CN103543098B - The shear rheology device that air-flow becomes characteristic research is wrapped up in for high-speed shadowgraph technique - Google Patents
The shear rheology device that air-flow becomes characteristic research is wrapped up in for high-speed shadowgraph technique Download PDFInfo
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Abstract
The invention discloses a kind of shear rheology device wrapping up in air-flow change characteristic research for high-speed shadowgraph technique.This stream becomes device and comprises air compartment, described air compartment is connected with support, propulsion system, wind conveying pipe line, described air compartment air outlet end face is connected with the first air distribution plate, described first air distribution plate is connected with the annular loading groove surrounded by urceolus, inner core and the second air distribution plate, be provided with annular cover plate in described annular loading groove, this device is also provided with LOAD CELLS, torque sensor, speed probe and camera head.This stream become device by sensor institute monitor sample wrap up in gas down cut stream change quantitative data, realize Quantitative study sample under different air quantity and rotating speed being sheared to rheological characteristics, for the further research of high-speed shadowgraph technique dynamics provides important physical mechanics parameter, for grasping high-speed shadowgraph technique kinetics mechanism further, there is potential huge expulsive force, being adapted at field of experiment equipment and applying.
Description
Technical field
The present invention relates to field of experiment equipment, be specifically related to a kind of shear rheology device wrapping up in air-flow change characteristic research for high-speed shadowgraph technique.
Background technology
Be different from conventional low speed short range landslide, abnormal flow feature is often shown in high-speed shadowgraph technique motion process, as: at the overall suitable cheuch of gliding mass in the high speed motions of downstream, when running into barrier, often can move forward by cut-through thing as fluid.This abnormal flow feature in high-speed shadowgraph technique motion process is that it can realize the key of extra long distance motion, is the most important thing of high-speed shadowgraph technique movement mechanism research, since being also a nearly century, and the Important Problems that Chinese scholars is paid close attention to always.Hydrodynamic calculations, as the important means of test fluid flow rheological characteristics, is widely applied, and achieves plentiful and substantial achievement in research in the fields such as aerodynamic studies, the research of rubble flow rheological characteristics, hydraulic research; Rotary rheometer, as the important device of Study of Fluid rheological characteristics, has also obtained and has applied more widely in the research of rubble flow rheological characteristics.But, up to now, use the achievement of clastic flow rheological characteristics in rotary rheometer research high-speed shadowgraph technique motion process very limited, especially in high-speed shadowgraph technique motion process, clastic flow is wrapped up in the research of gas rheological characteristics nobody is related to especially, in the high-speed cruising process of gliding mass, it is the important physical mechanical function process that can not be ignored to the high speed compression of leading edge and ambient air with sweeping along, carry out the research wrapping up in gas rheological characteristics in high-speed shadowgraph technique motion process, understand clastic flow and entrain into the shear rheology feature under airflow influence, significant for the kinetics function mechanism more in depth understood in high-speed shadowgraph technique motion process.Study the gas rheological characteristics of wrapping up in high-speed shadowgraph technique motion process, to analyze the shear rheology characteristic of clastic flow under different strength value, the kinetics mechanism that can disclose high-speed shadowgraph technique further provides reference.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of sample that can realize and is entraining into the shear rheology device wrapping up in air-flow change characteristic research for high-speed shadowgraph technique of airflow function down cut rheological characteristics Quantitative study.
The present invention solves the problems of the technologies described above adopted technical scheme: this is used for high-speed shadowgraph technique and wraps up in the shear rheology device that air-flow becomes characteristic research, comprise blower fan, wind conveying pipe line, support, propulsion system, air compartment, first air distribution plate, second air distribution plate, inner core, urceolus, LOAD CELLS, torque sensor, speed probe, described propulsion system are connected with the first gear be arranged on air compartment, described air compartment is by the rack-mount side of bearing, described air compartment is connected with blower fan by wind conveying pipe line, the air outlet end face of described air compartment is provided with ring flange, described first air distribution plate covers on ring flange, described urceolus to be arranged on the first air distribution plate and to connect as one with the first air distribution plate and ring flange, described second air distribution plate is arranged in urceolus, the periphery of described second air distribution plate and the inwall of urceolus suitable, LOAD CELLS is provided with between described first air distribution plate and the second air distribution plate, described inner core is fixedly connected on the second air distribution plate, distance between described urceolus and inner core is 70-90mm, described inner tank theca, the space that outer tube inner wall and the second air distribution plate surround forms annular loading groove, the annular cover plate suitable with annular loading groove is provided with in described annular loading groove, described annular cover plate is connected with torque sensor by connecting link, described propulsion system are connected with speed probe, described camera head is arranged on outside annular loading groove by the cross bar be arranged on ring flange.
Further, described propulsion system comprise motor, speed reduction unit and are arranged on the second gear on reducer output shaft, the first gears meshing on described second gear and air compartment.
Further, the air intake vent of described air compartment is arranged on bottom air compartment, its center and the first air distribution plate be centrally located at same axis, described air intake vent place is also provided with Gas inlet tube, and described first gear is fixed on the outer wall of Gas inlet tube.
Be further, described first air distribution plate is provided with the first annular stomatal band, the profile of described first annular stomatal band is corresponding with annular loading groove size, the pore evenly arranged in described first annular stomatal band arranges in equilateral triangle mode, described second air distribution plate is provided with the second circular air hole band that stomatal band annular with first is corresponding, the center of described first annular stomatal band and the second circular air hole band be centrally located at same axis.
Further, the second circular air hole band upper surface of described second air distribution plate is provided with anti-slipping through the net, and described leakproof is also provided with rough first impermeable barrier on the net.
Further, described annular cover plate is provided with multiple loss hole, its lower surface is provided with rough second impermeable barrier.
Further, described annular loading groove is made up of the material of transparent material, and its altitude range is 270-300mm.
Further, described camera head is at least 1 high-speed camera.
Further, described connecting link comprises at least 2 expansion links upwards extended being fixed on annular cover plate upper surface and the crossbeam being arranged on the expansion link other end, and described torque sensor is arranged in the middle part of crossbeam.
Further, described wind conveying pipe line is provided with spinner-type flowmeter.
Beneficial effect of the present invention: the air compartment that this stream becomes described in device is connected with blower fan by wind conveying pipe line, achieve air-flow from blower fan to the transmission of air compartment, described propulsion system and support are connected with the first gear that air compartment is arranged and bearing respectively, and air compartment can be rotated freely under the effect of propulsion system.In experimentation, under LOAD CELLS can obtain different air quantity and different rotating speeds, the weight change situation of sample in annular loading groove; Under different air quantity and different rotating speeds can being obtained by torque sensor, the torque value that the sample skin granulate in annular loading groove produces annular cover plate; Propulsion system then can be obtained at not real-time rotate speed in the same time by speed probe; Just sample can be obtained at the quantitative data wrapping up in the change of gas down cut stream by these sensors, realize Quantitative study sample under different air quantity and rotating speed being sheared to rheological characteristics, for the further research of high-speed shadowgraph technique dynamics provides important physical mechanics parameter, for grasping high-speed shadowgraph technique kinetics mechanism further, there is potential huge expulsive force.
Accompanying drawing explanation
Fig. 1 is that the present invention wraps up in for high-speed shadowgraph technique the structural representation that air-flow becomes the shear rheology device of characteristic research;
Fig. 2 is the planar structure schematic diagram of the present invention first air distribution plate;
Fig. 3 is the planar structure schematic diagram of the present invention second air distribution plate;
Fig. 4 is the planar structure schematic diagram of annular cover plate of the present invention;
Description of reference numerals: blower fan 1, wind conveying pipe line 2, spinner-type flowmeter 201, support 3, propulsion system 4, motor 401, speed reduction unit 402, second gear 403, air compartment 5, first gear 501, bearing 502, ring flange 503, first air distribution plate 6, first annular stomatal band 601, pore 602, second air distribution plate 7, second circular air hole band 701, prevent slipping through the net 711, first impermeable barrier 721, inner core 8, urceolus 9, annular loading groove 10, torque sensor 11, speed probe 12, annular cover plate 13, loss hole 1301, second impermeable barrier 1302, connecting link 14, expansion link 1401, crossbeam 1402, cross bar 15, camera head 16, LOAD CELLS 17, Gas inlet tube 18, air intake vent 1801.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
As Fig. 1, 2, 3, shown in 4, this is used for high-speed shadowgraph technique and wraps up in the rotary shear rheology device that air-flow becomes characteristic research, comprise blower fan 1, wind conveying pipe line 2, support 3, propulsion system 4, air compartment 5, first air distribution plate 6, second air distribution plate 7, inner core 8, urceolus 9, LOAD CELLS 17, torque sensor 11, speed probe 12, described propulsion system 4 are connected with the first gear 501 be arranged on air compartment 5, described air compartment 5 is arranged on above support 3 by bearing 502, described air compartment 5 is connected with blower fan 1 by wind conveying pipe line 2, the air outlet end face of described air compartment 5 is provided with ring flange 503, described first air distribution plate 6 covers on ring flange 503, described urceolus 9 to be arranged on the first air distribution plate 6 and to connect as one with the first air distribution plate 6 and ring flange 503, described second air distribution plate 7 is arranged in urceolus 9, the periphery of described second air distribution plate 7 and the inwall of urceolus 9 suitable, LOAD CELLS 17 is provided with between described first air distribution plate 6 and the second air distribution plate 7, described inner core 8 is fixedly connected on the second air distribution plate 7, distance between described urceolus 9 and inner core 8 is 70-90mm, described inner core 8 outer wall, the space that urceolus 9 inwall and the second air distribution plate 7 surround forms annular loading groove 10, the annular cover plate 13 suitable with annular loading groove 10 is provided with in described annular loading groove 10, described annular cover plate 13 is connected with torque sensor 11 by connecting link 14, described propulsion system 4 are connected with speed probe 12, described camera head 16 is arranged on outside annular loading groove 10 by the cross bar 15 be arranged on ring flange 503.
Described propulsion system 4 can adopt pneumatic or motor 401 to drive, in order to reduce compressed air unit, to economize on the use of funds input, as preferably, propulsion system 4 of the present invention comprise motor 401, speed reduction unit 402, described propulsion system 4 are connected with blower fan 1, its connected mode can adopt belt, chain or gear, in order to reduce installing space, improve ratio of gear, as preferably, the connected mode that the present invention adopts is that gear connects, the output shaft of described speed reduction unit 402 is provided with the second gear 403, described second gear 403 engages with the first gear 501, form interaction force system, ensure that air compartment 5 power demand when rotated.Better rotate for the ease of air compartment 5, described air compartment 5 is arranged on above support 3, is provided with bearing 502 between described air compartment 5 and support 3.Better act on sample to make air-flow, the present invention is also provided with the first air distribution plate 6, second air distribution plate 7, urceolus 9, inner core 8, described urceolus 9 is arranged on the first air distribution plate 6, described second air distribution plate 7 is arranged in urceolus 9, the periphery of described second air distribution plate 7 and the inwall of urceolus 9 suitable, gap between described second air distribution plate 7 and urceolus 9 is less than the external dimensions of sample, second air distribution plate 7 sample can not be made to drop from the gap between the second air distribution plate 7 and urceolus 9 while can be moved up and down in urceolus 9, ensure that the normal work of LOAD CELLS 17 between the first air distribution plate 6 and the second air distribution plate 7 of being arranged on and the degree of accuracy of measurement, described inner core 8 is fixedly connected on the second air distribution plate 7, its fixed form can connect for bolt or paste, in order to ensure sealing, be convenient to processing, as preferably, connected mode of the present invention is for pasting, in order to the position of better fixing inner core 8 and the stability pasted, described second air distribution plate 7 can also arrange the groove for placing inner core 8, described inner core 8 is placed into after in groove and pastes with organic glass gluing.Attractive in appearance according to the size of air quantity, the weight of required sample and whole equipment, distance between described urceolus 9 and inner core 8 is 70-90mm, as preferably, distance between urceolus 9 of the present invention and inner core 8 is 75mm, the space that described inner core 8 outer wall, urceolus 9 inwall and the second air distribution plate 7 surround forms annular loading groove 10, and sample is placed in annular loading groove 10 as on the second air distribution plate 7 of base plate.Rotation status is in order to what ensure the experimentation of sample, described air compartment 5, first air distribution plate 6 and urceolus 9 connect as one, its connected mode can be welding, bonding or bolt connection, for the ease of dismounting, cleaning, as preferably, the present invention connected mode be bolt connect, the air outlet of described air compartment 5 is provided with ring flange 503, described first air distribution plate 6 covers on ring flange 503, and described urceolus 9 is arranged on to be bolted on the first air distribution plate 6 and with the first air distribution plate 6 and ring flange 503 and is integrated.The annular cover plate 13 suitable with annular loading groove 10 is provided with in described annular loading groove 10, described annular cover plate 13 is connected with torque sensor 11 by connecting link 14, gap between described annular cover plate 13 and urceolus 9 inwall and inner core 8 outer wall is less than the outside minimum dimension of sample, ensure can not shed in the motion process of sample annular loading groove 10, guarantee the accuracy of Monitoring Data.In order to observe the change of sample in annular loading groove 10 better, the present invention also comprises camera head 16, described camera head 16 is arranged on outside annular loading groove 10 by the cross bar 15 be arranged on ring flange 503, the camera lens opposed annular loading groove 10 of described camera head 16 remains static all the time, ensure that photographic effect.
The air intake vent 1801 of described air compartment 5 can be arranged on middle part or the bottom of air compartment 5, directly act on the first annular stomatal band 601 of the first air distribution plate 6 to prevent air-flow, cause the instability of air-flow, as preferably, the air intake vent 1801 of air compartment 5 of the present invention is arranged on bottom air compartment 5, its center and the first air distribution plate 6 be centrally located at same axis, like this when air-flow is after air compartment 5 air intake vent 1801 enters air compartment 5, to directly rush at the central area of the first air distribution plate 6 of air compartment 5 air outlet end face, due to the setting of the first annular stomatal band 601, within the scope of this central area, also pore-free 602 distributes, air-flow is after being obstructed in this region, turn to gradually, to periphery loss, after close stablizing, along the pore 602 upwards loss on the first annular stomatal band 601 on the first air distribution plate 6, effectively prevent the first annular stomatal band 601 that air-flow directly rushes at the first air distribution plate 6, and cause the extremely uneven impact to sample of air flow method, cause the randomness of data.Owing to the second air distribution plate 7 being provided with the second circular air hole band 701 corresponding with the first air distribution plate 6, simultaneously the center of the first annular stomatal band 601 and the second circular air hole band 701 be centrally located at same axis, ensure that air-flow can pass through the first annular stomatal band 601 and the second circular air hole band 701 enters sample inside, sample is moved under airflow function.
Engage with the second gear 403 for the ease of the first gear 501, reduce installing space, ensure that air compartment 5 rotates steady, air intake vent 1801 place of described air compartment 5 is also provided with Gas inlet tube 18, and described first gear 501 is fixed on the outer wall of Gas inlet tube 18 simultaneously.
Drop from the second circular air hole band 701 the second air distribution plate 7 to prevent sample, affect the accuracy of data monitoring, described second circular air hole band 701 upper surface is provided with to be prevented slipping through the net 711, described anti-slipping through the net 711 can adopt plastics or metal, in order to improve its wearing quality, as preferably, the material that the present invention selects is metal, described metal can be copper, aluminium or iron, and in order to cost-saving, what the present invention selected is iron wire.The free loss of air-flow is entrained into for realizing sample inside, annular cover plate 13 is provided with multiple loss hole 1301, for improving the roughness of sample bottom surface, to simulate the up-and-down feature of clastic flow actual motion path, described anti-slipping through the net on 711 is also provided with rough first impermeable barrier 721, for increasing the interaction force in experimentation between annular cover plate 13 and sample, described annular cover plate 13 lower surface is provided with rough second impermeable barrier 1302.In order to simulate actual scene, as preferably, described first impermeable barrier 721 and the second impermeable barrier 1302 are made up of quartz sand particle.
In order to ensure that camera head 16 better can observe the change of sample in annular loading groove 10, described annular loading groove 10 is made up of the material of transparent material, as preferably, material of the present invention is organic glass, according to theoretical calculation analysis, again in conjunction with the height of current existing blower fan 1 specification and whole equipment, the altitude range of described annular loading groove 10 is 270-330mm, and the height selected by the present invention is 300mm.
In order to observe the movement locus of sample better, camera head 16 of the present invention can be video camera or camera, and because sample is less, movement velocity is fast, movement locus is irregular, as preferably, camera head 16 of the present invention is high-speed camera.In order to better observe the sample motion of zones of different, described high-speed camera is at least 1, and as preferably, high-speed camera of the present invention is 2, and two high-speed cameras are individually fixed in the end of two cross bars 15 be arranged on ring flange 503.
Because the sample weight loading annular loading groove 10 is different, its height putting into annular loading groove 10 is also different, and annular cover plate 13 needs to cover sample upper surface, can move up and down in annular loading groove 10 to better make annular cover plate 13, connecting link 14 of the present invention comprises at least 2 expansion links upwards extended 1401 being fixed on annular cover plate 13 upper surface and the crossbeam 1402 being arranged on expansion link 1401 other end, in order to ensure the uniform force of torque sensor 11, described expansion link 1401 is distributed on annular cover plate 13, described torque sensor 11 is arranged in the middle part of crossbeam 1402, because sample is less at the torque value of test, for the ease of installing, expansion link 1401 of the present invention is 4.
Under observing different air quantity and wind speed effect, the characteristics of motion of experimental sample, described wind conveying pipe line 2 is provided with spinner-type flowmeter 201, and knows that the maximum wind supply quantity that required sample of testing enters fluidized state is about 120m by theory calculate
3/ h, described spinner-type flowmeter 201 is LZB-25(measurement range 1.6-16m preferably
3/ h) and LZB-50(16-160m
3/ h) spinner-type flowmeter 201 of two different measuring scope, thus realize airshed and increase to 120m from zero
3/ h changes.
Choosing of this torque sensor 11 is determined according to theory calculate and simple experiment method, under the prerequisite meeting range area requirement, turn avoid because blindly choosing relatively large journey person, causing the situation that data precision reduces, what torque sensor 11 of the present invention adopted is range is 20Nm; What described LOAD CELLS 17 adopted is that single-point is subject to pressure type measuring method, upper load is concentrated on center sensor raised points by this pressurized mode, ensure that the degree of accuracy of measured value, in addition, for the selection of this transducer range then to intend carrying out in each group of experiment the general assembly (TW) such as sample and the second air distribution plate 7 for according to choosing, its range is 20kg; In order to ensure in real-time degree of accuracy, the reliability of measuring air compartment 5 rotating speed, the tooth of magnetic conductor projection or recessed groove, and be transformed into an alternating voltage signal, process through internal precision circuit exports good square-wave pulse signal and realizes the tooth of tachometric survey magnetic conductor projection or recessed groove, and being transformed into an alternating voltage signal, the process through internal precision circuit exports good square-wave pulse signal and realizes tachometric survey.The tooth of magnetic conductor projection or recessed groove, and be transformed into an alternating voltage signal, the process through internal precision circuit exports good square-wave pulse signal and realizes tachometric survey.What speed probe 12 of the present invention adopted is electromagnetic type velocimetry.This stream become device by sensor institute monitor sample wrap up in gas down cut stream change quantitative data, realize Quantitative study sample under different air quantity and rotating speed being sheared to rheological characteristics, for the further research of high-speed shadowgraph technique dynamics provides important physical mechanics parameter, for grasping high-speed shadowgraph technique kinetics mechanism further, there is potential huge expulsive force
This is used for high-speed shadowgraph technique and wraps up in air-flow to become the course of work of shear rheology device of characteristic research as follows: first, by the annular region needing the sample carrying out testing to put into annular loading groove 10, floating, then, annular cover plate 13 is placed on sample upper surface, densification is carried out to specified altitude to sample, leave standstill certain hour, then, open each sensor monitoring system and camera head, be adjusted to experimental state, open blower fan 1, air quantity is adjusted to experiment value, and the air-flow of high pressure enters air compartment 5 along wind conveying pipe line 2 and spinner-type flowmeter 201, then, after the first air distribution plate 6 and the second air distribution plate 7, is blown in the sample in annular loading groove 10, starter motor 401 and speed reduction unit 402, air compartment 5 is started running by pre-set speed, sample irregular movement under the effect of wind-force and revolving force, the sample contacted with annular cover plate 13 lower surface will produce torque value to annular cover plate 13, by camera head record the deformation of sample in annular loading groove 10, finally obtain sample at the quantitative data wrapping up in the change of gaseity down cut stream, realize Quantitative study sample under different air quantity and rotating speed being sheared to rheological characteristics, for the further research of high-speed shadowgraph technique dynamics provides important physical mechanics parameter.
Claims (10)
1. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research, it is characterized in that: comprise blower fan (1), wind conveying pipe line (2), support (3), propulsion system (4), air compartment (5), first air distribution plate (6), second air distribution plate (7), inner core (8), urceolus (9), LOAD CELLS (17), torque sensor (11), speed probe (12), camera head (16), described propulsion system (4) are connected with the first gear (501) be arranged on air compartment (5), described air compartment (5) is arranged on support (3) top by bearing (502), described air compartment (5) is connected with blower fan (1) by wind conveying pipe line (2), the air outlet end face of described air compartment (5) is provided with ring flange (503), described first air distribution plate (6) covers on ring flange (503), described urceolus (9) is arranged on the first air distribution plate (6) and goes up and connect as one with the first air distribution plate (6) and ring flange (503), described second air distribution plate (7) is arranged in urceolus (9), the periphery of described second air distribution plate (7) and the inwall of urceolus (9) suitable, LOAD CELLS (17) is provided with between described first air distribution plate (6) and the second air distribution plate (7), described inner core (8) is fixedly connected on the second air distribution plate (7), distance between described urceolus (9) and inner core (8) is 70-90mm, described inner core (8) outer wall, the space that urceolus (9) inwall and the second air distribution plate (7) surround forms annular loading groove (10), the annular cover plate (13) suitable with annular loading groove (10) is provided with in described annular loading groove (10), described annular cover plate (13) is connected with torque sensor (11) by connecting link (14), described propulsion system (4) are connected with speed probe (12), described camera head (16) is arranged on annular loading groove (10) outside by the cross bar (15) be arranged on ring flange (503).
2. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 1, it is characterized in that: the second gear (403) that described propulsion system (4) comprise motor (401), speed reduction unit (402) and are arranged on speed reduction unit (402) output shaft, described second gear (403) is engaged with the first gear (501) on air compartment (5).
3. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 1, it is characterized in that: the air intake vent (1801) of described air compartment (5) is arranged on air compartment (5) bottom, its center and the first air distribution plate (6) be centrally located at same axis, described air intake vent (1801) place is also provided with Gas inlet tube (18), and described first gear (501) is fixed on the outer wall of Gas inlet tube (18).
4. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 3, it is characterized in that: described first air distribution plate (6) is provided with the first annular stomatal band (601), the profile of described first annular stomatal band (601) is corresponding with annular loading groove (10) size, the pore (602) evenly arranged in described first annular stomatal band (601) arranges in equilateral triangle mode, described second air distribution plate (7) is provided with the second circular air hole band (701) that stomatal band (601) annular with first is corresponding, the center of described first annular stomatal band (601) and the second circular air hole band (701) be centrally located at same axis.
5. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 4, it is characterized in that: the second circular air hole band (701) upper surface of described second air distribution plate (7) is provided with anti-slipping through the net (711), described anti-slip through the net (711) are also provided with rough first impermeable barrier (721).
6. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 1, it is characterized in that: described annular cover plate (13) is provided with multiple loss hole (1301), its lower surface is provided with rough second impermeable barrier (1302).
7. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 1, it is characterized in that: described annular loading groove (10) is made up of the material of transparent material, and its altitude range is 270-330mm.
8. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 1, it is characterized in that: described camera head (16) is at least 1 high-speed camera.
9. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 1, it is characterized in that: described connecting link (14) comprises at least 2 expansion links upwards extended (1401) being fixed on annular cover plate (13) upper surface and the crossbeam (1402) being arranged on expansion link (1401) other end, described torque sensor (11) is arranged on crossbeam (1402) middle part.
10. wrap up in for high-speed shadowgraph technique the shear rheology device that air-flow becomes characteristic research as claimed in claim 1, it is characterized in that: described wind conveying pipe line (2) is provided with spinner-type flowmeter (201).
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| CN109060301B (en) * | 2018-10-25 | 2023-10-13 | 沈阳建筑大学 | Device and method for measuring impact force generated by wrapping, pinching and scraping of loose particles |
| CN111257135B (en) * | 2020-01-21 | 2021-10-08 | 同济大学 | Test device and method for measuring shear rheological property of liquefiable soil in centrifugal field |
| CN113324731A (en) * | 2021-05-17 | 2021-08-31 | 哈尔滨工程大学 | Experimental device for be used for research of underwater shear flow field electric spark bubble |
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| CN103543098A (en) | 2014-01-29 |
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