CN110132522A - Simulation background wind acts on the wind-tunnel of lower wave and mobile downburst coupling - Google Patents
Simulation background wind acts on the wind-tunnel of lower wave and mobile downburst coupling Download PDFInfo
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- CN110132522A CN110132522A CN201910436513.XA CN201910436513A CN110132522A CN 110132522 A CN110132522 A CN 110132522A CN 201910436513 A CN201910436513 A CN 201910436513A CN 110132522 A CN110132522 A CN 110132522A
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses the wind-tunnel that a kind of simulation background wind acts on lower wave and mobile downburst coupling, comprising: wind-tunnel runner；Wind tunnel fan；Wave channel；Downburst simulator, for simulating the downburst under moving condition；The top surface of wind-tunnel runner is equipped with the simulation test through-hole being located above wave channel, and installation is equipped with two-dimensional surface mobile device on simulation test through-hole；Two-dimensional surface mobile device includes that be covered on simulation test through-hole soft blocks band, it is soft block to take be equipped with simulation air port, and the soft both ends for blocking band are respectively equipped with simulation air port mobile mechanism；Simulation air port mobile mechanism includes the axial moving mechanism for the soft folding and unfolding winding up roller for blocking band of retractable volume and for driving folding and unfolding winding up roller to move along its axial direction；Downburst simulator includes the downburst simulator mounting rack with simulation air port synchronizing moving, and installation is equipped with the downburst simulator for simulating downburst on downburst simulator mounting rack.
Description
Technical field
The invention belongs to Wind Tunnel Technique fields, specifically act on lower wave and mobile downburst for a kind of simulation background wind
The wind-tunnel of coupling.
Background technique
There is resource abundant in marine environment, in the lance that current global resources, energy supply anxiety and population increase rapidly
In the case that shield becomes increasingly conspicuous, exploitation and using marine resources be global economic development trend.But marine environment is very
Complexity, duration face a variety of load couplings and bring damage to ocean engineering.It wherein there is downburst, wave and back
The case where scape wind three's coupling.Downburst refers to a kind of strong down draft of locality in thunder cloud, closer to ground
Face or sea level wind speed can be bigger, and maximum wind power is up to ten Pyatyis.Wave load is the opposite fortune by wave water particle and structure
Caused by dynamic, it is a kind of random motion, is difficult carrying out accurate description with mathematical model.Background wind refers to atmospheric boundary
Wind under layer.For example, in June, 2015, " Dong Fangzhixing " passenger steamer is attacked by downburst, total in storm and wave load
Lead to passenger steamer shipwreck under same-action, causes 442 people wrecked.
Currently, analyzing wave load and Downburst Wind Loads under Background wind to the method for the coupling of structure, it is
Using first independent analysis wave load, the effect of Downburst Wind Loads or background wind load to structure, then pass through the side of superposition
Formula, to analyze response of the different load couplings to structure.The method of this independent analysis recombinant, can not consider several
The effect for influencing each other, intercoupling between load.And in a practical situation, wind field characteristic is when downburst occurs
At any time with the variation in space, wave load is also kind of a random motion.Therefore, existing technical method can not both consider
The interaction and coupling effect of a variety of loads, while load can not be also simulated with space, the situation of change of time, thus nothing
Method obtains the true response of a variety of load coupling effect flowering structures.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of simulation background wind to act on lower wave and mobile downburst coupling
The wind-tunnel of conjunction can simulate the coupling of Downburst Wind Loads and wave load to structure under Background wind, and energy
Consider the randomness of downburst and wave load, more accurately analyzes structure and make in Background wind and two kinds of different load couplings
True response condition under.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of simulation background wind acts on the wind-tunnel of lower wave and mobile downburst coupling, comprising:
Wind-tunnel runner；
Wind tunnel fan is arranged in the wind-tunnel runner and for generating Background wind；
Wave channel is arranged on the bottom surface of the wind-tunnel runner and for simulated waves；
Downburst simulator, for simulating the downburst under moving condition；
The top surface of the wind-tunnel runner is equipped with the simulation test through-hole being located above the wave channel, and the simulation test is logical
Installation is equipped with two-dimensional surface mobile device on hole；
The two-dimensional surface mobile device includes that be covered on the simulation test through-hole soft blocks band, described soft
It blocks to take and is equipped with simulation air port, and the soft both ends for blocking band are respectively provided with and it is driven to move and make the mould
The mobile simulation air port mobile mechanism of two-dimensional surface is done in the simulation test via regions in quasi- air port；
The simulation air port mobile mechanism includes for the soft folding and unfolding winding up roller for blocking band described in retractable volume and for driving
The axial moving mechanism that the folding and unfolding winding up roller is moved along its axial direction；
The downburst simulator includes the downburst simulator mounting rack with the simulation air port synchronizing moving,
Installation is equipped with the downburst simulator for simulating downburst on the downburst simulator mounting rack.
Further, the folding and unfolding winding up roller is equipped with for driving it to rotate and then winding or unreel the soft band that blocks
Retractable volume driving mechanism；The retractable volume driving mechanism includes retractable volume motor and connect with the retractable volume motor drive
Retractable volume gearbox, the output shaft of the retractable volume gearbox and the folding and unfolding winding up roller are sequentially connected.
Further, the axial moving mechanism includes being set with retractable volume roller screw rod disposed in parallel and rotatable engagement
To mobile movable plate in the shaft of the folding and unfolding winding up roller and with the folding and unfolding winding up roller synchronizing shaft, the screw rod and the shifting
Movable plate is threadedly engaged；The axial moving mechanism further includes and the retractable volume roller the first guide rail disposed in parallel, the movement
Plate is equipped with the second guide rail cooperated with first guide rail.
It further, further include being located at simulation test through-hole both ends and described soft blocking the two of band for being oriented to
Root guide roller, the guide roller and the retractable volume roll out row and with the folding and unfolding winding up roller synchronizing shaft to movement.
Further, the soft width for blocking band is more than or equal to twice of the width of the simulation test through-hole, described
The geometric center in simulation air port is fallen on the soft center line for blocking band.
Further, the downburst simulator mounting rack is equipped with the first sliding rail being located on vertical direction, under described
It hits sudden and violent flow field simulation device to be slidably installed on first sliding rail, and the downburst simulator mounting rack is equipped with and uses
In the downburst simulator driving mechanism for driving the downburst simulator to move along first sliding rail.
Further, the soft two sides for blocking band are respectively equipped with clamping plate mechanism；The clamping plate mechanism includes two clamping plates,
The soft band that blocks is located between two pieces of clamping plates, and rotatable engagement is sleeved on correspondence respectively at the both ends of two pieces of clamping plates
The folding and unfolding winding up roller shaft on and with the folding and unfolding winding up roller synchronizing shaft to movement.
Further, the downburst simulator mounting rack include be fixedly mounted on it is described it is soft block take and with it is described
The hard mounting plate that simulation air port is correspondingly arranged, first sliding rail are fixedly mounted on the hard mounting plate, hit under described
Sudden and violent flow field simulation device mounting rack and being located between the soft clamping plate blocked with two sides is slidably matched.
Further, it is equipped in the wave channel for generating the down wind wave parallel with Background wind flow direction respectively
The side vibration box of vibrating bottom box and the beam wind vertical with Background wind flow direction to wave.
Further, the wind-tunnel runner is single flow runner, and the wind tunnel fan is mounted in the single flow runner, institute
The subjacent that the single flow runner is arranged in wave channel is stated, the simulation test through-hole is arranged in the single flow runner
Top surface on；Or, the wind-tunnel runner is reverse-flow type runner, the reverse-flow type runner includes the first wind-tunnel flow channel section and second
Wind-tunnel flow channel section joins end to end between the first wind-tunnel flow channel section and the second wind-tunnel flow channel section and realizes airflow circulating, institute
It states wind tunnel fan to be mounted in the first wind-tunnel flow channel section, the bottom of the second wind-tunnel flow channel section is arranged in the wave channel
Below face, the simulation test through-hole is arranged on the top surface of the second wind-tunnel flow channel section.
The beneficial effects of the present invention are:
Simulation background wind of the invention acts on the wind-tunnel of lower wave and mobile downburst coupling, by wind-tunnel runner
Wind tunnel fan simulation background wind is set, while using the wave on wave channel mimetic surface, utilizing downburst simulator
The downburst under moving condition is simulated, in this way, can Downburst Wind Loads under simulation background wind environment and wave lotus
The coupling to structure is carried, and can consider the randomness of downburst and wave load, more accurately analyzes structure in background
True response condition under wind and two kinds of different load couplings.
By the way that simulation test through-hole is arranged on the side in simulation test area, by being arranged on the side in simulation test area
Simulation test through-hole, and it is covered on simulation test through-hole using the soft band that blocks, it so, it is possible effectively to avoid simulation test logical
Hole influences the air-flow in wind-tunnel runner；By taking setting simulation air port in soft block, and utilize simulation air port two-dimensional surface
Mobile device drives the soft band that blocks to move in the region where simulation test through-hole along vertical both direction, in this way,
Simulation air port can be driven to move in vertical both direction in the region where simulation test through-hole, i.e. simulation wind
It is mobile that mouth can do two-dimensional surface in the region where simulation test through-hole；By under setting and simulation air port synchronizing moving
Sudden and violent flow field simulation device mounting rack is hit, downburst simulator can be driven, simulation air port is being followed to do synchronous two-dimensional surface movement,
The downburst under moving condition can be simulated.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is that the structure for the wind-tunnel embodiment that simulation background wind of the present invention acts on lower wave and mobile downburst coupling is shown
It is intended to；
Fig. 2 is the A detail drawing of Fig. 1；
Fig. 3 is the B detail drawing of Fig. 2；
Fig. 4 is the C detail drawing of Fig. 2；
Fig. 5 is the top view of Fig. 2；
Fig. 6 is the structural schematic diagram of hard mounting plate region in Fig. 5.
Description of symbols:
1- wind-tunnel runner；1a- the first wind-tunnel flow channel section；1b- the second wind-tunnel flow channel section；2- simulation test area；The soft screening of 3-
Flap；4- simulates air port；5- folding and unfolding winding up roller；6- retractable volume motor；7- retractable volume gearbox；8- screw rod；9- movable plate；10-
Bar motor；11- screw rod gearbox；The first guide rail of 12-；The second guide rail of 13-；14- guide roller；15- clamping plate；16- downburst mould
Quasi- device mounting rack；17- downburst simulator；The first sliding rail of 18-；19- hard mounting plate；20- sliding block；The driving of 21- simulator
Screw rod；22- simulator driving motor；23- wave channel；23a- vibrating bottom box；The side 23b- vibration box；24- guide pin.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It better understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, acting on the wind-tunnel embodiment of lower wave and mobile downburst coupling for simulation background wind of the present invention
Structural schematic diagram.The present embodiment simulation background wind acts on the wind-tunnel of lower wave and mobile downburst coupling, and feature exists
In: include:
Wind-tunnel runner 1；
Wind tunnel fan 2 is arranged in wind-tunnel runner 1 and for generating Background wind；
Wave channel 23 is arranged on the bottom surface of wind-tunnel runner 1 and for simulated waves；
Downburst simulator, for simulating the downburst under moving condition.
The top surface of the wind-tunnel runner 1 of the present embodiment is equipped with the simulation test through-hole for being located at 25 top of wave channel, simulation test
Installation is equipped with two-dimensional surface mobile device on through-hole.The two-dimensional surface mobile device of the present embodiment includes being covered on simulation test
Soft on through-hole blocks band 3, and the soft band 3 that blocks is equipped with simulation air port 4, and the soft both ends for blocking band 3 are respectively equipped with use
In driving, it moves and makes to simulate the simulation air port moving machine for doing two-dimensional surface movement in simulation test via regions in air port 4
Structure.The simulation air port mobile mechanism of the present embodiment includes for the soft folding and unfolding winding up roller 5 for blocking band 3 of retractable volume and for driving
The axial moving mechanism that folding and unfolding winding up roller 5 is moved along its axial direction.
Specifically, the folding and unfolding winding up roller 5 of the present embodiment is equipped with for driving it to rotate and then winding or unreel soft block
With 3 retractable volume driving mechanism.The retractable volume driving mechanism of the present embodiment includes retractable volume motor 6 and passes with retractable volume motor 6
The retractable volume gearbox 7 of dynamic connection, the output shaft and folding and unfolding winding up roller 5 of retractable volume gearbox 7 are sequentially connected.By controlling respectively
It is rotated synchronously with the retractable volume motor 6 that two folding and unfolding windings up roller 5 are sequentially connected, simulation air port 4 can be driven perpendicular to retractable volume
It is moved on the axial direction of roller 5.
Specifically, the axial moving mechanism of the present embodiment includes and the screw rod 8 disposed in parallel of folding and unfolding winding up roller 5 and rotatable engagement
It is sleeved in the shaft of folding and unfolding winding up roller 5 and the movable plate 9 of axial movement synchronous with folding and unfolding winding up roller 5, screw rod 8 and 9 screw thread of movable plate
Cooperation.Preferably, the both ends of the shaft of the folding and unfolding winding up roller 5 of the present embodiment are equipped with the movable plate 9 for rotating cooperation, and two pieces
Movable plate 9 is threadedly engaged with screw rod 8, folding and unfolding winding up roller 5 can be made to be axially moveable more steady.It is set on the screw rod 8 of the present embodiment
There is the screw mandrel drive mechanism for driving it to rotate.Specifically, screw mandrel drive mechanism includes lead screw motor 10 and and lead screw motor
The screw rod gearbox 11 of 10 transmission connections, the output shaft and screw rod 8 of screw rod gearbox 11 are sequentially connected, by controlling two silks
Bar motor 10 rotates synchronously, two folding and unfolding windings up roller 5 can be driven along its axial synchronizing moving, and then drive simulation 4 edge of air port
5 axially direction of folding and unfolding winding up roller it is mobile.Preferably, the axial moving mechanism of the present embodiment further includes parallel with folding and unfolding winding up roller 5
The first guide rail 12 being arranged, movable plate 9 are equipped with the second guide rail 13 cooperated with the first guide rail 12, are used for mobile guide.
Further, the present embodiment further includes being located at simulation test for simulating the wind-tunnel of downburst under moving condition
Simultaneously for being oriented to soft two guide rollers 14 for blocking band 3, guide roller 14 is parallel with folding and unfolding winding up roller 5 simultaneously and folding and unfolding at through-hole both ends
The synchronous axial movement of winding up roller 5, for be oriented to it is soft block band 3, enable soft to block band 3 to be completely covered on simulation test logical
Kong Shang.
Further, the soft width for blocking band 3 is more than or equal to twice of the width of simulation test through-hole, simulation air port 4
Geometric center is fallen on the soft center line for blocking band 3.In this way, the two-dimensional surface moving area for simulating air port 4 can be made to cover completely
Cap analog tests the region where through-hole.
The simulation test through-hole of the present embodiment is arranged on the top surface of wind-tunnel runner 1, certainly as needed, can also be by mould
Quasi- test through-hole is arranged on the side or bottom surface of wind-tunnel runner 1, is not repeated.
The downburst simulator of the present embodiment further includes pacifying with the downburst simulator of simulation 4 synchronizing moving of air port
Shelve 16 and the downburst simulator 17 for simulating downburst, downburst simulator mounting rack 16 be equipped with it is soft
Matter blocks the first vertical sliding rail 18 of band 3, and downburst simulator 17 is slidably installed on the first sliding rail 18, and under hit
Sudden and violent flow field simulation device mounting rack 16 is equipped with the downburst for driving downburst simulator 17 to move along the first sliding rail 18
Simulator driving mechanism.
Further, the soft two sides for blocking band 3 of the present embodiment are respectively equipped with clamping plate mechanism.Specifically, clamping plate mechanism packet
Two clamping plates 15 are included, the soft band 3 that blocks is between two clamping plates 15, the both ends difference rotatable engagement suit of two clamping plates 15
In the shaft of corresponding folding and unfolding winding up roller 5 and it is synchronous with folding and unfolding winding up roller 5 axial movement, the two of the two clamping plates 15 of the present embodiment
Rotatable engagement is sleeved in the shaft of corresponding folding and unfolding winding up roller 5 and guide roller 14 respectively at end.It, can by the way that clamping plate mechanism is arranged
Prevent it is soft block band 3 and be located at the region at position among simulation test through-hole become under the airflow function inside wind-tunnel runner 1
Shape, and then avoid interfering the air-flow in wind-tunnel runner 1.Specifically, the downburst simulator mounting rack of the present embodiment
16 include being fixedly mounted on the soft hard mounting plate 19 blocked on band 3 and be correspondingly arranged with simulation air port 4, the first sliding rail 18
It is fixedly mounted on hard mounting plate 19, downburst simulator mounting rack 16 and is located at the soft folder for blocking 3 two sides of band
It is slidably matched between plate 15.
It is at least two, the first of the present embodiment that first sliding rail 18 is uniformly arranged relative to the axis annular in simulation air port 4
Sliding rail 18 is uniformly arranged relative to the axis annular in simulation air port 4 as at least four.The downburst simulator of the present embodiment is pacified
It shelves 16 and is equipped with the sliding block 20 being slidably matched with the first sliding rail 18, the downburst simulator driving mechanism packet of the present embodiment
The simulator driving screw rod 21 parallel with the first sliding rail 18 is included, simulator drives spiral shell between screw rod 21 and one of sliding block 20
Line cooperation, and the simulator driving electricity being equipped with for driving simulator driving screw rod 21 to rotate is fixedly mounted on the first sliding rail 18
Machine 22.
Further, it is equipped in the wave channel 23 of the present embodiment parallel with Background wind flow direction with the wind for generation respectively
To wave vibrating bottom box 23a and side vibration box 23b from the beam wind vertical with Background wind flow direction to wave.Pass through
Cooperation between vibrating bottom box 23a and side vibration box 23b can simulate and Background wind flow direction in wave channel 23
In the wave of any angle, it is not repeated.Wave breaker is additionally provided in the wave channel 23 of the present embodiment.
Further, wind-tunnel runner 1 can be single flow runner meeting reverse-flow type runner.When wind-tunnel runner 1 is single flow runner
When, wind tunnel fan 2 is mounted in single flow runner, and the subjacent of single flow runner is arranged in wave channel 25, and simulation test is logical
Hole is arranged on the top surface of single flow runner；When wind-tunnel runner 1 is reverse-flow type runner, reverse-flow type runner includes the first wind-tunnel
Join end to end reality between flow channel section 1a and the second wind-tunnel flow channel section 1b, the first wind-tunnel flow channel section 1a and the second wind-tunnel flow channel section 1b
Existing airflow circulating, wind tunnel fan 2 are mounted in the first wind-tunnel flow channel section 1a, and wave channel 25 is arranged in the second wind-tunnel flow channel section 1b
Subjacent, simulation test through-hole is arranged on the top surface of the second wind-tunnel flow channel section 1b.The wind-tunnel runner 1 of the present embodiment is
Reverse-flow type runner, the cross-sectional area of the first wind-tunnel flow channel section 1a is less than the cross-sectional area of the second wind-tunnel flow channel section 1b, i.e. Background wind
Air-flow is greater than the rate in the second wind-tunnel flow channel section 1b in the rate in the first wind-tunnel flow channel section 1a.The first of the present embodiment
Bending part is equipped with the guide pin 24 for being oriented to Background wind air-flow between wind-tunnel flow channel section 1a and the second wind-tunnel flow channel section 1b.
The present embodiment simulation background wind acts on the wind-tunnel of lower wave and mobile downburst coupling, by wind-tunnel runner
Wind tunnel fan simulation background wind is set, while using the wave on wave channel mimetic surface, utilizing downburst simulator
The downburst under moving condition is simulated, in this way, can Downburst Wind Loads under simulation background wind environment and wave lotus
The coupling to structure is carried, and can consider the randomness of downburst and wave load, more accurately analyzes structure in background
True response condition under wind and two kinds of different load couplings.
By the way that simulation test through-hole is arranged on the side in simulation test area, by being arranged on the side in simulation test area
Simulation test through-hole, and it is covered on simulation test through-hole using the soft band that blocks, it so, it is possible effectively to avoid simulation test logical
Hole influences the air-flow in wind-tunnel runner；By taking setting simulation air port in soft block, and utilize simulation air port two-dimensional surface
Mobile device drives the soft band that blocks to move in the region where simulation test through-hole along vertical both direction, in this way,
Simulation air port can be driven to move in vertical both direction in the region where simulation test through-hole, i.e. simulation wind
It is mobile that mouth can do two-dimensional surface in the region where simulation test through-hole；By under setting and simulation air port synchronizing moving
Sudden and violent flow field simulation device mounting rack is hit, downburst simulator can be driven, simulation air port is being followed to do synchronous two-dimensional surface movement,
The downburst under moving condition can be simulated.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. the wind-tunnel that a kind of simulation background wind acts on lower wave and mobile downburst coupling, it is characterised in that: include:
Wind-tunnel runner (1)；
Wind tunnel fan (2), setting is in the wind-tunnel runner (1) and for generating Background wind；
Wave channel (23) is arranged on the bottom surface of the wind-tunnel runner (1) and is used for simulated waves；
Downburst simulator, for simulating the downburst under moving condition；
The top surface of the wind-tunnel runner (1) is equipped with the simulation test through-hole being located above the wave channel (23), the simulation examination
It tests installation on through-hole and is equipped with two-dimensional surface mobile device；
The two-dimensional surface mobile device includes that be covered on the simulation test through-hole soft blocks band (3), described soft
It blocks band (3) and is equipped with simulation air port (4), and the soft both ends for blocking band (3) are respectively provided with and drive its movement simultaneously
Simulation air port (4) is set to do the mobile simulation air port mobile mechanism of two-dimensional surface in the simulation test via regions；
The simulation air port mobile mechanism includes for the soft folding and unfolding winding up roller (5) for blocking band (3) described in retractable volume and for driving
Move the axial moving mechanism that the folding and unfolding winding up roller (5) is moved along its axial direction；
The downburst simulator includes the downburst simulator mounting rack with described simulation air port (4) synchronizing moving
(16), installation is equipped with the downburst simulator for simulating downburst on the downburst simulator mounting rack (16)
(17)。
2. simulation background wind according to claim 1 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
Be: the folding and unfolding winding up roller (5) is equipped with for driving it to rotate and then winding or unreel the soft folding and unfolding for blocking band (3)
Roll up driving mechanism；The retractable volume driving mechanism includes retractable volume motor (6) and is sequentially connected with the retractable volume motor (6)
Retractable volume gearbox (7), the output shaft of the retractable volume gearbox (7) and the folding and unfolding winding up roller (5) are sequentially connected.
3. simulation background wind according to claim 1 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
Be: the axial moving mechanism includes being sleeved on institute with the folding and unfolding winding up roller (5) screw rod disposed in parallel (8) and rotatable engagement
State in the shaft of folding and unfolding winding up roller (5) and the movable plate (9) of axial movement synchronous with folding and unfolding winding up roller (5), the screw rod (8) with
The movable plate (9) is threadedly engaged；The axial moving mechanism further includes leading with the folding and unfolding winding up roller (5) disposed in parallel first
Rail (12), the movable plate (9) are equipped with the second guide rail (13) cooperated with first guide rail (12).
4. simulation background wind according to claim 1 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
It is: further includes being located at simulation test through-hole both ends and for being oriented to soft two guiding for blocking band (3)
Roller (14), the guide roller (14) it is parallel with the folding and unfolding winding up roller (5) and with folding and unfolding winding up roller (5) it is synchronous axial movement.
5. simulation background wind according to claim 1 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
Be: the soft width for blocking band (3) is more than or equal to twice of the width of the simulation test through-hole, the simulation air port
(4) geometric center is fallen on the soft center line for blocking band (3).
6. simulation background wind according to claim 1 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
Be: the downburst simulator mounting rack (16) is equipped with the first sliding rail (18) being located on vertical direction, hits under described
Sudden and violent flow field simulation device (17) is slidably installed on first sliding rail (18), and the downburst simulator mounting rack (16)
It is equipped with the downburst simulator for driving the downburst simulator (17) mobile along first sliding rail (18)
Driving mechanism.
7. simulation background wind according to claim 6 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
Be: the soft two sides for blocking band (3) are respectively equipped with clamping plate mechanism；The clamping plate mechanism includes two clamping plates (15), institute
It states the soft band (3) that blocks to be located between two pieces of clamping plates (15), rotatable engagement set is distinguished at the both ends of two pieces of clamping plates (15)
In the shaft of the corresponding folding and unfolding winding up roller (5) and it is synchronous with folding and unfolding winding up roller (5) axial movement.
8. simulation background wind according to claim 7 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
Be: the downburst simulator mounting rack (16) include be fixedly mounted on it is described it is soft block band (3) on and with the mould
The hard mounting plate (19) that quasi- air port (4) are correspondingly arranged, first sliding rail (18) are fixedly mounted on the hard mounting plate
(19) on, the downburst simulator mounting rack (16) be located at it is described it is soft block band (3) two sides the clamping plate
(15) it is slidably matched between.
9. simulation background wind according to claim 1 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
It is: is equipped with the bottom vibration for generating the down wind wave parallel with Background wind flow direction respectively in the wave channel (23)
The side vibration box (23b) of dynamic box (23a) and the beam wind vertical with Background wind flow direction to wave.
10. simulation background wind according to claim 1 acts on the wind-tunnel of lower wave and mobile downburst coupling, feature
Be: the wind-tunnel runner (1) is single flow runner, and the wind tunnel fan (2) is mounted in the single flow runner, the wave
The subjacent of the single flow runner is arranged in unrestrained slot (23), and the single flow runner is arranged in the simulation test through-hole
On top surface；Or, the wind-tunnel runner (1) be reverse-flow type runner, the reverse-flow type runner include the first wind-tunnel flow channel section (1a) and
Second wind-tunnel flow channel section (1b) joins end to end between the first wind-tunnel flow channel section (1a) and the second wind-tunnel flow channel section (1b)
Realize airflow circulating, the wind tunnel fan (2) is mounted in the first wind-tunnel flow channel section (1a), wave channel (23) setting
In the subjacent of the second wind-tunnel flow channel section (1b), the simulation test through-hole is arranged in the second wind-tunnel flow channel section
On the top surface of (1b).
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