CN2663964Y - Equipment for damping Taylor wave in detonation wind tunnel - Google Patents
Equipment for damping Taylor wave in detonation wind tunnel Download PDFInfo
- Publication number
- CN2663964Y CN2663964Y CN 03209201 CN03209201U CN2663964Y CN 2663964 Y CN2663964 Y CN 2663964Y CN 03209201 CN03209201 CN 03209201 CN 03209201 U CN03209201 U CN 03209201U CN 2663964 Y CN2663964 Y CN 2663964Y
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- section
- detonation
- pipe body
- variable cross
- wave
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model relates to equipment for damping Taylor wave in detonation wind tunnel, wherein, a detonation section pipe body is communicated with a variable cross-section section pipe body; a membrane is fixed at the other port of the variable cross-section section pipe body; an end cap is fixed on the blueing of the other port of the detonation section pipe body through a clamp; a dilatancy cavity is arranged between the detonation section pipe body and the variable cross-section section pipe body; both ends of the pipe body of the dilatancy cavity are provided with transition sections with the inside diameter identical to that of the detonation section pipe body and the variable cross-section section pipe body; both ports of the transition sections are coaxially communicated with the detonation section pipe body and the variable cross-section section pipe body through the clamp; the port of the dilatancy cavity communicated with the detonation section pipe body through the transition section is bigger than the other port of the dilatancy cavity communicated with the variable cross-section section pipe body through the transition section. Due the equipment being additionally provided with the dilatancy cavity, detonation wave which enters into the dilatancy cavity and comes out from the pipe body of smaller caliber arranged at lower reach generates a reflection shock wave transmitted up the stream at the lower reach end wall of the dilatancy cavity; moreover, the reflection shock wave vibrates inside the dilatancy cavity and interacts with the Taylor wave at upper reach following close to detonation wave front so as to damp the Taylor wave.
Description
Technical field
The utility model relates to the flash chamber in a kind of detonation wind-tunnel, particularly relates to a kind of device that weakens the Taylor wave in the detonation wind-tunnel.
Background technology
In the detonation driven shock tunnel, produce the Taylor ripple that follows detonation wave front closely when adopting forward detonation mode to move inevitably, pressure, speed, temperature through this ripple effect detonation product all descend to some extent, What is more, it is very remarkable that the Taylor ripple will continue to trail the attenuation of incident master shock wave behind the wind-tunnel master film, the exercising result of this ripple weakens forward detonation driven ability, and the permanent experimental period of storage chamber is sharply shortened.For head it off, people increase by a contraction section in the detonation wind tunnel device of routine, promptly there is a contraction section body detonation section body in the detonation wind-tunnel and variable cross section section body junction, this contraction section can reach the effect that weakens the Taylor wave in the detonation wind-tunnel, but the effect that weakens the Taylor wave in the detonation wind-tunnel is undesirable, can not satisfy the requirement of scientific experiment far away.
Summary of the invention
The purpose of this utility model is: in order to weaken the Taylor wave in the detonation wind-tunnel effectively, reach the permanent experimental period of experimental state is increased, there is adequate time to finish the data that to collect, near the diaphragm place device one dilatation chamber, that weaken the Taylor wave in the detonation wind-tunnel is set in the detonation section thereby provide a kind of.
The purpose of this utility model is achieved in that
The utility model provides is used for weakening the device of the Taylor wave of detonation wind-tunnel, comprise: detonation section body 3, variable cross section section body 4 (center pit section body), end cap 1, fixing hoop 2 and diaphragm 5, wherein detonation section body 3 is communicated with variable cross section section body 4, and diaphragm 5 is fixed on the another port of variable cross section section body 4; End cap 1 is fixed on the turning blue of detonation section body 3 another port by clip 2; It is characterized in that: described detonation section body 3 is provided with a dilatation chamber 6 with 4 two sections centres of variable cross section section body; There is a transition section at the body two ends in described dilatation chamber 6, the internal diameter of this transition section two-port is identical with variable cross section section body 4 with detonation section body 3 respectively, the two-port of transition section is communicated with variable cross section section body 4 with detonation section body 3 coaxially by clip 2, the port that dilatation chamber 6 is communicated with detonation section body 3 by transition section is bigger with the port that variable cross section section body 4 is communicated with by transition section than dilatation chamber 6.
The internal diameter in described dilatation chamber 6 is less than 50% with the ratio of detonation section body 3 internal diameters; The length in its dilatation chamber 6 is the internal diameter that is equal to or greater than dilatation chamber 6.
The device of the Taylor wave that is used for weakening the detonation wind-tunnel that the utility model provides (Taylor ripple) is after the detonation section increases by a dilatation chamber near main film, detonation wave enters the dilatation chamber and produces a reflected shock wave of upstream propagating in dilatation chamber downstream end wall when being spread out of by the more small-bore body in downstream, and this ripple Taylor wave interaction of closelying follow detonation wave front with the upstream of vibrate in cavity weakens it.The wave of compression (may pool shock wave) that meanwhile produces a branch of propagates down stream in reverse shock wave oscillatory process catches up with and fills up the main shock wave part of early stage by the Taylor wave attenuation, the exercising result of this physical process is weakened the influence of Taylor ripple, the permanent experimental period of storage chamber is doubled and redoubled, finally can brings into play the strong driving force of forward detonation as much as possible.
The dilatation chamber device that weakens the Taylor wave in the detonation wind-tunnel of the present utility model, utilize in the dilatation chamber produce to detonation section upstream reflected shock wave decay Taylor ripple, launch simultaneously wave of compression downstream and fill up the main shock wave part of early stage, finally weaken the device of the forward detonation driven of Taylor wave action by the Taylor wave attenuation.
Description of drawings
Fig. 1 is the part-structure synoptic diagram of general detonation wind-tunnel
Fig. 2 is the apparatus structure synoptic diagram with dilatation chamber of the present utility model
The drawing explanation
1-rear end cap 2-clip 3-detonation section body
4-variable cross section section body 5-diaphragm 6-dilatation chamber
Embodiment
Embodiment 1
Referring to Fig. 2, the device that weakens the Taylor wave in the detonation wind-tunnel of present embodiment, comprise: end cap 1, fixing hoop 2, detonation section body 3, variable cross section section body 4 (center pit section body) and diaphragm 5, wherein end cap 1 is fixed on the turning blue of detonation section body 3 by clip 2; Between the other end of described detonation section body 3 turns blue and center pit section body 4 one ends turn blue.It is φ 250mm dilatation chamber 6 that detonation section body 3,4 two sections centres of variable cross section section body are provided with a diameter, and length is 350mm; There is a transition section at the body two ends in this dilatation chamber 6, the internal diameter of this transition section two-port is identical with variable cross section section body 4 with detonation section body 3 respectively, the two-port of transition section is communicated with variable cross section section body 4 with detonation section body 3 coaxially by clip 2, the port that dilatation chamber 6 is communicated with transition section on being connected detonation section body 3 (promptly being left transition section in Fig. 2) diameter is φ 150mm, and the port that dilatation chamber 6 is communicated with the transition section that is connected variable cross section section body 4 (promptly being right transition section in Fig. 2) diameter is φ 100mm.
Comprise that also it is φ 250mm dilatation chamber 6 that described detonation section body 3 is provided with a diameter with 4 two sections centres of variable cross section section body, length is 250mm, and 6 two ends, dilatation chamber prolong a transition section; The body two ends of this transition section are communicated with by clip 2 coaxially with the port of detonation section body 3 and variable cross section section body 4 respectively, dilatation chamber 6 is φ 150mm by the port diameter that transition section is communicated with detonation section body 3, and dilatation chamber 6 is φ 100mm by the port diameter that transition section is communicated with variable cross section section body 4.
Claims (2)
1. device that weakens the Taylor wave in the detonation wind-tunnel, comprise: detonation section body (3), variable cross section section body (4), end cap (1), fixing hoop (2) and diaphragm (5), wherein detonation section body (3) is communicated with variable cross section section body (4), and diaphragm (5) is fixed on the another port of variable cross section section body (4); End cap (1) is fixed on the turning blue of detonation section body (3) another port by clip (2); It is characterized in that: described detonation section body (3) is provided with a dilatation chamber (6) with (4) two sections centres of variable cross section section body; There is a transition section at the body two ends in described dilatation chamber (6), the internal diameter of this transition section two-port is identical with variable cross section section body (4) with detonation section body (3) respectively, the two-port of transition section is communicated with variable cross section section body (4) with detonation section body (3) coaxially by clip (2), the port that dilatation chamber (6) is communicated with detonation section body (3) by transition section is bigger with the port that variable cross section section body (4) is communicated with by transition section than dilatation chamber (6).
2. the described device that weakens the Taylor wave in the detonation wind-tunnel of claim 1 is characterized in that: the ratio of the internal diameter in described dilatation chamber (6) and detonation section body (3) internal diameter is for less than 50%; The length in its dilatation chamber (6) is for being equal to or greater than the internal diameter of dilatation chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03209201 CN2663964Y (en) | 2003-09-08 | 2003-09-08 | Equipment for damping Taylor wave in detonation wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03209201 CN2663964Y (en) | 2003-09-08 | 2003-09-08 | Equipment for damping Taylor wave in detonation wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2663964Y true CN2663964Y (en) | 2004-12-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03209201 Expired - Fee Related CN2663964Y (en) | 2003-09-08 | 2003-09-08 | Equipment for damping Taylor wave in detonation wind tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2663964Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407947A (en) * | 2011-08-15 | 2012-04-11 | 中国科学院力学研究所 | Shock tunnel detonation double-driving method and device |
| CN103149007A (en) * | 2013-01-29 | 2013-06-12 | 中国科学院力学研究所 | Detonation drive shock tunnel forming membrane |
| CN107421712A (en) * | 2017-08-16 | 2017-12-01 | 武汉理工大学 | A kind of device and method for weakening hydrogen detonation shock tube rarefaction wave |
| CN107976294A (en) * | 2017-11-08 | 2018-05-01 | 武汉理工大学 | A kind of device and method for weakening hydrogen detonation shock tube rarefaction wave |
| CN110394378A (en) * | 2019-08-09 | 2019-11-01 | 南京晨光集团有限责任公司 | Fixture for gas generator cylinder class component assembly distortion correction |
| CN111397829A (en) * | 2020-05-21 | 2020-07-10 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Combined sparse wave elimination device |
-
2003
- 2003-09-08 CN CN 03209201 patent/CN2663964Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407947A (en) * | 2011-08-15 | 2012-04-11 | 中国科学院力学研究所 | Shock tunnel detonation double-driving method and device |
| CN102407947B (en) * | 2011-08-15 | 2013-12-04 | 中国科学院力学研究所 | Shock tunnel detonation double-driving method and device |
| CN103149007A (en) * | 2013-01-29 | 2013-06-12 | 中国科学院力学研究所 | Detonation drive shock tunnel forming membrane |
| CN103149007B (en) * | 2013-01-29 | 2015-08-12 | 中国科学院力学研究所 | A kind of detonation driven shock tunnel shaping membrane |
| CN107421712A (en) * | 2017-08-16 | 2017-12-01 | 武汉理工大学 | A kind of device and method for weakening hydrogen detonation shock tube rarefaction wave |
| CN107421712B (en) * | 2017-08-16 | 2019-05-03 | 武汉理工大学 | A kind of device and method weakening hydrogen detonation shock tube rarefaction wave |
| CN107976294A (en) * | 2017-11-08 | 2018-05-01 | 武汉理工大学 | A kind of device and method for weakening hydrogen detonation shock tube rarefaction wave |
| CN107976294B (en) * | 2017-11-08 | 2020-01-14 | 武汉理工大学 | Device and method for weakening rarefaction wave of oxyhydrogen detonation shock tube |
| CN110394378A (en) * | 2019-08-09 | 2019-11-01 | 南京晨光集团有限责任公司 | Fixture for gas generator cylinder class component assembly distortion correction |
| CN111397829A (en) * | 2020-05-21 | 2020-07-10 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Combined sparse wave elimination device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |