CN109974972A - A kind of experimental provision and its speed-measuring method of the pulsing jet impact rotation wall surface for particle image velocimetry - Google Patents
A kind of experimental provision and its speed-measuring method of the pulsing jet impact rotation wall surface for particle image velocimetry Download PDFInfo
- Publication number
- CN109974972A CN109974972A CN201910340176.4A CN201910340176A CN109974972A CN 109974972 A CN109974972 A CN 109974972A CN 201910340176 A CN201910340176 A CN 201910340176A CN 109974972 A CN109974972 A CN 109974972A
- Authority
- CN
- China
- Prior art keywords
- sink
- round
- outside
- square
- wall surface
- 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.)
- Granted
Links
- 238000000917 particle-image velocimetry Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052802 copper Inorganic materials 0.000 claims abstract description 54
- 239000010949 copper Substances 0.000 claims abstract description 54
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 239000002245 particle Substances 0.000 claims description 24
- 238000002474 experimental method Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 claims description 2
- 238000009510 drug design Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000007507 annealing of glass Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000000827 velocimetry Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
- G01P5/20—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance using particles entrained by a fluid stream
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The present invention is the experimental provision and its speed-measuring method of a kind of pulsing jet impact rotation wall surface for particle image velocimetry, including pulsing jet system, rotation wall surface system and PIV measuring system；The pulsing jet system includes reservoir, magnetic drive pump, flowmeter, gate valve, impulse sender, connection hose, circular copper pipe；The rotation wall surface system includes frequency converter, motor, axis, disk；The PIV measuring system includes square-outside and round-inside sink, sheet laser, laser, CCD camera, synchroscope, computer, and sheet laser, laser, synchroscope, CCD camera, computer are sequentially connected；The present invention has rational design, easy to operate, and can comprehensively study different Reynolds number, impact distance, wall surface revolving speed and pulse period to the affecting laws of each flow characteristics in jet impulse rotation wall surface flow field.
Description
Technical field
The present invention relates to a kind of experimental provision of pulsing jet impact rotation wall surface for particle image velocimetry and its surveys
Fast method is mainly used for the instantaneous velocity measurement of pulsing jet impact rotation wall surface Coupled Flow.
Background technique
Particle image velocimetry (Particle Image Velocimetry, hereinafter referred to as PIV) is a kind of repeatedly camera shooting
To record the position of particle in flow field, and the image taken the photograph is analyzed, thus the method for measuring flowing velocity.The basic principle is that
Trace particle is dispensed in flow field, and is incident in institute's flow measurement field areas with pulse laser sheet laser, by twice in succession or repeatedly
Exposure, the image of particle are recorded on egative film or in CCD camera.Using optics Young fringe method, correlation method or cross-correlation
Method, the point-by-point image for handling PIV egative film or CCD record, obtains flow field velocity distribution.
It is various in aviation electronics cooling, chemical vapor deposition, glass annealing, Surface heat-treatent etc. that jet impulse rotates wall surface
There is important application value in industrial application.In addition to this, rotating machinery is most simple and widely used structure in life,
Many systems can approximation regard as jet impulse rotation wall surface (such as jet self-priming pump etc.).Jet impulse is a kind of extremely effective
Reinforcing localized heat transfer or mass transfer method, the axial symmetry wall jet stream that the shearing effect of jet impulse and rotation wall peripheral generate
Interaction can produce extremely complex and violent flowing, can significantly improve diabatic process, therefore to jet impulse
Rotation wall surface carry out research have important science and engineering application value.
Currently, existing jet impulse rotation wall surface experimental provision has the following characteristics that most of experimental rig using heat
Line hot-film anemometer (HWFA) and Laser Doppler Velocimeter (LDV) calculate the movement velocity of particle, realize that the nothing of stream field connects
Touching measurement.However, these methods all only use single point measuring technique, it is difficult to realize the whole audience, the instantaneous measurement of stream field.Few portion
There is certain limitation in point jet impulse rotation wall surface PIV experiment device, can not systematically study different wall surface revolving speeds, Reynolds number,
Influence of the impact distance to jet impulse rotation wall surface Coupled Flow.Past jet impulse rotates wall surface PIV experiment device only needle
To solid jet, introducing pulse characteristic is not accounted for.Paper " the Development of of Y.minagawa et al.
The paper of turbulent impinging jet on a rotating disk " (2004), T.astarita et al.
“Convective heat transfer on a rotating disk with a centred impinging round
Paper " the Review of fluid flow and convective heat of jet " (2007) and S.Harmand et al.
The experiment that transfer within rotating disk cavities with impinging jet " (2013) is used
Device has above-mentioned 1,2,3 features；The paper " influence of the jet impulse to rotating circular disk heat transfer characteristic " of Yu Yanglei et al.
(2018) with experimental provision have above-mentioned 1,3 features；Paper " the Particle image of Liu Y H et al.
velocimetry measurement of jet impingement in a cylindrical chamber with a
Heated rotating disk " (2013) with experimental provision have above-mentioned 2,3 features.
Through retrieving, there is presently no the patents that rotation wall surface PIV experiment device is impacted about pulsing jet.
Summary of the invention
In order to study the Transient Flow structure of pulsing jet impact rotation wall surface, the present invention provides one kind to be used for particle figure
As the experimental provision and its speed-measuring method of the pulsing jet impact rotation wall surface to test the speed, which can comprehensively study different thunders
The affecting laws of various flow characteristics in promise number, impact distance, wall surface revolving speed and pulse period stream field.
The object of the present invention is achieved like this, a kind of pulsing jet impact rotation wall surface for particle image velocimetry
Experimental provision, it is characterized in that: including pulsing jet system, rotation wall surface system and PIV measuring system；
The pulsing jet system includes reservoir, magnetic drive pump, flowmeter, gate valve, impulse sender, connection hose, round copper
Pipe, reservoir are successively connected through magnetic drive pump, flowmeter, gate valve, impulse sender, connection hose and circular copper pipe perforation；
The rotation wall surface system includes frequency converter, motor, axis, disk, and frequency converter, motor are fixed on support frame, and frequency conversion
Device is electrically connected with motor, and one end of the axis and the power output shaft of motor are fixed, and the other end is fixed with disk；Motor passes through change
Frequency device is connected on power supply, and is connected by axis with disk, and the rotation of motor power output shaft is with the rotation of moving axis, the rotation of axis
Disc rotary is driven, disk keeps horizontal；
The PIV measuring system includes square-outside and round-inside sink, sheet laser, laser, CCD camera, synchroscope, computer, piece light
Source, laser, synchroscope, CCD camera, computer are sequentially connected；
The square-outside and round-inside sink keeps concentric with disk, and square-outside and round-inside sink includes circular channels and rectangular sink, round water
Slot is sticked to inside rectangular sink, and the height of circular channels is less than the height of rectangular sink, and circular channels, rectangular sink are transparent
Shape, the top of the rectangular sink are equipped with gap, and gap is circumscribed with overflow pipe, and overflow pipe one end and gap perforation connect
It connects, the other end is placed in reservoir top；Water is full of between rectangular sink and circular channels；
The circular copper pipe is fixed to each other with square-outside and round-inside sink, and circular copper pipe passes through square-outside and round-inside sink bottom surface, in foreign side
Circle sink is concentric, and is fixed to each other, and circular copper pipe is vertically arranged；It is stretched with hose perforation, the other end is connect circular copper pipe one end
In in the circular channels of square-outside and round-inside sink, the disk is placed in the circular channels of square-outside and round-inside sink, and is located at round copper
Above pipe；
The sheet laser is set to the side outside square-outside and round-inside sink, and CCD camera is set to the other side of square-outside and round-inside sink；
It is additionally provided with shelf, shelf is equipped with pedestal, and pedestal can be slided up and down along shelf；The circular copper pipe, square-outside and round-inside sink
It is placed on the pedestal on shelf；The quadrangle of the pedestal is equipped with pedestal circular hole, be equidistantly dispersed on shelf size and location with
The corresponding shelf circular hole of the pedestal circular hole of the quadrangle of pedestal；After pedestal lifting, the shelf on shelf is passed through by cylinder bolt
The pedestal circular hole of circular hole and pedestal quadrangle, is fixed on pedestal on shelf, determines that circular copper pipe exports to the difference of disk wall surface
Impact distance.
The shelf is equipped with slide bar, and pedestal is equipped with the slide opening to match with slide bar, and slide opening is placed on slide bar, pedestal edge
Slide bar slides up and down, and pedestal is driven to slide up and down along shelf；The shelf circular hole is set on slide bar.
The impulse sender is used to form the pulsing jet of different frequency.
Circular channels, the rectangular sink of the square-outside and round-inside sink are all made of organic glass manufacture, and rectangular sink and circle
It is full of water between shape sink, laser refraction bring error can be effectively reduced.
The bottom of rectangular sink is equipped with drain valve on the square-outside and round-inside sink, in the water inlet of drain valve and rectangular sink
Perforation, the water outlet of drain valve connect drainpipe, and the water outlet perforation of drainpipe one end and drain valve connects, and the other end is placed in storage
Drain valve is opened on pond top, and drainpipe and rectangular sink penetrate through, and the water in rectangular sink can be all successively through drain valve, row
Water pipe flows into reservoir；Drain valve is closed, water can not flow into reservoir through drain valve, drainpipe.
A method of the experimental provision of the pulsing jet impact rotation wall surface for particle image velocimetry tests the speed,
It is characterized in:
A, the water with trace particle is filled it up in reservoir and square-outside and round-inside sink；
B, start magnetic drive pump, the water in reservoir provides power by magnetic drive pump and flows through flowmeter and gate valve, and impulse generator will even
Continuous jet stream is converted to pulsing jet, by way of connection hose, projects after sufficiently developing in vertical circular copper pipe；
C, the water of circular copper pipe sprays to disk, forms the flow field of entire impact jet flow；
D, sheet laser is set to the side outside square-outside and round-inside sink, and CCD camera is set to the other side of square-outside and round-inside sink, laser
It is injected by sheet laser from square-outside and round-inside sink side, penetrates the middle section in entire impact jet flow, CCD camera is being cut perpendicular in
The other side of the square-outside and round-inside sink in face is shot；
E, the exposure behind CCD camera alignment jet stream middle section using trace particle in laser region acts on, and records twice laser grain
Image when son exposure, forms two width particle distribution pictures；
F, the directional velocity in jet stream middle section flow field and big is calculated in the displacement difference of two width pictures and time difference by trace particle
It is small；
Wherein, when the water through circular copper pipe sprays to disk, water is fallen into the circular channels of square-outside and round-inside sink by disk blocking, when
When water in circular channels covers circular channels, the water for covering circular channels flows into the side of square-outside and round-inside sink out of circular channels
Shape sink, when height of the water in rectangular sink reaches the height of gap, water flows into and gap perforation from gap
Overflow pipe, and it is back to from overflow pipe the reservoir of overflow pipe lower part.
By the switch degree of regulation gate valve, jet stream Reynolds number is adjusted；
By adjusting the voltage and frequency of frequency converter output, change motor speed, to adjust disc rotation speed；
The lifting of circular copper pipe and square-outside and round-inside sink is driven by pedestal, changes the impact that circular copper pipe exports to disk wall surface
Distance；
The pulsing jet of different frequency is formed by impulse generator.
In step a, the water with trace particle is filled it up in the circular channels of reservoir and square-outside and round-inside sink.
Structure of the invention rationally, manufacture be easy, it is easy to use, through the invention, whole device mainly by reservoir,
Magnetic drive pump, flowmeter, gate valve, impulse sender, connection hose, circular copper pipe, sheet laser, laser, synchroscope, computer,
Frequency converter, motor, axis, pedestal, shelf, square-outside and round-inside sink, disk, CCD camera composition.Jet stream is projected from circular copper pipe, punching
It hits on the disk wall surface of rotation, forms entire flow field.
One of important content of the present invention devises a kind of impulse generator, when controlling the opening time by it and closing
Between, to form the pulsing jet of different frequency, in order to eliminate pump pressure itself pulsation bring impulse disturbances, this experiment is adopted
It uses and basically will not produce the magnetic drive pump of pressure fluctuation as power source.The two of important content of the present invention, outside circular channels on set
Rectangular sink is full of water, can effectively reduce laser refraction bring error between rectangular sink and circular channels, in foreign side
Circle sink is all made of organic glass manufacture.The three of important content of the present invention place the pedestal dress of square-outside and round-inside sink on the top of the shelf
It moves freely, barrel band passes through corresponding circular hole firm banking on pedestal and shelf, can be right on pedestal and shelf by changing
The circular hole answered, the impact distance of change copper pipe jet exit to disk wall surface.
Beneficial outcomes of the invention are: this experimental provision is not only easy to operate, but also can comprehensively be ground by PIV experiment
Study carefully Reynolds number, impact distance, in wall surface revolving speed and pulse period stream field various flow characteristics affecting laws.
Detailed description of the invention
Fig. 1 is pulsing jet impact rotation wall surface experimental provision main view.
Fig. 2 is pulsing jet impact rotation wall surface experimental provision top view.
Fig. 3 is pulsing jet impact rotation wall surface experimental provision Local map.
Fig. 4 is structural schematic diagram at A in Fig. 3.
In figure: 1 reservoir, 2 magnetic drive pumps, 3 flowmeters, 4 gate valves, 5 impulse senders, 6 connection hoses, 7 circular copper pipes, 8
Sheet laser, 9 lasers, 10 synchroscopes, 11 computers, 12 frequency converters, 13 motors, 14 axis, 15 pedestals, 16 shelfs, in 17 foreign sides
Circle sink, 18 disks, 19 CCD cameras, 20 gaps, 21 drainpipes.
Specific embodiment
Below in conjunction with the attached drawing in present example, the technical solution in present example is described in detail.
A kind of experimental provision of the pulsing jet impact rotation wall surface for particle image velocimetry, including pulsing jet system
System, rotation wall surface system and PIV measuring system.
Pulsing jet system include reservoir 1, magnetic drive pump 2, flowmeter 3, gate valve 4, impulse sender 5, connection hose 6,
Circular copper pipe 7, reservoir 1 is successively through magnetic drive pump 2, flowmeter 3, gate valve 4, impulse sender 5, connection hose 6 and circular copper pipe 7
Perforation connection.
Rotating wall surface system includes frequency converter 12, motor 13, axis 14, disk 18, and frequency converter 12, motor 13 are fixed on branch
On support, and frequency converter 12 is electrically connected with motor 13, and one end of axis 14 and the power output shaft of motor 13 are fixed, the other end and circle
Disk 18 is fixed；Motor 13 is connected on power supply by frequency converter 12, and is connected by axis 14 with disk 18,13 power output of motor
The rotation of rotation of the rotation of axis with moving axis 14, axis 14 drives disk 18 to rotate, and disk 18 keeps horizontal.
PIV measuring system includes square-outside and round-inside sink 17, sheet laser 8, laser 9, CCD camera 19, synchroscope 10, calculates
Machine 11, sheet laser 8, laser 9, synchroscope 10, CCD camera 19, computer 11 are sequentially connected.
Square-outside and round-inside sink 17 keeps concentric with disk 18, and square-outside and round-inside sink 17 includes circular channels and rectangular sink,
Circular channels are sticked to inside rectangular sink, and the height of circular channels is less than the height of rectangular sink, and circular channels, rectangular sink are equal
For transparence, the top of rectangular sink is equipped with gap 20, and gap 20 is circumscribed with overflow pipe, overflow pipe one end and gap 20
Perforation connection, the other end are placed in 1 top of reservoir；Water is full of between rectangular sink and circular channels.
The circular copper pipe 7 is fixed to each other with square-outside and round-inside sink 17, and circular copper pipe 7 passes through 17 bottom of square-outside and round-inside sink
Face, it is concentric with square-outside and round-inside sink 17, and be fixed to each other, and circular copper pipe 7 is vertically arranged；7 one end of circular copper pipe with connect it is soft
Pipe 6 penetrates through, and the other end stretches in the circular channels of square-outside and round-inside sink 17, and the disk 18 is placed in the circle of square-outside and round-inside sink 17
In shape sink, and it is located at 7 top of circular copper pipe.
Sheet laser 8 is set to the side outside square-outside and round-inside sink 17, and CCD camera 19 is set to the another of square-outside and round-inside sink 17
Side.
It is additionally provided with shelf 16, pedestal 15 is set on shelf 16, pedestal 15 can be slided up and down along shelf 16；Circular copper pipe
7, square-outside and round-inside sink 17 is placed on the pedestal 15 on shelf 16；It is equipped with pedestal circular hole in the quadrangle of pedestal 15, on shelf 16
The size and location that is equally spaced shelf circular hole corresponding with the pedestal circular hole of the quadrangle of pedestal 15；After pedestal 15 is gone up and down, lead to
Shelf circular hole and pedestal 15 four jiao of pedestal circular hole of the cylinder bolt on shelf 16 are crossed, pedestal 15 is made to be fixed on shelf 16
On, determine that circular copper pipe 7 exports to the different impact distances of 18 wall surface of disk.
Further, shelf 16 is equipped with slide bar, and pedestal 15 is equipped with the slide opening to match with slide bar, and slide opening is placed on slide bar
On, pedestal 15 is slided up and down along slide bar, and pedestal 15 is driven to slide up and down along shelf 16；Shelf circular hole is set on slide bar.
The impulse sender 5 is used to form the pulsing jet of different frequency.
Circular channels, the rectangular sink of the square-outside and round-inside sink 17 be all made of organic glass manufacture, and rectangular sink with
It is full of water between circular channels, laser refraction bring error can be effectively reduced.
The bottom of rectangular sink is equipped with drain valve on square-outside and round-inside sink, passes through in the water inlet of drain valve and rectangular sink
Logical, the water outlet of drain valve connects drainpipe 21, and the water outlet perforation of 21 one end of drainpipe and drain valve connects, and the other end is placed in
Drain valve is opened on 1 top of reservoir, and drainpipe 21 and rectangular sink penetrate through, and the water in rectangular sink can be all successively through draining
Valve, drainpipe 21 flow into reservoir 1；Drain valve is closed, water can not flow into reservoir 1 through drain valve, drainpipe 21.
A method of the experimental provision of the pulsing jet impact rotation wall surface for particle image velocimetry tests the speed are as follows:
A, the water with trace particle is filled it up in reservoir 1 and square-outside and round-inside sink 17；
B, start magnetic drive pump 2, the water in reservoir 1 provides power by magnetic drive pump 2 and flows through flowmeter 3 and gate valve 4, impulse generator
Continuous jet stream is converted to pulsing jet by 5, by way of connection hose 6, is projected after sufficiently developing in vertical circular copper pipe 7；
C, the water of circular copper pipe 7 sprays to disk 18, forms the flow field of entire impact jet flow；
D, sheet laser 8 is set to the side outside square-outside and round-inside sink 17, and CCD camera 19 is set to the another of square-outside and round-inside sink 17
Side, laser are injected by sheet laser 8 from 17 side of square-outside and round-inside sink, and the middle section in entire impact jet flow, CCD camera 19 are penetrated
It is shot in the other side of the square-outside and round-inside sink 17 perpendicular to middle section；
E, the exposure that CCD camera 19 is directed at behind jet stream middle section using trace particle in laser region acts on, and records twice laser
Image when particle exposure forms two width particle distribution pictures；
F, the directional velocity in jet stream middle section flow field and big is calculated in the displacement difference of two width pictures and time difference by trace particle
It is small.
Wherein, when the water through circular copper pipe 7 sprays to disk 18, water is stopped the circle for falling into square-outside and round-inside sink 17 by disk 18
In shape sink, when the water in circular channels covers circular channels, the water for covering circular channels flows into foreign side out of circular channels
The rectangular sink of inner circle sink 17, when height of the water in rectangular sink reaches the height of gap 20, water is from gap 20
The overflow pipe penetrated through with gap 20 is flowed into, and is back to the reservoir 1 of overflow pipe lower part from overflow pipe.
By the switch degree of regulation gate valve 4, jet stream Reynolds number is adjusted；
The voltage and frequency exported by adjusting frequency converter 12, changes 13 revolving speed of motor, to adjust 18 revolving speed of disk；
The lifting of circular copper pipe 7 and square-outside and round-inside sink 17 is driven by pedestal 15, is changed circular copper pipe 7 and is exported to 18 wall of disk
The impact distance in face；
The pulsing jet of different frequency is formed by impulse generator 5.
In step a, the water with trace particle is filled it up in the circular channels of reservoir 1 and square-outside and round-inside sink 17.
In Fig. 1, this experimental provision is mainly made of pulsing jet system, rotation wall surface system and PIV measuring system.Arteries and veins
Fluidic system is rushed to include reservoir 1, magnetic drive pump 2, flowmeter 3, gate valve 4, impulse sender 5, connect hose 6, circular copper pipe 7,
Rotating wall surface system includes frequency converter 12, motor 13, axis 14, disk 18, and PIV velocity-measuring system includes square-outside and round-inside sink 17, piece
Light source 8, laser 9, CCD camera 19, synchroscope 10, computer 11.Other than three digest journals, this experimental provision further includes one
Shelf 16 with Liftable base 15.
In pulsing jet system, the liquid in reservoir 1 provides power by magnetic drive pump 2 and flows through flowmeter 3 and gate valve 4,
Solid jet is converted to pulsing jet by impulse generator 5, by way of connection hose 6, is sufficiently developed in vertical circular copper pipe 7
After project.Circular copper pipe 7 passes through 17 bottom surface of square-outside and round-inside sink, concentric with square-outside and round-inside sink 17, and is fixed to each other.
In rotation wall surface system, motor 13 is connected on power supply by frequency converter 12, and passes through axis 14 and 18 phase of disk
Even.Disk 18 keeps horizontal and keeps concentric with square-outside and round-inside sink 17.
In PIV velocity-measuring system, laser is injected by sheet laser 8 from 17 side of square-outside and round-inside sink, is penetrated and is entirely being impacted
The middle section of jet stream, CCD camera 19 are shot in the other side of the square-outside and round-inside sink 17 perpendicular to middle section (such as Fig. 2 institute
Show).Circular channels are sticked to inside rectangular sink, form a square-outside and round-inside sink 17, entirety is manufactured by transparent organic glass.
In Fig. 3, circular copper pipe 7 is fixed to each other with square-outside and round-inside sink 17, and being placed in can be freely lifted on shelf 16
Pedestal 15 on.Size and location shelf circle corresponding with 15 4 jiaos of pedestal of pedestal circular hole is equidistantly dispersed on shelf 16
Hole；After pedestal lifting, the circular hole (shelf circular hole, pedestal circular hole) on shelf with pedestal quadrangle is passed through by cylinder bolt, it is fixed
The position of pedestal determines that circular copper pipe 7 exports to the different impact distances of 18 wall surface of disk.
A kind of experimental provision of pulsing jet impact rotation wall surface for particle image velocimetry of the present invention makes
With method, comprising the following steps:
A. each experimental provision is installed to designated position by above-mentioned mounting means.
B. the water with trace particle is filled it up in reservoir and square-outside and round-inside sink, is operated magnetic drive pump, is drained entire system
Air in system.
C. after whole system is stable, required measurement condition is reached by the adjusting of equipment each in experimental provision.
D. PIV equipment is opened, the position and CCD camera visual angle of each component are adjusted, operation computer is shot.
Variable parameter of the invention:
1. Reynolds number: by the switch degree of control valve, adjusting jet stream Reynolds number；
2. wall surface revolving speed: by adjusting the voltage and frequency of frequency converter output, changing motor speed；
3. impact distance: driving the lifting of circular copper pipe and square-outside and round-inside sink by pedestal, change circular copper pipe and export to circle
The impact distance of disk wall surface；
4. the pulse period: block device is controlled by impulse generator unlatches and closes the time, to form different frequency
Pulsing jet.
Above embodiment is the description of the invention, is not limitation of the invention, it is possible to understand that is not departing from this hair
A variety of change, modification, replacement and modification, guarantor of the invention can be carried out to these embodiments in the case where bright principle and spirit
Shield range is defined by the appended claims and the equivalents thereof.
Claims (8)
1. a kind of experimental provision of the pulsing jet impact rotation wall surface for particle image velocimetry, it is characterized in that: including pulse
Fluidic system, rotation wall surface system and PIV measuring system；
The pulsing jet system include reservoir (1), magnetic drive pump (2), flowmeter (3), gate valve (4), impulse sender (5),
Hose (6), circular copper pipe (7) are connected, reservoir (1) is successively through magnetic drive pump (2), flowmeter (3), gate valve (4), impulse sender
(5), connection hose (6) and circular copper pipe (7) perforation connect；
The rotation wall surface system includes frequency converter (12), motor (13), axis (14), disk (18), frequency converter (12), motor
(13) it is fixed on support frame, and frequency converter (12) is electrically connected with motor (13), one end and motor (13) of the axis (14)
Power output shaft is fixed, and the other end and disk (18) are fixed；Motor (13) is connected on power supply by frequency converter (12), and is passed through
Axis (14) is connected with disk (18), the rotation of the rotation with moving axis (14) of motor (13) power output shaft, the rotation band of axis (14)
Dynamic disk (18) rotation, disk (18) keep horizontal；
The PIV measuring system includes square-outside and round-inside sink (17), sheet laser (8), laser (9), CCD camera (19), synchronizes
Instrument (10), computer (11), sheet laser (8), laser (9), synchroscope (10), CCD camera (19), computer (11) successively connect
It connects；
The square-outside and round-inside sink (17) and disk (18) keep concentric, and square-outside and round-inside sink (17) includes circular channels and rectangular
Sink, circular channels are sticked to inside rectangular sink, and the height of circular channels is less than the height of rectangular sink, circular channels, rectangular
Sink is transparence, and the top of the rectangular sink is equipped with gap (20), and gap (20) is circumscribed with overflow pipe, overflow pipe
One end and gap (20) perforation connect, and the other end is placed in reservoir (1) top；
The circular copper pipe (7) is fixed to each other with square-outside and round-inside sink (17), and circular copper pipe (7) passes through square-outside and round-inside sink (17)
Bottom surface, it is concentric with square-outside and round-inside sink (17), and be fixed to each other, and circular copper pipe (7) is vertically arranged；Circular copper pipe (7) one end
It is penetrated through with hose (6) are connect, the other end stretches in the circular channels of square-outside and round-inside sink (17), and the disk (18) is placed in foreign side
In the circular channels of inner circle sink (17), and it is located above circular copper pipe (7)；
The sheet laser (8) is set to the side of square-outside and round-inside sink (17) outside, and CCD camera (19) is set to square-outside and round-inside sink
(17) the other side；
It is additionally provided with shelf (16), shelf (16) is equipped with pedestal (15), and pedestal (15) can be slided up and down along shelf (16)；The circle
Shape copper pipe (7), square-outside and round-inside sink (17) are placed on the pedestal (15) on shelf (16)；The quadrangle of the pedestal (15) is equipped with
Pedestal circular hole is equidistantly dispersed with size and location shelf corresponding with the pedestal circular hole of quadrangle of pedestal (15) on shelf (16)
Circular hole；After pedestal (15) lifting, the shelf circular hole on shelf (16) and the pedestal of pedestal (15) quadrangle are passed through by cylinder bolt
Circular hole is fixed on pedestal (15) on shelf (16), determine circular copper pipe (7) export to the different impacts of disk (18) wall surface away from
From.
2. a kind of experiment dress of pulsing jet impact rotation wall surface for particle image velocimetry according to claim 1
It sets, it is characterized in that: shelf (16) is equipped with slide bar, pedestal (15) is equipped with the slide opening to match with slide bar, and slide opening is placed on slide bar
On, pedestal (15) is slided up and down along slide bar, and pedestal (15) is driven to slide up and down along shelf (16)；The shelf circular hole is set to cunning
On bar.
3. a kind of experiment dress of pulsing jet impact rotation wall surface for particle image velocimetry according to claim 1
It sets, it is characterized in that: the impulse sender (5) is used to form the pulsing jet of different frequency.
4. a kind of experiment dress of pulsing jet impact rotation wall surface for particle image velocimetry according to claim 1
It sets, it is characterized in that: the circular channels of the square-outside and round-inside sink (17), rectangular sink are all made of organic glass manufacture, and rectangular
It is full of water between sink and circular channels, laser refraction bring error can be effectively reduced.
5. a kind of experiment dress of pulsing jet impact rotation wall surface for particle image velocimetry according to claim 1
It sets, it is characterized in that: the bottom of rectangular sink is equipped with drain valve, the water inlet of drain valve and side on the square-outside and round-inside sink (17)
The water outlet of perforation in shape sink, drain valve connects drainpipe (21), and the water outlet of drainpipe (21) one end and drain valve penetrates through
Connection, the other end are placed in reservoir (1) top, open drain valve, drainpipe (21) and rectangular sink penetrate through, in rectangular sink
Water all successively can flow into reservoir (1) through drain valve, drainpipe (21)；Drain valve is closed, water can not be through drain valve, drainpipe
(21) reservoir (1) is flowed into.
6. a kind of pulsing jet impact for particle image velocimetry described in -5 any one claims according to claim 1
The method that the experimental provision of rotation wall surface tests the speed, it is characterized in that:
A, in reservoir (1) and square-outside and round-inside sink (17) is inner fills it up with the water with trace particle；
B, starting magnetic drive pump (2), the water in reservoir (1) provides power by magnetic drive pump (2) and flows through flowmeter (3) and gate valve (4),
Continuous jet stream is converted to pulsing jet by impulse generator (5), by way of connection hose (6), in vertical circular copper pipe (7)
Sufficiently projected after development；
C, the water of circular copper pipe (7) sprays to disk (18), forms the flow field of entire impact jet flow；
D, sheet laser (8) is set to the side of square-outside and round-inside sink (17) outside, and CCD camera (19) is set to square-outside and round-inside sink
(17) the other side, laser are injected from square-outside and round-inside sink (17) side by sheet laser (8), are penetrated in entire impact jet flow
Section, CCD camera (19) are shot in the other side of the square-outside and round-inside sink (17) perpendicular to middle section；
E, the exposure behind CCD camera (19) alignment jet stream middle section using trace particle in laser region acts on, and record twice swash
Image when light particle exposes forms two width particle distribution pictures；
F, the directional velocity in jet stream middle section flow field and big is calculated in the displacement difference of two width pictures and time difference by trace particle
It is small；
Wherein, when the water through circular copper pipe (7) sprays to disk (18), water is stopped to fall into square-outside and round-inside sink (17) by disk (18)
Circular channels in, when the water in circular channels covers circular channels, the water for covering circular channels is flowed into out of circular channels
The rectangular sink of square-outside and round-inside sink (17), when height of the water in rectangular sink reaches the height of gap (20), water from
Gap (20) flows into the overflow pipe with gap (20) perforation, and the reservoir (1) of overflow pipe lower part is back to from overflow pipe.
7. a kind of experimental provision of pulsing jet impact rotation wall surface for particle image velocimetry according to claim 6
The method to test the speed, it is characterized in that:
By the switch degree of regulation gate valve (4), jet stream Reynolds number is adjusted；
By adjusting the voltage and frequency of frequency converter (12) output, change motor (13) revolving speed, to adjust disk (18) revolving speed；
The lifting of circular copper pipe (7) and square-outside and round-inside sink (17) is driven by pedestal (15), is changed circular copper pipe (7) and is exported to
The impact distance of disk (18) wall surface；
The pulsing jet of different frequency is formed by impulse generator (5).
8. a kind of experimental provision of pulsing jet impact rotation wall surface for particle image velocimetry according to claim 6
The method to test the speed, it is characterized in that: being filled it up in the circular channels of reservoir (1) and square-outside and round-inside sink (17) in step a
Water with trace particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340176.4A CN109974972B (en) | 2019-04-25 | 2019-04-25 | Experimental device for pulse jet impact rotation wall surface for particle image velocimetry and velocimetry method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340176.4A CN109974972B (en) | 2019-04-25 | 2019-04-25 | Experimental device for pulse jet impact rotation wall surface for particle image velocimetry and velocimetry method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109974972A true CN109974972A (en) | 2019-07-05 |
| CN109974972B CN109974972B (en) | 2024-03-29 |
Family
ID=67086305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910340176.4A Active CN109974972B (en) | 2019-04-25 | 2019-04-25 | Experimental device for pulse jet impact rotation wall surface for particle image velocimetry and velocimetry method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109974972B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631944A (en) * | 2019-09-27 | 2019-12-31 | 国家电网有限公司 | Underwater material scouring three-dimensional effect experimental device and method |
| CN112160715A (en) * | 2020-09-28 | 2021-01-01 | 中国石油大学(华东) | Instantaneous high-flow pulse jet experiment system and experiment method thereof |
| CN112768098A (en) * | 2020-12-30 | 2021-05-07 | 西安交通大学 | Experimental device and method for researching jet impact characteristics of fast reactor core outlet |
| CN118067358A (en) * | 2024-04-17 | 2024-05-24 | 北京理工大学长三角研究院(嘉兴) | Measuring device for micron-sized asymmetric air film in inclined impact rotary wall surface of liquid drop |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060002862A1 (en) * | 2002-12-17 | 2006-01-05 | Medimmune Vaccines, Inc. | High pressure spray-dry of bioactive materials |
| CN206832296U (en) * | 2017-06-16 | 2018-01-02 | 中冶赛迪工程技术股份有限公司 | A kind of gas jet characteristic comprehensive measurement device |
| CN109612682A (en) * | 2018-12-24 | 2019-04-12 | 上海理工大学 | A kind of jet stream movement measuring device in scaled model based on PIV |
| CN209570321U (en) * | 2019-04-25 | 2019-11-01 | 扬州大学 | The experimental provision of pulsing jet impact rotation wall surface for particle image velocimetry |
-
2019
- 2019-04-25 CN CN201910340176.4A patent/CN109974972B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060002862A1 (en) * | 2002-12-17 | 2006-01-05 | Medimmune Vaccines, Inc. | High pressure spray-dry of bioactive materials |
| CN206832296U (en) * | 2017-06-16 | 2018-01-02 | 中冶赛迪工程技术股份有限公司 | A kind of gas jet characteristic comprehensive measurement device |
| CN109612682A (en) * | 2018-12-24 | 2019-04-12 | 上海理工大学 | A kind of jet stream movement measuring device in scaled model based on PIV |
| CN209570321U (en) * | 2019-04-25 | 2019-11-01 | 扬州大学 | The experimental provision of pulsing jet impact rotation wall surface for particle image velocimetry |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631944A (en) * | 2019-09-27 | 2019-12-31 | 国家电网有限公司 | Underwater material scouring three-dimensional effect experimental device and method |
| CN110631944B (en) * | 2019-09-27 | 2022-08-05 | 国家电网有限公司 | Underwater material scouring three-dimensional effect experimental device and method |
| CN112160715A (en) * | 2020-09-28 | 2021-01-01 | 中国石油大学(华东) | Instantaneous high-flow pulse jet experiment system and experiment method thereof |
| CN112160715B (en) * | 2020-09-28 | 2022-07-26 | 中国石油大学(华东) | Instantaneous high-flow pulse jet experiment system and experiment method thereof |
| CN112768098A (en) * | 2020-12-30 | 2021-05-07 | 西安交通大学 | Experimental device and method for researching jet impact characteristics of fast reactor core outlet |
| CN112768098B (en) * | 2020-12-30 | 2022-12-27 | 西安交通大学 | Experimental device and method for researching jet impact characteristics of reactor core outlet of fast reactor |
| CN118067358A (en) * | 2024-04-17 | 2024-05-24 | 北京理工大学长三角研究院(嘉兴) | Measuring device for micron-sized asymmetric air film in inclined impact rotary wall surface of liquid drop |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109974972B (en) | 2024-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109974972A (en) | A kind of experimental provision and its speed-measuring method of the pulsing jet impact rotation wall surface for particle image velocimetry | |
| CN209570321U (en) | The experimental provision of pulsing jet impact rotation wall surface for particle image velocimetry | |
| Liang et al. | An experimental investigation of swirling jets | |
| Mason et al. | Pulsed wall jet simulation of a stationary thunderstorm downburst, Part A: Physical structure and flow field characterization | |
| CN103047124B (en) | Multifunction test device is measured in centrifugal pump external characteristics and internal flow | |
| CN101852814B (en) | Whole-field testing method for internal flow of drip emitter maze flow channel | |
| Eisele et al. | Flow analysis in a pump diffuser—part 1: LDA and PTV measurements of the unsteady flow | |
| CN106370885A (en) | Apparatus and method for measuring flow field of spinning disc reactor based on PIV (particle image velocity) technology | |
| Visser et al. | Fluid flow in a rotating low-specific-speed centrifugal impeller passage | |
| CN110455494A (en) | A kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision and its method | |
| CN109974969B (en) | Pulse type submerged impact jet flow experimental device for particle image velocimetry and velocimetry method thereof | |
| Montazerin et al. | Developments in turbomachinery flow: Forward curved centrifugal fans | |
| Kang et al. | Geometry and motion characteristics of bubbles released in liquid cross flow | |
| CN109406566A (en) | Nano-fluid impact jet flow fluid interchange characteristic and Erosive Properties experimental provision | |
| Wu | A PIV study of co-rotating disks flow in a fixed cylindrical enclosure | |
| US11624678B1 (en) | Tank wave-current generation system with rear-mounted outlet | |
| Chandra et al. | Study of gas/liquid behaviour within an aeroengine bearing chamber | |
| Fonseca et al. | Particle image velocimetry in the impeller of a centrifugal pump: A POD-based analysis | |
| CN113049219B (en) | Experimental device for simulating cavitation vortex strip form | |
| CN218445553U (en) | Device for detecting building space airflow field | |
| Ferrara | Wet gas compressors-stability and range | |
| Dupoiron | Experimental Study of Gas-Liquid Flow Through a Multi-Stage, Mixed-Flow Electric Submersible Pump | |
| Erne et al. | Simulation and experimental investigation of the stay vane channel flow in a reversible pump turbine at off-design conditions | |
| RU202408U1 (en) | STAND FOR SIMULATION OF FLOW REGIMES IN THE SUCTION PIPE OF A HYDRAULIC TURBINE | |
| RU177848U1 (en) | Flow viscometer |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |