CN107702882A - A kind of experimental rig for simulating cyclone - Google Patents
A kind of experimental rig for simulating cyclone Download PDFInfo
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- CN107702882A CN107702882A CN201711206353.7A CN201711206353A CN107702882A CN 107702882 A CN107702882 A CN 107702882A CN 201711206353 A CN201711206353 A CN 201711206353A CN 107702882 A CN107702882 A CN 107702882A
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- diffuser
- inspiratory limb
- ventilating opening
- experimental rig
- circular slab
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Cyclones (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The embodiment of the invention discloses a kind of experimental rig for simulating cyclone, solve the defects of pilot region that existing experimental rig uses open type, caused pilot region wind field is easily influenceed by outside air convection, improve test accuracy.A kind of experimental rig for simulating cyclone provided in an embodiment of the present invention, including：Rotating device, inspiratory limb, diffuser；Inspiratory limb is cylindrical structure, including inspiratory limb top ventilating opening and inspiratory limb bottom ventilating opening, is ventilation shaft between inspiratory limb top ventilating opening and inspiratory limb bottom ventilating opening, rotating device is arranged inside the ventilating opening of inspiratory limb top；Diffuser is cylindrical structure, including diffuser top and diffuser bottom, it is diffuser ventilation shaft between diffuser top and diffuser bottom, diffuser top is provided with the diffuser top ventilating opening consistent with inspiratory limb bottom ventilating opening, and diffuser bottom is provided with diffuser bottom ventilating opening；Inspiratory limb bottom is connected outer wall with diffuser top to be tightly connected.
Description
Technical field
The present invention relates to cyclone simulation field, more particularly to a kind of experimental rig for simulating cyclone.
Background technology
Cyclone is a kind of regional small yardstick air vortex acutely rotated, have it is sudden it is strong, destructive power is big etc. lacks
Point.Cyclone often results in the destruction of the structures such as house, power transmission tower and casualties by building and structures.In order to improve knot
Wind resistance of the structure to cyclone, it is necessary to study the wind field characteristic of cyclone and to load caused by structure.Due to cyclone
Formation mechenism and wind field structure it is sufficiently complex, it is necessary to cyclone is studied by the method for field observation or Artificial simulative experiments
Wind field characteristic, and field observation has that investment is big, the uncontrollable factor of cost, therefore typically takes manual simulation's cyclone
Method.
Existing manual simulation's spout wind apparatus is due to structure design, often using the pilot region of open type,
The defects of result in the wind field of pilot region is easily influenceed by outside air convection, so as to influence the experiment of cyclone wind field essence
Degree.
The content of the invention
A kind of experimental rig for simulating cyclone provided in an embodiment of the present invention, solves existing experimental rig using spacious
The pilot region of open type, the defects of caused pilot region wind field is easily influenceed by outside air convection, improve experiment essence
Degree.
A kind of experimental rig for simulating cyclone provided in an embodiment of the present invention, including：Rotating device, inspiratory limb, diffusion
Section；
The inspiratory limb is cylindrical structure, including inspiratory limb top ventilating opening and inspiratory limb bottom ventilating opening, the air-breathing
It is inspiratory limb ventilation shaft between Duan Dingduan ventilating openings and inspiratory limb bottom ventilating opening, the rotating device is arranged at described
Inside the ventilating opening of inspiratory limb top；
The diffuser is cylindrical structure, including diffuser top and diffuser bottom, the diffuser top and described
It is diffuser ventilation shaft between diffuser bottom, the diffuser top is provided with consistent with inspiratory limb bottom ventilating opening
Diffuser top ventilating opening, the diffuser bottom is provided with diffuser bottom ventilating opening；
The inspiratory limb bottom is connected outer wall with the diffuser top to be tightly connected.
Alternatively, in addition to honeycomb, including honeycomb top and honeycomb bottom, the honeycomb are cellular knot
Structure, the honeycomb top are connected with inspiratory limb bottom vent seal；
The honeycomb bottom is connected with diffuser top vent seal.
Alternatively, in addition to contraction section, the contraction section include contraction section top and contraction section bottom, the contraction section top
End is connected with diffuser bottom vent seal.
Alternatively, the inwall of the contraction section is provided with froth bed.
Alternatively, the froth bed thickness of the contraction section inwall and spout caused by the experimental rig of the simulation cyclone
The diameter of wind is inversely proportional.
Alternatively, in addition to the area that becomes a mandarin, the area that becomes a mandarin include upper circular slab and lower circular slab, and the upper circular slab is with
Experimental rig of the circular slab with the simulation cyclone is coaxially disposed, and folder is provided between the upper circular slab and lower circular slab
Layer；
The upper circular slab offers the upper circular slab opening matched with the contraction section bottom；
The upper circular slab opening is to be connected with the contraction section bottom.
Alternatively, in addition to flow deflector, the flow deflector include bottom and upper segment, and the flow deflector is arranged at described become a mandarin
Between area's interlayer, the top of the flow deflector is fixedly connected with the upper circular slab bottom surface, the flow deflector it is following with it is described
Lower circular plate surface is fixedly connected.
Alternatively, the diameter of the upper circular slab is more than the diffuser internal diameter.
Alternatively, the internal diameter of the diffuser is more than the diameter three times of diffuser top ventilating opening.
Alternatively, the flow deflector and the area's axial angle that becomes a mandarin are 10 ° -80 °.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
A kind of experimental rig for simulating cyclone provided in an embodiment of the present invention, including：Rotating device, inspiratory limb, diffusion
Section；Inspiratory limb is cylindrical structure, inspiratory limb top ventilating opening and inspiratory limb bottom ventilating opening, inspiratory limb top ventilating opening and air-breathing
It is inspiratory limb ventilation shaft between the ventilating opening of section bottom, rotating device is arranged inside the ventilating opening of inspiratory limb top；Diffuser is
Cylindrical structure, diffuser top and diffuser bottom, it is diffuser ventilation shaft between diffuser top and diffuser bottom, expands
Dissipate section top and be provided with the diffuser top ventilating opening consistent with inspiratory limb bottom ventilating opening, diffuser bottom is provided with diffuser
Bottom ventilating opening；Inspiratory limb bottom is connected outer wall with diffuser top to be tightly connected.
It is diffuser ventilation shaft in the present embodiment, between diffuser top and diffuser bottom, diffuser top is set
There is the diffuser top ventilating opening consistent with inspiratory limb bottom ventilating opening, diffuser bottom is provided with diffuser bottom ventilating opening,
Inspiratory limb bottom is sealed connection with diffuser top outer wall；Diffuser completely encloses, and ensure that cyclone will not be by outside
The interference of environmental air flowing.Solve the pilot region that existing experimental rig uses open type, caused pilot region
The defects of wind field is easily influenceed by outside air convection, improve test accuracy.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of experimental rig structural representation of the simulation cyclone provided in the embodiment of the present invention；
Fig. 2 is a kind of front view of the experimental rig of the simulation cyclone provided in the embodiment of the present invention；
Wherein, illustrate as follows：
1st, rotating device；2nd, inspiratory limb；3rd, honeycomb；4th, diffuser；5th, contraction section；6th, flow deflector；7th, become a mandarin area.
Embodiment
A kind of experimental rig for simulating cyclone provided in an embodiment of the present invention, solves existing experimental rig due to adopting
With the pilot region of open type, the defects of wind field of caused pilot region is easily influenceed by outside air convection, improve
Simulate the test accuracy of cyclone wind field.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that disclosed below
Embodiment be only part of the embodiment of the present invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Refer to Fig. 1 and Fig. 2, a kind of experimental rig for simulating cyclone provided in an embodiment of the present invention, including：Rotating dress
Put 1, inspiratory limb 2, diffuser 4；
Inspiratory limb 2 is cylindrical structure, including the top ventilating opening of inspiratory limb 2 and the bottom ventilating opening of inspiratory limb 2, inspiratory limb 2 are pushed up
It is the ventilation shaft of inspiratory limb 2 to hold between ventilating opening and the bottom ventilating opening of inspiratory limb 2, and rotating device 1 is arranged at the top of inspiratory limb 2 and led to
Inside air port；
It should be noted that rotating device 1 is made up of aerofoil fan and servomotor, drive of the aerofoil fan in servomotor
Dynamic lower rotation, produces axial air-flow, air-flow flows out from the bottom up；By Serve Motor Control aerofoil fan rotating speed, so as to control
Flowing velocity of the cyclone air-flow processed in axial direction.
Diffuser 4 is cylindrical structure, including the top of diffuser 4 and the bottom of diffuser 4, the top of diffuser 4 and the bottom of diffuser 4
It is the ventilation shaft of diffuser 4 between end, the top of diffuser 4 is provided with diffuser 4 top consistent with the bottom ventilating opening of inspiratory limb 2
Ventilating opening, the bottom of diffuser 4 are provided with the bottom ventilating opening of diffuser 4；
The bottom of inspiratory limb 2 is connected outer wall with the top of diffuser 4 to be tightly connected.
It should be noted that the bottom of inspiratory limb 2 is connected outer wall with the top of diffuser 4 to be tightly connected, it is tightly connected and ensures
Cyclone will not be disturbed by air draught in external environment condition.
Further, in addition to honeycomb 3, including the top of honeycomb 3 and the bottom of honeycomb 3, honeycomb 3 are cellular knot
Structure, the top of honeycomb 3 are connected with the bottom vent seal of inspiratory limb 2；
The bottom of honeycomb 3 is connected with the top vent seal of diffuser 4.
It should be noted that cyclone before being flowed out by inspiratory limb 2, first flows through honeycomb 3, because honeycomb 3 is more
It is poroid, therefore the wind field structure of cyclone can be destroyed, and become stable laminar flow, so as to smoothly pass through rotating device 1,
Without because turbulent flow causes the vibration of rotating device 1.
Further, in addition to contraction section 5, contraction section 5 push up including the top of contraction section 5 and the bottom of contraction section 5, contraction section 5
End is connected with the bottom vent seal of diffuser 4.
Further, the inwall of contraction section 5 is provided with froth bed.
Further, the froth bed thickness of the inwall of contraction section 5 and cyclone caused by the experimental rig of simulation cyclone
Diameter is inversely proportional.
Further, in addition to the area 7 that becomes a mandarin, the area 7 that becomes a mandarin include upper circular slab and lower circular slab, upper circular slab and lower circle
Plate is coaxially disposed with simulating the experimental rig of cyclone, and interlayer is provided between upper circular slab and lower circular slab；
Upper circular slab offers the upper circular slab opening matched with the bottom of contraction section 5；
Upper circular slab opening is to be connected with the bottom of contraction section 5.
It should be noted that the diameter of contraction section 5 is less than the area 7 that becomes a mandarin, so as to which cyclone vortex is retracted into a comparison
In small diameter range；Now just form a compact-sized existing speed axially upwards has the horizontal spout being vortexed again
Wind.The diameter of contraction section 5 can be adjusted by foam-filled inwall, so as to adjust the horizontal size of cyclone.
Further, in addition to flow deflector 6, flow deflector 6 include bottom and upper segment, and flow deflector 6 is arranged at the interlayer of area 7 that becomes a mandarin
Between, the top of flow deflector 6 is fixedly connected with upper circular slab bottom surface, and the following of flow deflector 6 is fixedly connected with lower circular plate surface.
It should be noted that flow deflector 6 is rectangular sheet, flow deflector 6 has bottom and upper segment, and top is consolidated with upper circular slab bottom surface
Surely link together, following and lower circular plate surface is fixed together.
Further, the diameter of upper circular slab is more than the internal diameter of diffuser 4.
Further, the internal diameter of diffuser 4 is more than the diameter three times of the top ventilating opening of diffuser 4.
It should be noted that the diameter of diffuser 4 is sufficiently large, it is more than 3 times of the diameter of inspiratory limb 2, so as to ensure dragon
The wind speed of volume wind energy enough in the horizontal direction can gradually decay to zero, to meet the actual characteristic of cyclone in nature.Simultaneously
Because diffuser 4 is completely enclosed, it ensure that cyclone will not be disturbed by air flow in external environment condition.
Further, flow deflector 6 and the axial angle of area 7 that becomes a mandarin is 10 ° -80 °.
It should be noted that the area that becomes a mandarin closes about 7, side is air flow inlet, and air flow inlet flows into, by flow deflector 6
The vortex of horizontal direction rotation is produced afterwards.10-80 ° of angle between flow deflector 6 and experimental rig axis, by adjusting water conservancy diversion
The angle of piece 6 can change the tangential wind speed of cyclone in the horizontal direction, so as to produce different horizontal voorticities.
It should be noted that when testing building or structures, the scaled models of subjects be fixed on into
The centre in area 2 is flowed, the projected area of scaled model in the horizontal direction should be less than the 15% of the sectional area of contraction section 5.In on-test
Before need to debug wind field, adjust the rotating speed of rotating device 1 and the angle of flow deflector 7 first, after opening aerofoil fan, air-flow is from entering
Mouth is flowed into, and the vortex with horizontal tangent wind speed is formed through flow deflector 7, diffuser 4 is flowed into by contraction section 5, so as to form one
The individual complete cyclone with required horizontal tangential speed and axial velocity.After wind field is debugged, scaled model is placed
Tested among the area 7 that becomes a mandarin so as to carry out.
A kind of experimental rig for simulating cyclone provided in an embodiment of the present invention, including：Rotating device 1, inspiratory limb 2, expand
Dissipate section 4；Inspiratory limb 2 is cylindrical structure, the top ventilating opening of inspiratory limb 2 and the bottom ventilating opening of inspiratory limb 2, and the top of inspiratory limb 2 is divulged information
It is the ventilation shaft of inspiratory limb 2 between mouth and the bottom ventilating opening of inspiratory limb 2, rotating device 1 is arranged in the top ventilating opening of inspiratory limb 2
Portion；Diffuser 4 is cylindrical structure, the top of diffuser 4 and the bottom of diffuser 4, is between the top of diffuser 4 and the bottom of diffuser 4
The ventilation shaft of diffuser 4, the top of diffuser 4 are provided with the diffuser 4 top ventilating opening consistent with the bottom ventilating opening of inspiratory limb 2,
The bottom of diffuser 4 is provided with the bottom ventilating opening of diffuser 4；The bottom of inspiratory limb 2 is connected outer wall with the top of diffuser 4 and connected for sealing
Connect.It is the ventilation shaft of diffuser 4 between the top of diffuser 4 and the bottom of diffuser 4, the top of diffuser 4 is provided with the present embodiment
The diffuser 4 top ventilating opening consistent with the bottom ventilating opening of inspiratory limb 2, the bottom of diffuser 4 are provided with the ventilation of the bottom of diffuser 4
Mouthful, the bottom of inspiratory limb 2 is sealed connection with the top outer wall of diffuser 4；Diffuser 4 is completely enclosed, ensure that cyclone will not be by
The interference of air flow into external environment condition.Solve the pilot region that existing experimental rig uses open type, caused examination
The defects of region wind field is easily influenceed by outside air convection is tested, improves test accuracy.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
- A kind of 1. experimental rig for simulating cyclone, it is characterised in that including：Rotating device, inspiratory limb, diffuser；The inspiratory limb is cylindrical structure, including inspiratory limb top ventilating opening and inspiratory limb bottom ventilating opening, the inspiratory limb top It is inspiratory limb ventilation shaft to hold between ventilating opening and inspiratory limb bottom ventilating opening, and the rotating device is arranged at the air-breathing Inside Duan Dingduan ventilating openings；The diffuser is cylindrical structure, including diffuser top and diffuser bottom, the diffuser top and the diffusion Section is diffuser ventilation shaft between bottom, and the diffuser top is provided with the expansion consistent with inspiratory limb bottom ventilating opening Section top ventilating opening is dissipated, the diffuser bottom is provided with diffuser bottom ventilating opening；The inspiratory limb bottom is connected outer wall with the diffuser top to be tightly connected.
- A kind of 2. experimental rig for simulating cyclone according to claim 1, it is characterised in thatAlso include honeycomb, including honeycomb top and honeycomb bottom, the honeycomb is vesicular texture, the honeycomb Top is connected with inspiratory limb bottom vent seal；The honeycomb bottom is connected with diffuser top vent seal.
- A kind of 3. experimental rig for simulating cyclone according to claim 1, it is characterised in thatAlso include contraction section, the contraction section includes contraction section top and contraction section bottom, the contraction section top and the expansion Dissipate the connection of section bottom vent seal.
- A kind of 4. experimental rig for simulating cyclone according to claim 3, it is characterised in thatThe inwall of the contraction section is provided with froth bed.
- A kind of 5. experimental rig for simulating cyclone according to claim 4, it is characterised in thatThe froth bed thickness of the contraction section inwall with it is described simulation cyclone experimental rig caused by cyclone diameter into Inverse ratio.
- A kind of 6. experimental rig for simulating cyclone according to claim 1, it is characterised in thatAlso include becoming a mandarin area, the area that becomes a mandarin includes upper circular slab and lower circular slab, the upper circular slab and lower circular slab with The experimental rig of the simulation cyclone is coaxially disposed, and interlayer is provided between the upper circular slab and lower circular slab；The upper circular slab offers the upper circular slab opening matched with the contraction section bottom；The upper circular slab opening is to be connected with the contraction section bottom.
- A kind of 7. experimental rig for simulating cyclone according to claim 6, it is characterised in thatAlso including flow deflector, the flow deflector includes bottom and upper segment, and the flow deflector is arranged between the area's interlayer that becomes a mandarin, The top of the flow deflector is fixedly connected with the upper circular slab bottom surface, the following and lower circular plate surface of the flow deflector It is fixedly connected.
- A kind of 8. experimental rig for simulating cyclone according to claim 6, it is characterised in thatThe diameter of the upper circular slab is more than the diffuser internal diameter.
- A kind of 9. experimental rig for simulating cyclone according to claim 1, it is characterised in thatThe internal diameter of the diffuser is more than the diameter three times of diffuser top ventilating opening.
- A kind of 10. experimental rig for simulating cyclone according to claim 7, it is characterised in thatThe flow deflector is with the area's axial angle that becomes a mandarin for 10 ° -80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711206353.7A CN107702882B (en) | 2017-11-27 | 2017-11-27 | Test device for simulating tornado |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711206353.7A CN107702882B (en) | 2017-11-27 | 2017-11-27 | Test device for simulating tornado |
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| CN107702882A true CN107702882A (en) | 2018-02-16 |
| CN107702882B CN107702882B (en) | 2023-05-12 |
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| CN201711206353.7A Active CN107702882B (en) | 2017-11-27 | 2017-11-27 | Test device for simulating tornado |
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| CN110006622A (en) * | 2019-05-23 | 2019-07-12 | 重庆大学 | The physical simulating method and device that wave is coupled with mobile cyclone |
| CN110044572A (en) * | 2019-05-23 | 2019-07-23 | 重庆大学 | Tornado simulator horizontally moving device |
| CN110082057A (en) * | 2019-04-22 | 2019-08-02 | 南京航空航天大学 | A kind of novel multi-fan array cyclone wind-tunnel and simulation of wind method |
| CN110082058A (en) * | 2019-04-22 | 2019-08-02 | 南京航空航天大学 | A kind of multi-fan array wind-tunnel that simulating a variety of extreme wind fields and simulation of wind method |
| CN111855128A (en) * | 2019-09-23 | 2020-10-30 | 东南大学 | Tornado simulator |
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| CN110082058A (en) * | 2019-04-22 | 2019-08-02 | 南京航空航天大学 | A kind of multi-fan array wind-tunnel that simulating a variety of extreme wind fields and simulation of wind method |
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| Publication number | Publication date |
|---|---|
| CN107702882B (en) | 2023-05-12 |
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