CN108533580A - A kind of manufacture of hair fastener whirlpool and cutting-off device and method - Google Patents
A kind of manufacture of hair fastener whirlpool and cutting-off device and method Download PDFInfo
- Publication number
- CN108533580A CN108533580A CN201810540323.8A CN201810540323A CN108533580A CN 108533580 A CN108533580 A CN 108533580A CN 201810540323 A CN201810540323 A CN 201810540323A CN 108533580 A CN108533580 A CN 108533580A
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- Prior art keywords
- conduit
- whirlpool
- collar vortex
- hair fastener
- generating system
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 11
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 230000001360 synchronised effect Effects 0.000 claims abstract description 7
- 230000002572 peristaltic effect Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000004043 dyeing Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000001427 coherent effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C3/00—Circuit elements having moving parts
- F15C3/10—Circuit elements having moving parts using nozzles or jet pipes
Abstract
The present invention relates to a kind of manufacture of hair fastener whirlpool and cutting-off devices, including：Conduit (1) is horizontally arranged, and inside is connected with the fluid of constant speed；Collar vortex generating system is arranged below the conduit (1), and for providing pulsing jet into the conduit (1), the pulsing jet is vertical with conduit (1) interior fluid flow direction, and the two acts on forming hair fastener whirlpool；Collar vortex interrupts system, is arranged in the conduit (1), above the collar vortex generating system, for interrupting the hair fastener whirlpool；Synchronous control system interrupts system with the collar vortex generating system and the collar vortex respectively and connect.Compared with prior art, the manufacture in single-row whirlpool can be achieved in the present invention, and can realize the manufacture in multiple row whirlpool, and collar vortex interrupts after manufacture, ensure that it is a variety of in the case of practicability of the invention.
Description
Technical field
The present invention relates to the flowing control field of three-dimensional flow field, more particularly, to a kind of manufacture of hair fastener whirlpool and cutting-off device and
Method.
Background technology
Hair fastener whirlpool also known as horse shoe vortex are proposed by Theodorsen (1952) earliest, refer to a kind of whirlpool knot of Ω shapes
Structure, whirlpool leg is flowed to two and the exhibition that lifting is tilted from one is overlapped to arch collar vortex structure.It is wall shear flow
Element.Hair fastener whirlpool generates principle：Due to the disturbance that nonlinear interaction generates in flowing, prospect spape structure
Middle part be gradually lifted upwards along normal direction, under the effect of dragging of upper layer fast averaging stream, protrude forward, and opened up originally along flow direction
To whirlpool both sides partially due to by the mean flow effect at a slow speed of wall surface viscosity and bottom, can not forward be transported with identical speed
Dynamic, overall structure is stretched along flow direction, the head that middle part is lifted and part outstanding forms hair fastener whirlpool forward, and the portion of both sides
It is divided to, is gradually drawn into two whirlpool legs in hair fastener whirlpool, whirlpool leg structure obtains after more adequately developing, along the hair fastener whirlpool of flow direction knot
Structure basically forms.
Mainly there are two big effects in hair fastener whirlpool：First, it generates upper up-flow between two legs, stream is swept under being generated except two legs, is produced
It thinks of a way to momentum-exchange and positive eddy stress；Second is that its two legs stretch, energy is absorbed from surrounding, is converted into tubulence energy, is increased
Turbulence intensity.
Hair fastener whirlpool generally can all run through entire boundary layer, transmit, transport tubulence energy, therefore the production of hair fastener vortex pair turbulent flow
Raw, maintenance has significant contribution.The formation in hair fastener whirlpool usually occurs in the form of vortex row, along with the generation of a large amount of turbulent stress,
And the whole evolution result of this structure will generate so-called large-scale structure and super large scale structure.Due to the ruler in hair fastener whirlpool
Degree is very big, so being easier to be found in FLOW VISUALIZATION, therefore causes the great interest of researcher.Exist in view of hair fastener whirlpool
It is mostly targetedly to influence turbulence edge when carrying out turbulence control that turbulent flow, which is generated with the important function in energy transmission,
Hair fastener whirlpool in interlayer is to achieve the purpose that control turbulent boundary layer.In recent years, as people are to high reynolds number turbulent flow research
Deeply, it is found that the understanding to wall turbulent flow rule obtained under low reynolds number in the past has certain limitation, therefore large scale phase
Stem structure becomes particularly significant for the dynamic process of high reynolds number turbulent flow, if it is possible to disclose large-scale structure and be tieed up in turbulent flow
Effect in holding, for helping people preferably to recognize high reynolds number turbulent flow, it is further proposed that more accurate effective turbulent flow mould
Type has important meaning.
Specific aim control is carried out to turbulent flow, can achieve the purpose that reduce flow resistance.The foundation of turbulence control is turbulent flow
The formation mechanism and Evolution of coherent structure, when being controlled turbulent flow according to Turbulent Coherent Structures characteristic, the resistance of flowing
It often will appear associated variation.Hair fastener whirlpool is as a kind of typical large scale coherent structure, formation mechanism and rule of developing
Rule reduces flow resistance and suffers from important meaning for realizing turbulence control.However, hair fastener whirlpool generally exists only in natural wall
In the shear turbulence of face, therefore in the research to its formation mechanism and Evolution, artificial hair fastener whirlpool just shows very heavy
The meaning wanted.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of hair fastener whirlpool manufacture with
Cutting-off device and method realize interrupting for single-row whirlpool, the manufacture in multiple row whirlpool and collar vortex.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of manufacture of hair fastener whirlpool and cutting-off device, including：
Conduit is horizontally arranged, and inside is connected with the fluid of constant speed；
Collar vortex generating system is arranged below the conduit, described for providing pulsing jet into the conduit
Pulsing jet it is vertical with fluid flow direction in conduit, the two acts on forming hair fastener whirlpool；
Collar vortex interrupts system, is arranged in the conduit, above the collar vortex generating system, described for interrupting
Hair fastener whirlpool；
Synchronous control system interrupts system with the collar vortex generating system and the collar vortex respectively and connect.
The collar vortex generating system includes the tuning fork shape runner being arranged below the conduit, the branch outflux of runner
It stretches into conduit and maintains an equal level with the lower surface of conduit, each tributary is entirely located in conduit and opens up on same section, tuning fork shape flow field end
It is connected with the water tank for providing water source, the first peristaltic pump is equipped between the water tank and tuning fork shape runner.
The tributary of the tuning fork shape runner is equipped with valve.
The tributary of the tuning fork shape runner is 2 or more.
It includes the nozzle being arranged in the conduit that the collar vortex, which interrupts system, and the nozzle is located at the sound
The surface of the one of branch outflux of fork-shaped runner；The nozzle end is connected with the water tank for providing water source, described
The second peristaltic pump is equipped between water tank and nozzle.
The synchronous control system includes the synchronizer being connect respectively with first peristaltic pump and the second peristaltic pump.
The conduit is rectangular duct.
A method of it carries out the manufacture of hair fastener whirlpool using the device and interrupts, include the following steps：
1) fluid in collar vortex generating system is dyed, empties collar vortex generating system and collar vortex interrupts the sky in system runner
Gas；
2) flow velocity for stablizing fluid in conduit starts collar vortex generating system, and the dyeing fluid in collar vortex generating system is with arteries and veins
The form for rushing jet stream enters in conduit, forms prospect spape, in the conduit under the action of mainstream, prospect spape structure is lifted upwards
Central part, along flow direction protrude forward, form complete hair fastener whirlpool；
3) according to the mainstream flow velocity in the speed of collar vortex generating system pulsing jet and conduit, adjustment collar vortex interrupts system spray
The angle of inclination of mouth starts synchronization system, so that collar vortex generating system and collar vortex is interrupted the fluid in system while spraying, hair fastener whirlpool
It is interrupted in downstream somewhere.
Compared with prior art, the present invention can not only produce required hair fastener whirlpool, moreover it is possible to by adjusting peristaltic pump
Frequency and conduit in mainstream flow velocity adjust hair fastener whirlpool size；Subsidiary collar vortex interrupts system, to study conduit coherent structure pair
The influence of conduit drag reduction flow creates conditions.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Reference numeral：
1 is conduit；2 be tuning fork shape runner；3,4 be valve；5 be the first peristaltic pump；6 be water tank；7 be synchronizer；8 be water
Case；9 be the second peristaltic pump；10 be nozzle.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment
As shown in Figure 1, the manufacture of hair fastener whirlpool includes with cutting-off device：
Conduit 1, it is rectangular, it is horizontally arranged, the fluid of constant speed is connected in conduit 1 (such as big arrow direction institute in figure
Show)；
Collar vortex generating system is arranged in the lower section of conduit 1, pulsing jet is provided into conduit 1；
Collar vortex interrupts system, the surface for the collar vortex generating system being arranged in conduit 1；
Synchronous control system, connects collar vortex generating system and collar vortex interrupts system.
Wherein, collar vortex generating system includes：
Tuning fork shape runner 2 is arranged in the lower section of conduit 1, and tuning fork shape runner contains that there are two branches, completely right along center line
Claim, tributary bore and tributary spacing are preferably 5mm or so；Be respectively equipped on two tributaries of tuning fork shape runner 2 valve 3,
4, to control the break-make in tributary.Two of tuning fork shape runner 2 outlets are arranged in conduit 1, and in the exhibition of conduit 1 to same
On straight line；Outlet and the inner surface of conduit 1 maintain an equal level；
First peristaltic pump 5, the first peristaltic pump 5 provide power for collar vortex generating system so that can be produced in tuning fork shape runner
Raw pulsing jet, the first peristaltic pump 5 can adjust pulse frequency.
Water tank 6, water tank 6 provide fluid origin for collar vortex generating system.
Collar vortex interrupts system：
Nozzle 10 is arranged in the surface of 2 a certain branch outflux of tuning fork shape runner, the stream of the fluid in conduit 1 of nozzle 10
Into vertical plane in vertical direction with certain angle, to ensure that the fluid sprayed in tuning fork shape runner 2 is sprayed with nozzle 10
Fluid can meet in downstream somewhere, actual angle is according to circumstances specifically calculated；
Second peristaltic pump 9, the second peristaltic pump 9 interrupt system for collar vortex and provide power so that nozzle 10 can generate pulse
Jet stream, the second peristaltic pump 9 can adjust pulse frequency；
Water tank 8, water tank 8 interrupt system for collar vortex and provide fluid origin.
Synchronous control system includes synchronizer 7, and synchronizer 7 is connected to the first peristaltic pump 5 and the second peristaltic pump 9, control two
Person runs simultaneously.
The present embodiment is additionally provided carries out the manufacture of hair fastener whirlpool and the method that interrupts using above-mentioned apparatus, with single-row whirlpool interrupt for
Example, includes the following steps：
1) jet stream prepares：
Water in water tank 6 is dyed into dark color；Start the first peristaltic pump 5, the air in tuning fork shape runner 2 is emptied.
Start the second peristaltic pump 9, the air in nozzle 10 is emptied.
2) collar vortex occurs：
In conduit 1 after the flow speed stability of fluid, start the first peristaltic pump 5, the dyeing water in tuning fork shape runner 2 is compacted first
It under the action of dynamic pump 5, turns to pulsing jet and enters in conduit 1, into the effect of dyeing water mainstream in conduit 1 after conduit 1
Under, it is stretched along flow direction while upward lifting, complete hair fastener vortex structure can be formed after very short time.
3) collar vortex interrupts：
According to the mainstream flow velocity in the speed of 2 outlet jet of tuning fork shape runner and conduit 1, the inclination angle of nozzle 10 is adjusted
Degree；Start synchronizer 7, so that the fluid in tuning fork shape runner 2 is sprayed simultaneously with the fluid in nozzle 10, then the hair fastener whirlpool meeting generated
It meets in the fluid that downstream somewhere is ejected with nozzle 10, to interrupt collar vortex.
When needing two row (multiple row) hair fastener whirlpools, after opening simultaneously valve 3,4, peristaltic pump 5 is opened, you can observe identical
The two of frequency arrange (multiple row) hair fastener whirlpools, or even the processes such as merging that hair fastener whirlpool can be observed.
Claims (8)
1. a kind of hair fastener whirlpool manufacture and cutting-off device, which is characterized in that including：
Conduit (1) is horizontally arranged, and inside is connected with the fluid of constant speed；
Collar vortex generating system is arranged below the conduit (1), for providing pulsing jet, institute into the conduit (1)
The pulsing jet stated is vertical with conduit (1) interior fluid flow direction, and the two acts on forming hair fastener whirlpool；
Collar vortex interrupts system, is arranged in the conduit (1), above the collar vortex generating system, described for interrupting
Hair fastener whirlpool；
Synchronous control system interrupts system with the collar vortex generating system and the collar vortex respectively and connect.
2. a kind of hair fastener whirlpool manufacture according to claim 1 and cutting-off device, which is characterized in that the collar vortex system
System includes the tuning fork shape runner (2) being arranged below the conduit (1), and the branch outflux of runner stretches into conduit (1) and and slot
The lower surface in road (1) maintains an equal level, and each tributary is entirely located in conduit (1) and opens up on same section, and tuning fork shape runner (2) end is connected with use
In the water tank for providing water source, the first peristaltic pump (5) is equipped between the water tank and tuning fork shape runner (2).
3. a kind of hair fastener whirlpool manufacture according to claim 2 and cutting-off device, which is characterized in that the tuning fork shape runner
(2) tributary is equipped with valve (3,4).
4. a kind of hair fastener whirlpool manufacture according to claim 2 and cutting-off device, which is characterized in that the tuning fork shape runner
(2) tributary is 2 or more.
5. a kind of hair fastener whirlpool manufacture according to claim 2 and cutting-off device, which is characterized in that the collar vortex, which interrupts, is
System includes the nozzle (10) that is arranged in the conduit (1), the nozzle (10) be located at the tuning fork shape runner (2) its
In a branch outflux surface；Described nozzle (10) end is connected with the water tank for providing water source, the water tank with
The second peristaltic pump (9) is equipped between nozzle (10).
6. a kind of hair fastener whirlpool manufacture according to claim 5 and cutting-off device, which is characterized in that the synchronous control system
System includes the synchronizer (7) being connect respectively with first peristaltic pump (5) and the second peristaltic pump (9).
7. a kind of hair fastener whirlpool manufacture according to claim 1 and cutting-off device, which is characterized in that the conduit (1) is
Rectangular duct.
8. a kind of device using as described in claim 1~7 is any carries out the method that hair fastener whirlpool manufactures and interrupts, feature exists
In described method includes following steps：
1) fluid in collar vortex generating system is dyed, empties collar vortex generating system and collar vortex interrupts the air in system runner；
2) flow velocity for stablizing fluid in conduit (1) starts collar vortex generating system, and the dyeing fluid in collar vortex generating system is with pulse
The form of jet stream enters in conduit (1), forms prospect spape, in the conduit (1) under the action of mainstream, prospect spape structure is upward
The central part of lifting protrudes forward along flow direction, forms complete hair fastener whirlpool；
3) according to the mainstream flow velocity in the speed of collar vortex generating system pulsing jet and conduit (1), adjustment collar vortex interrupts system spray
The angle of inclination of mouth (10) starts synchronization system, so that collar vortex generating system and collar vortex is interrupted the fluid in system while spraying, and sends out
Card whirlpool is interrupted in downstream somewhere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540323.8A CN108533580A (en) | 2018-05-30 | 2018-05-30 | A kind of manufacture of hair fastener whirlpool and cutting-off device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540323.8A CN108533580A (en) | 2018-05-30 | 2018-05-30 | A kind of manufacture of hair fastener whirlpool and cutting-off device and method |
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| CN108533580A true CN108533580A (en) | 2018-09-14 |
Family
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| CN201810540323.8A Pending CN108533580A (en) | 2018-05-30 | 2018-05-30 | A kind of manufacture of hair fastener whirlpool and cutting-off device and method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040051187A1 (en) * | 2002-09-10 | 2004-03-18 | Thomas Andrew Sydney Withiel | Simple method for the controlled production of vortex ring bubbles of a gas in a liquid |
| US20120134753A1 (en) * | 2010-06-01 | 2012-05-31 | Simpson Roger L | Bridge pier and abutment scour preventing apparatus with vortex generators |
| CN103933858A (en) * | 2014-02-28 | 2014-07-23 | 东南大学 | Tangential double vortex SCR mixer |
| CN208966776U (en) * | 2018-05-30 | 2019-06-11 | 上海电力学院 | A kind of manufacture of hair fastener whirlpool and cutting-off device |
-
2018
- 2018-05-30 CN CN201810540323.8A patent/CN108533580A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040051187A1 (en) * | 2002-09-10 | 2004-03-18 | Thomas Andrew Sydney Withiel | Simple method for the controlled production of vortex ring bubbles of a gas in a liquid |
| US20120134753A1 (en) * | 2010-06-01 | 2012-05-31 | Simpson Roger L | Bridge pier and abutment scour preventing apparatus with vortex generators |
| CN103933858A (en) * | 2014-02-28 | 2014-07-23 | 东南大学 | Tangential double vortex SCR mixer |
| CN208966776U (en) * | 2018-05-30 | 2019-06-11 | 上海电力学院 | A kind of manufacture of hair fastener whirlpool and cutting-off device |
Non-Patent Citations (1)
| Title |
|---|
| 包芸 等: "窄方腔软湍流 Ｒayleigh-Bénard 热对流中角涡的三维发卡涡结构", 《计算机辅助工程》, vol. 25, no. 2, 30 April 2016 (2016-04-30) * |
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