention, not only give the different structure of conical cavitation device
The method for accurately designing of parameter, also solve the problems, such as that underwater sailing body resistance in water is big, the speed of a ship or plane is relatively low, and avoid
The economic loss that sail body surface local cavitation is brought.
Brief description of the drawings
Fig. 1 is conical cavitation device profile of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
Not limited to this.
As shown in figure 1, a kind of design method of conical cavitation device, according to known ROV diameter D, then cone is empty
Change device cone apex angle αZFor：
Wherein：
αZ- conical cavitation device cone drift angle, unit：Degree；
DZ- conical cavitation device cone basal diameter, unit：mm；Formula is：
DZ=0.277D1.04
HZ- conical cavitation device cone height, unit：mm；Formula is：
D-ROV diameter, unit：mm.
Further, the conical cavitation device cylinder section diameter DYFor：
Wherein：
DY- cylinder section diameter, unit：mm；
HZ- conical cavitation device cone height, unit：mm.
Further, the conical cavitation device cylinder height HyFor：
HY=1.314DY 1.005
Wherein：
HY- conical cavitation device cylinder height, unit：mm；
DY- cylinder section diameter, unit：mm.
The present invention calculates conical cavitation device the Hydraulic Design using exact formulas design method so that underwater sailing body is super empty
Navigated by water in bubble, effectively realize the running resistance for reducing sail body, reach noise reduction, improve the underwater sailing body speed of a ship or plane.
The embodiment is preferred embodiment of the invention, but the present invention is not limited to above-mentioned embodiment, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification belongs to protection scope of the present invention.
Claims (3)
- A kind of 1. design method of conical cavitation device, it is characterised in that conical cavitation device cone apex angle αZFor：<mrow> <msub> <mi>&alpha;</mi> <mi>Z</mi> </msub> <mo>=</mo> <mn>2</mn> <mi>a</mi> <mi>r</mi> <mi>c</mi> <mi>t</mi> <mi>a</mi> <mi>n</mi> <mfrac> <msub> <mi>D</mi> <mi>Z</mi> </msub> <mrow> <mn>2</mn> <msub> <mi>H</mi> <mi>Z</mi> </msub> </mrow> </mfrac> <mo>=</mo> <mn>2</mn> <mi>a</mi> <mi>r</mi> <mi>c</mi> <mi>t</mi> <mi>a</mi> <mi>n</mi> <mfrac> <mrow> <mn>0.277</mn> <msup> <mi>D</mi> <mn>1.04</mn> </msup> </mrow> <mrow> <mn>2</mn> <mo>&times;</mo> <mn>258.5</mn> <msup> <mi>e</mi> <mrow> <mo>&lsqb;</mo> <mo>-</mo> <msup> <mrow> <mo>(</mo> <mfrac> <mrow> <mi>D</mi> <mo>-</mo> <mn>875.3</mn> </mrow> <mn>565</mn> </mfrac> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>&rsqb;</mo> </mrow> </msup> </mrow> </mfrac> </mrow>Wherein：αZ- conical cavitation device cone drift angle, unit：Degree；DZ- conical cavitation device cone basal diameter, unit：mm；Formula is：DZ=0.277D1.04HZ- conical cavitation device cone height, unit：mm；Formula is：<mrow> <msub> <mi>H</mi> <mi>Z</mi> </msub> <mo>=</mo> <mn>258.5</mn> <msup> <mi>e</mi> <mrow> <mo>&lsqb;</mo> <mo>-</mo> <msup> <mrow> <mo>(</mo> <mfrac> <mrow> <mi>D</mi> <mo>-</mo> <mn>875.3</mn> </mrow> <mn>565</mn> </mfrac> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>&rsqb;</mo> </mrow> </msup> </mrow>D-ROV diameter, unit：mm.
- 2. the design method of conical cavitation device according to claim 1, it is characterised in that the conical cavitation device circle Pole section diameter DYFor：<mrow> <msub> <mi>D</mi> <mi>Y</mi> </msub> <mo>=</mo> <mn>95.81</mn> <msup> <mi>e</mi> <mrow> <mo>&lsqb;</mo> <mo>-</mo> <msup> <mrow> <mo>(</mo> <mfrac> <mrow> <msub> <mi>H</mi> <mi>Z</mi> </msub> <mo>-</mo> <mn>249.2</mn> </mrow> <mn>155.7</mn> </mfrac> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>&rsqb;</mo> </mrow> </msup> </mrow>Wherein：DY- cylinder section diameter, unit：mm；HZ- conical cavitation device cone height, unit：mm.
- 3. the design method of conical cavitation device according to claim 2, it is characterised in that the conical cavitation device circle Height of column HyFor：HY=1.314DY 1.005Wherein：HY- conical cavitation device cylinder height, unit：mm；DY- cylinder section diameter, unit：mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898973.5A CN107719579A (en) | 2017-09-28 | 2017-09-28 | A kind of design method of conical cavitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898973.5A CN107719579A (en) | 2017-09-28 | 2017-09-28 | A kind of design method of conical cavitation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107719579A true CN107719579A (en) | 2018-02-23 |
Family
ID=61208313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710898973.5A Pending CN107719579A (en) | 2017-09-28 | 2017-09-28 | A kind of design method of conical cavitation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107719579A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143254A (en) * | 2019-05-15 | 2019-08-20 | 南京理工大学 | A kind of supercavity generating means |
| CN110758695A (en) * | 2019-11-27 | 2020-02-07 | 中国人民解放军国防科技大学 | Self-adaptive continuously adjustable cavitator structure |
| CN111301604A (en) * | 2020-04-07 | 2020-06-19 | 西北工业大学 | Underwater cavitation load reduction rod structure for underwater vehicle throwing |
| CN115214840A (en) * | 2022-07-19 | 2022-10-21 | 哈尔滨工业大学 | Cavitation head type design method suitable for high-speed water entering and load shedding of navigation body |
-
2017
- 2017-09-28 CN CN201710898973.5A patent/CN107719579A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143254A (en) * | 2019-05-15 | 2019-08-20 | 南京理工大学 | A kind of supercavity generating means |
| CN110758695A (en) * | 2019-11-27 | 2020-02-07 | 中国人民解放军国防科技大学 | Self-adaptive continuously adjustable cavitator structure |
| CN110758695B (en) * | 2019-11-27 | 2020-09-18 | 中国人民解放军国防科技大学 | Self-adaptive continuously adjustable cavitator structure |
| CN111301604A (en) * | 2020-04-07 | 2020-06-19 | 西北工业大学 | Underwater cavitation load reduction rod structure for underwater vehicle throwing |
| CN111301604B (en) * | 2020-04-07 | 2022-03-15 | 西北工业大学 | Underwater cavitation load reduction rod structure for underwater vehicle throwing |
| CN115214840A (en) * | 2022-07-19 | 2022-10-21 | 哈尔滨工业大学 | Cavitation head type design method suitable for high-speed water entering and load shedding of navigation body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107719579A (en) | A kind of design method of conical cavitation device | |
| CN110053705B (en) | Multi-section ventilation and resistance reduction method and device applied to high-speed surface boat | |
| Wu | Hydromechanics of swimming propulsion. Part 3. Swimming and optimum movements of slender fish with side fins | |
| CN107310687B (en) | A kind of resistance self-adapting changeable structure cavitation device | |
| CN107738725B (en) | A kind of supercavity submarine navigation device | |
| Xu et al. | On wake vortex encounter of axial-symmetric projectiles launched successively underwater | |
| CN106709135B (en) | Three-body ship type sheet body layout optimization design method based on viscous wave flow field analysis | |
| CN104573226A (en) | Propeller thrust modeling method for underwater vehicle | |
| CN105015698B (en) | A kind of damping device for inside drill ship moon pool | |
| Ma et al. | Effect of pressure-equalizing film on hydrodynamic characteristics and trajectory stability of an underwater vehicle with injection through one or two rows of venting holes | |
| Chen et al. | Hydrodynamic analyses of typical underwater gliders | |
| Chen et al. | A study on the cavitating flow around an elliptical disk-shaped cavitator for non-body-of-revolution underwater vehicles | |
| Lin et al. | Improvement of hydrodynamic performance of the disk-shaped autonomous underwater helicopter by local shape modification | |
| Lu et al. | Research on the interference characteristics of successively launched underwater projectiles | |
| Sun et al. | Cavity dynamics of water entry for a head-ventilated cylinder | |
| CN203534869U (en) | Floating type layering water sampler | |
| CN104443249A (en) | Hull bottom structure suitable for reducing hull resistance | |
| KR20130055996A (en) | Streamlined form protuberance for ships to reduce wave making resistance around bow | |
| CN208306918U (en) | A kind of maritime mouth of gravity flow of novel trapezoidal variable cross-section | |
| CN105197179A (en) | Vertical bow and front edge drainage combined damping structure used for low speed full formed ship | |
| CN201383282Y (en) | Novel drag reduction model | |
| CN205220980U (en) | A perpendicular bow and leading edge drainage combination drag reduction structure that is used for loose ship type of low -speed | |
| CN109050783A (en) | A kind of disturbing flow device and spoiler of autonomous disturbance triggering Transitional And Turbulent Flow | |
| CN205891158U (en) | Novel underwater vehicle with rhombus wing | |
| WO2008033045A1 (en) | Friction reducing surface and a mass and heat transfer enhancing surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Application publication date: 20180223 |
|
| RJ01 | Rejection of invention patent application after publication |