CN100504081C - Rib strip-tiny bubble damping device - Google Patents
Rib strip-tiny bubble damping device Download PDFInfo
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- CN100504081C CN100504081C CNB2006100888348A CN200610088834A CN100504081C CN 100504081 C CN100504081 C CN 100504081C CN B2006100888348 A CNB2006100888348 A CN B2006100888348A CN 200610088834 A CN200610088834 A CN 200610088834A CN 100504081 C CN100504081 C CN 100504081C
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- rib
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- tiny bubble
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Abstract
The invention discloses a rib-mini bubble anti-drag mechanism, which comprises a stripe film, a piezoelectric changer, and an air intake pipe, etc. The piezoelectric changer comprises a piezoelectric ceramic and a substrate, the piezoelectric ceramic is fixed on the substrate; the two ends of the piezoelectric changer are connected with the stripe film, and an air cavity is formed in the middle; on the stripe film, a lot of ribs are provided; each rib is provided with a plurality of rib holes, which are arranged in equi-spaced way on each rib, and all pass through the ribs and are connected with the air cavity; the air intake pipe is communicated with the air cavity through the holes in the substrate at left of the substrate. The mechanism combines in an organic way the two anti-drag ways as rib and mini bubble anti-drag way, is featured by geometric non-smooth anti-drag and flexible non-smooth anti-drag, can achieve bigger anti-drag amount and be used for reducing the resistance of air vehicles and marine navigators, and is of wide application prospect.
Description
(1) technical field:
The present invention relates to a kind of rib-tiny bubble damping device, belong to the damping device of geometric non-smooth in the fluid bionic, drag-reducing and flexible non-smooth associating.
(2) background technique:
Bionic, drag-reducing can be divided into geometric non-smooth drag reduction and flexible non-smooth drag reduction two classes.The geometric non-smooth drag reduction is the metastable drag reduction type of its geometrical shape, is usually expressed as the drag reduction mode of passive type; Flexible non-smooth then be real-time, dynamic active drag reduction mode, can think higher drag reduction mode on certain meaning.When two kinds of drag reduction methods are used separately, do not improve the restriction that reaches the practical application condition as yet in view of drag reduction mechanism, its drag-reduction effect has certain narrow limitation.
With being used in combination of two kinds of bionic, drag-reducing methods, on the one hand, have the characteristics of two kinds of drag reduction methods concurrently, have complementary advantages, can realize bigger drag-reduction effect, help reducing the running resistance of aircraft and submarine navigation device; On the other hand, its further research is also helped improving bionic, drag-reducing mechanism, enrich the drag reduction theory.
(3) summary of the invention:
The purpose of this invention is to provide a kind of rib-tiny bubble damping device, it organically combines rib and two kinds of drag reduction methods of micro gas-bubble, have the characteristics of geometric non-smooth drag reduction and flexible non-smooth drag reduction concurrently, can realize bigger drag reduction amount, can be used for reducing the running resistance of aircraft and submarine navigation device, aspect national defense and military, be with a wide range of applications.
A kind of rib-tiny bubble damping device of the present invention, it is made of striped film, piezoelectric transducer and suction tude; This piezoelectric transducer is made up of piezoelectric constant and matrix, piezoelectric constant is fixed on the matrix, the two ends of piezoelectric transducer link to each other with the striped film, form an air chamber in the centre, many ribs are arranged on the striped film, many ribs hole is arranged on each rib, these rib holes are distributed on each rib, and all pass rib and link to each other with air chamber, suction tude then links to each other with air chamber by the matrix hole on the matrix left side.
The material of this striped film and dimensional parameters are determined according to each several part material parameter and user's designing requirement.
Wherein, this striped film can adopt MEMS (MEMS) technology such as the deep precise electrotyping mold forming of X-ray (LIGA) processes to form.
Wherein, this striped film also can adopt precision optical machinery processing method processing, for example can adopt milling machine to process rib earlier, adopts little brill to get out rib hole on the rib then.
Wherein, the material of matrix is silicon in this piezoelectric transducer
Wherein, the material of matrix is other metal in this piezoelectric transducer.
Wherein, the structure shape of rib is trapezoidal on this striped film.
Wherein, the structure shape of rib is the interval triangle on this striped film.
Wherein, the structure shape of rib is the interval v-shaped structure on this striped film.
Wherein, on this piezoelectric constant during on-load voltage, the gas that enters air chamber by suction tude and the matrix hole by the matrix left side after the effect of piezoelectric transducer, the rib hole ejection from the rib.
The thickness of this piezoelectric constant and matrix can be determined according to user's needs.
The voltage of this loading determines that according to piezoelectric constant size, material and user's needs the spray volume of gas is by piezoelectric constant size, on-load voltage, air chamber size, rib size and the decision of each several part material.
Rib-tiny bubble damping device of the present invention, its advantage is: rib and two kinds of drag reduction methods of micro gas-bubble are organically combined, have the characteristics of geometric non-smooth drag reduction and flexible non-smooth drag reduction concurrently, can realize bigger drag reduction amount, can be used for reducing the running resistance of aircraft and submarine navigation device, aspect national defense and military, be with a wide range of applications.
(4) description of drawings:
Fig. 1 is apparatus of the present invention plan views.
Fig. 2 is apparatus of the present invention plan views.
Fig. 3 is A among apparatus of the present invention Fig. 1-A sectional view.
Fig. 4 be among apparatus of the present invention Fig. 1 B to view.
Fig. 5 is that rib of the present invention is interval triangular structure schematic representation.
Fig. 6 is that rib of the present invention is interval v-shaped structure schematic representation.
Number in the figure is as follows:
11,21,31 striped films, 12,22,32 piezoelectric transducers, 13,23,33 piezoelectric constant
14,24,34 matrixes, 15,25,35 air chamber 16,26,36, rib
17,27,37 rib holes, 18,28,38 suction tude, 19,29,39 matrix holes
(5) embodiment:
A kind of rib-tiny bubble damping device of the present invention, its,
Embodiment one: see also Fig. 1 to shown in Figure 4, this device is made of striped film 11 and piezoelectric transducer 12, this piezoelectric transducer 12 is made up of piezoelectric constant 13 and matrix 14, piezoelectric constant 13 is fixed on the matrix 14, the two ends of piezoelectric transducer 12 link to each other with striped film 11, form an air chamber 15 in the centre, striped film 11 is provided with many ribs 16, every root bar is provided with many ribs hole 17, these rib holes 17 are distributed on every root bar, and all pass rib and link to each other with air chamber 15,18 matrix holes 19 by the matrix left side of suction tude link to each other with air chamber 15.
Rib-tiny bubble damping device of the present invention, on piezoelectric constant 13 during on-load voltage, the bending that piezoelectric constant 13 produces above-below direction, drive the bending that matrix 14 produces above-below direction, thereby in air chamber 15, produce certain pressure, make by suction tude 18 and the gas that enters air chamber 15 by matrix hole 19 after the effect of piezoelectric transducer rib hole 17 ejections from the rib 16.
Embodiment two: see also shown in Figure 5, this embodiment two is with embodiment one difference: the structure of its rib 26 is the interval triangle, rib becomes the pinnacle by original flat-top, and the top of rib does not have the rib hole, promptly only be provided with rib hole 27, and rib hole 27 also is to be distributed on the rib in the bottom of rib.Wherein, 21 is the striped film, and 22 is piezoelectric transducer, and 23 is piezoelectric constant, and 24 is matrix, and 25 is air chamber, and 28 is suction tude, and 29 is matrix hole.
Rib-tiny bubble damping device of the present invention, on piezoelectric constant 23 during on-load voltage, the bending that piezoelectric constant 23 produces above-below direction, drive the bending that matrix 24 produces above-below direction, thereby in air chamber 25, produce certain pressure, make by suction tude 28 and the gas that enters air chamber 25 by matrix hole 29 after the effect of piezoelectric transducer rib hole 27 ejections from the rib 26.
Embodiment three: see also shown in Figure 6, this difference of executing example three and preceding two embodiments is: the structure of its rib 36 is the interval V-arrangement, rib is by the original flat point end (the following summit that is the V word is pointed) that becomes, and the bottom of rib does not have the rib hole, only be provided with rib hole 37, and rib hole 37 also is to be distributed on the rib at the top of rib.Wherein, 31 is the striped film, and 32 is piezoelectric transducer, and 33 is piezoelectric constant, and 34 is matrix, and 35 is air chamber, and 38 is suction tude, and 39 is matrix hole.
Rib-tiny bubble damping device of the present invention, on piezoelectric constant 33 during on-load voltage, the bending that piezoelectric constant 33 produces above-below direction, drive the bending that matrix 34 produces above-below direction, thereby in air chamber 35, produce certain pressure, make by suction tude 38 and the gas that enters air chamber 35 by matrix hole 39 after the effect of piezoelectric transducer rib hole 37 ejections from the rib 36.
This shows that rib-tiny bubble damping device of the present invention is with geometric non-smooth drag reduction and flexibility The characteristics of non-smooth drag reduction, its advantage is: rib and two kinds of drag reduction methods of microbubble are organically combined, have concurrently The characteristics of geometric non-smooth drag reduction and flexible non-smooth drag reduction can realize bigger drag reduction amount, can be used for reducing The running resistance of aircraft and submarine navigation device is with a wide range of applications aspect national defense and military.
Claims (8)
1, a kind of rib-tiny bubble damping device is characterized in that: this device is made of striped film, piezoelectric transducer and suction tude; This piezoelectric transducer is made up of piezoelectric constant and matrix, this piezoelectric constant is fixed on the matrix, the two ends of this piezoelectric transducer link to each other with the striped film, form an air chamber in the centre, this striped film is provided with rib, and every root bar is provided with the rib hole, and the rib hole is distributed on every root bar, and all pass rib and link to each other with air chamber, suction tude then links to each other with air chamber by the matrix hole on the matrix left side.
2, a kind of rib-tiny bubble damping device according to claim 1 is characterized in that: this striped film employing precision optical machinery processing method processing, and adopt milling machine to process rib earlier, the back little brill of employing gets out the rib hole on the rib.
3, a kind of rib-tiny bubble damping device according to claim 1 is characterized in that: the material of matrix is a silicon in this piezoelectric transducer.
4, a kind of rib-tiny bubble damping device according to claim 1 is characterized in that: the material of matrix is a metal in this piezoelectric transducer.
5, according to claim 1 or 2 or 3 described a kind of rib-tiny bubble damping devices, it is characterized in that: the structure shape of rib is trapezoidal on this striped film.
6, according to claim 1 or 2 or 3 described a kind of rib-tiny bubble damping devices, it is characterized in that: the structure shape of rib is the interval triangle on this striped film.
7, according to claim 1 or 2 or 3 described a kind of rib-tiny bubble damping devices, it is characterized in that: the structure shape of rib is the interval v-shaped structure on this striped film.
8, a kind of rib-tiny bubble damping device according to claim 1, it is characterized in that: on this piezoelectric constant during on-load voltage, by suction tude and the gas that enters air chamber by matrix hole after the effect of piezoelectric transducer, the rib hole ejection from the rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100888348A CN100504081C (en) | 2006-07-19 | 2006-07-19 | Rib strip-tiny bubble damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100888348A CN100504081C (en) | 2006-07-19 | 2006-07-19 | Rib strip-tiny bubble damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101109402A CN101109402A (en) | 2008-01-23 |
| CN100504081C true CN100504081C (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100888348A Expired - Fee Related CN100504081C (en) | 2006-07-19 | 2006-07-19 | Rib strip-tiny bubble damping device |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749000B (en) * | 2012-07-02 | 2014-12-31 | 中国科学院力学研究所 | Horizontal underwater manual ventilation cavitation simulating device |
| CN103821801B (en) * | 2014-02-23 | 2016-02-10 | 中国科学院工程热物理研究所 | A kind of drag reduction rib |
| CN106015202B (en) * | 2016-06-30 | 2018-06-22 | 中国船舶重工集团公司第七一九研究所 | For inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise |
| CN108082388B (en) * | 2017-11-30 | 2020-07-14 | 中国船舶工业系统工程研究院 | Bionic drag reduction surface structure compounded by micro-nano structure and hydrophobic modification phase |
| CN109682549B (en) * | 2019-03-01 | 2023-09-08 | 冀凯河北机电科技有限公司 | Novel trachea capable of reducing pressure drop |
| CN110203323A (en) * | 2019-05-27 | 2019-09-06 | 武汉理工大学 | A kind of high speed operation device of combination Friction Reduction by Micro-bubbles technology and grooved surface turbulent flow drag reduction technology |
| CN112548359B (en) * | 2020-11-30 | 2023-03-21 | 贵州大学 | Preparation method of surface functional composite structured monocrystalline silicon carbide |
| CN113479287A (en) * | 2021-07-29 | 2021-10-08 | 西北工业大学 | Drag reduction film for ship |
| CN113833719B (en) * | 2021-09-15 | 2023-03-31 | 南京理工大学 | Electromagnetic-groove composite damping device for marine navigation body |
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2006
- 2006-07-19 CN CNB2006100888348A patent/CN100504081C/en not_active Expired - Fee Related
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| CN101109402A (en) | 2008-01-23 |
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