CN207502152U - A kind of efficient experiment wave flume resonance wave absorber - Google Patents
A kind of efficient experiment wave flume resonance wave absorber Download PDFInfo
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- CN207502152U CN207502152U CN201721753462.6U CN201721753462U CN207502152U CN 207502152 U CN207502152 U CN 207502152U CN 201721753462 U CN201721753462 U CN 201721753462U CN 207502152 U CN207502152 U CN 207502152U
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Abstract
The utility model provides a kind of efficient experiment wave flume resonance wave absorber, belongs to ocean engineering wave physical simulation techniques field.The device is set in the wave flume of laboratory, positioned at the front of sink end straight wall, including vertical motion device, horizontal movement device, support member, porous material and rectangular box, it can be vertically moved up or down rectangular box by vertical motion device, to adjust the drinking water of rectangular box.By horizontal movement device, sink end crevice width is adjusted.After adjusting the length of rectangular box, drinking water and gap width to desired value, rectangular box is fixed on by support member in experimental trough, ensures that rectangular box and support member do not move under the wave action.This wave absorber have the characteristics that it is flexible for installation, just with adjustment, it is easy to operate.Experiment can be unfolded to the wave of wider wave frequency range, can especially carry out the experiment of low frequency long wave in the experimental trough of finite length.
Description
Technical field
The utility model belongs to ocean engineering wave physical simulation techniques field, it is proposed that a kind of efficient experiment wave water
Slot resonance wave absorber.Utilize the phenomenon that under resonant frequency, Wave Response amplitude is greatly in local space and mechanical energy dissipative is notable
The energy of incidence wave wave is absorbed, so as to reduce the back wave wave amplitude of sink or pond end, achievees the purpose that wave absorption.
Background technology
At present, the wave flume or wave tank in ocean engineering class laboratory uses and arranges artificial seashore or disappear mostly
The method that can be netted, to reduce the back wave of sink or pond end, to ensure experimental precision.In order to reach good wave absorption effect
The length of fruit, artificial seashore or energy-dissipation net generally at least needs one times or more of incidence wave wavelength.And for low frequency long wave, effectively
Wave absorption segment length then generally require several times of incidence wave wavelength.In addition, the wave dissipation effect of both the above tradition wave absorber, right
Wave parameter has significant dependence effect, it is difficult to be realized in the range of entirely experiment wave frequency and back wave wave amplitude is effectively reduced
(reaching the target that reflectance factor is less than 0.1).Traditional wave absorber has the shortcomings that wave absorption segment length and applicable wave frequency narrow range,
Cause during the experiment, the situation that can not effectively eliminate back wave often occur, experimental result generation is seriously affected.Especially
It is for the little experimental trough of the length built up for some, it is serious eliminates the required long wave absorption section of low frequency long wave
Limit effective expansion of experimental work.Therefore, the utility model proposes a kind of efficient wave absorption methods, are proposed based on this method
A kind of wave absorption segment length is short, be applicable in the wide wave absorber of wave frequency range.Especially it can effectively reduce the long wave reflection of low frequency
Characteristic, to ensure scope of experiment and improve experiment accuracy it is very valuable.
Utility model content
In order in the experimental trough of finite length, experiment be unfolded to the wave of wider wave frequency range, especially opens
The experiment of low frequency long wave is opened up, the utility model proposes a kind of efficient laboratory wave absorber based on resonance principle.
The technical solution of the utility model：
A kind of efficient experiment wave flume resonance wave absorber, the device are positioned in the wave flume of laboratory, are located at
The front of sink end straight wall, as shown in Figure 1.Including vertical motion device, horizontal movement device, support member, hole material
Material and rectangular box；
The vertical motion device includes vertical gear, rotation gear, rocking bar and strip plate；Vertical gear and rotary teeth
Wheel is mutually twisted, and rotation gear is connected with rocking bar；The strip plate of connection babinet is fixed on the lower end of vertical gear, by screw come
Connect rectangular box；Rotating rocker moves vertical gear, strip plate and rectangular box while the vertical fortune of generation by rotating gear band
It is dynamic；
The horizontal movement device includes horizontal rail and bottom pulley；Two horizontal rails are symmetrically fixed on experiment wave
The crossbeam top of the two side walls of unrestrained sink, tracks are provided for bottom pulley；
The support member includes vertical fixing device, horizontal fixture and " door " font stent, " door " font branch
The crossbeam of frame is equipped with groove, and vertical gear and rotation gear are restricted in groove；Horizontal fixture is " door " font branch
Two claws of frame bottom end, for fixing support member in basin sidewall crossbeam；Vertical fixing device is located at " door " font
On the crossbeam of stent, for clamping vertical gear, so as to vertical motion device is fixed on the crossbeam of " door " font stent；
The porous material is porous metal material, is filled in the gap between rectangular box and sink end straight wall
In, porous material plays the role of damping, to consume the energy of incidence wave；The porous metal material is woven wire or lattice
Screen；
The length L of the rectangular box determines that length L passes through with different rulers according to the wave parameter of incidence wave
Very little standard box bodies are adjusted to combine；The length of standard box bodies has the different sizes such as 50cm, 20cm, 10cm, 5cm and 1cm；Standard
The width of babinet is smaller 1cm than the internal diameter of experimental trough, and each standard box bodies lateral surface pastes nylon brush thread material, to fill standard container
Gap between module and inboard wall of cistern；The height of standard box bodies is identical with the height for testing wave flume.
Vertical displacement movement is occurred by vertical motion device rectangular box, to adjust the drinking water d of rectangular box；It is logical
It crosses horizontal movement device and adjusts sink end crevice width S；Length L, drinking water d and gap width S adjustings when rectangular box are arrived
After desired value, rectangular box is fixed on by support member in experiment wave flume, further will be upper by horizontal fixture
It states component to be fixed on the crossbeam of basin sidewall, ensures that rectangular box and support member do not move under the wave action.
It is a kind of it is efficient experiment wave flume resonance wave absorption method, this method with local wave resonate (resonance condition) and
Based on Damping work principle (damping condition), significantly showed with mechanical energy dissipative greatly using Wave Response amplitude in local space
As absorbing the energy of incidence wave wave.
The implementation principle figure of resonance wave absorption method as shown in Figure 3, needs to meet two conditions：
First part is to meet resonance condition：Experiment wave flume resonance wave absorption dress is selected according to the wave parameter of incidence wave
The geometric dimension put, the width S of the length L including rectangular box, drinking water d and gap so that experiment wave flume resonance wave absorption
Intrinsic frequency (the ω of device surrounding waterr) approach incident wave frequencies (ω)；When resonance condition meets, in gap substantially
The Wave Response that resonates is inherently along with a large amount of energy dissipation, so as to substantially reduce the amplitude of back wave；
Second part is to meet damping condition：Porous material of the installation with suitable damped coefficient μ, the damping of porous material
Coefficient μ is related to the porosity of material, i.e. porous material of the installation with suitable porosity, the energy of further dissipation incidence wave
Amount is finally reached the purpose for eliminating back wave.
It is as follows：
Step 1：Determine the element of wave of incidence wave：Depth of water h, wave frequencies ω and wave height H, according to linear waveGo out the wavelength X of incidence wave using solution by iterative method；
Step 2：According to the wavelength X of incident wave, gap width S is determined；The selection of gap width S is according to following rule
It is chosen：For wavelength parameter ranging from 1.00m<λ<The incidence wave of 2.70m, gap width S is between 0.07m~0.10m
It chooses；Wavelength parameter ranging from 2.70m<λ<The incidence wave of 4.00m, gap width S choose between 0.10m~0.15m；Wavelength
Parameter area is 4.00m<λ<The incidence wave of 6.55m, gap width S choose between 0.15m~0.20m；
Step 3：According to the wavelength X of incident wave, the length L of rectangular box is determined；The length L of rectangular box is under
Row rule is chosen：For wavelength parameter ranging from 1.00m<λ<The incidence wave of 2.70m, length L 0.01m~1.00m it
Between choose；Wavelength parameter ranging from 2.70m<λ<The incidence wave of 4.00m, length L choose between 1.00m~1.50m；Wavelength is joined
Number ranging from 4.00m<λ<The incidence wave of 6.55m, length L choose between 1.50m~1.80m；
Step 4：After the length L of gap width S and rectangular box are determined, according to resonance condition (ωr≈ ω), it determines
The drinking water d of rectangular box；If when 90% of obtained drinking water d more than the depth of water or 20% less than the depth of water, return to step two and step
Rapid three, gap width S and the length L of rectangular box are chosen again；
Step 5：According to the width S of the length L for the rectangular box chosen, drinking water d and gap, using damping condition, really
Make optimum damping coefficient μ；
Step 6：It on the basis of the length L of rectangular box, chooses various sizes of standard box bodies and is combined, ensure institute
The length summation of the standard box bodies of selection reaches L；By strip plate, rectangular box is fixedly connected on vertical gear；
Step 7：Rotating rocker, by rotating, gear band moves vertical gear, strip plate and rectangular box while generation is vertical
Movement adjusts the drinking water d that rectangular box is calculated to step 4；Then, vertical motion is filled by vertical fixing device
It puts and is fixed on " door " font stent；
Step 8：Using horizontal movement device, after adjusting gap reaches target width S, will be propped up by horizontal fixture
Support part part is fixed on the upper end of basin sidewall；
Step 9：According to optimum damping coefficient μ, porous material of the installation with suitable porosity.
In conclusion after resonance condition and damping condition are satisfied by, using the wave absorber of above-mentioned resonance wave absorption method
Almost unreflected wave dissipation effect can be provided.
The beneficial effects of the utility model：
1) the utility model proposes resonance wave absorption method and wave absorber be applicable to very wide in range wave parameter model
It encloses, zero dimension wave frequency parameter area is：0.46<ω/(g/h)0.5<1.75, wherein, ω is incident wave frequencies, and g is gravity
Acceleration, h are the depth of water；
2) incidence wave in the range of above-mentioned wave frequency, the resonance wave absorption method and resonance wave absorber can be realized preferably
Wave dissipation effect --- reflectance factor KRRespectively less than 0.05；
3) relative to traditional wave absorber, 40% of total length (L+S) no more than incident wavelength of this wave absorber, because
This can be effectively increased the length of Experimental Area.Using frequency as ω/(g/h)0.5=0.46, wave height is that the low frequency of H=0.03m is long
For wave (in depth of water h=0.5m, wavelength be λ=6.55m), (L+S when wave absorption segment length is only the 30.5% of incident wavelength
=2.00m), you can reach reflectance factor KR=0.024 excellent wave dissipation effect.
4) this wave absorber have the characteristics that it is flexible for installation, be conveniently adjusted, be easy to operate.For arbitrary wave parameter,
The basic parameter of wave absorber need to be only determined before experiment is carried out, the length L and sky of wave absorber are adjusted according to basic parameter
Between position.
Description of the drawings
Fig. 1 is the arrangement details figure of experimental trough internal resonance wave absorber.
Fig. 2 is resonance wave absorber definition graph.
Fig. 3 is the application principle figure of resonance wave absorption method.
In figure：A vertical motion devices；B support members；C horizontal movement devices；D porous materials；
E rectangular box；F sinks end straight wall；G sinks bottom surface；H basin sidewalls；1 vertical gear；
2 rotation gears；3 rocking bars；4 horizontal rails；5 bottom pulleys；6 vertical fixing devices；
7 horizontal fixtures；8 strip plates；9 " door " font stents.
Specific embodiment
According to aforementioned technical solution, further illustrated with reference to attached drawing：
A kind of efficient experiment wave flume resonance wave absorber, the device are positioned in the wave flume of laboratory, are located at
The front of sink end straight wall F, as shown in Figure 1.Including vertical motion device A, horizontal movement device C, support member B, hole
Gap material D and rectangular box E；
The vertical motion device A includes vertical gear 1, rotation gear 2, rocking bar 3 and strip plate 8；1 He of vertical gear
Rotation gear 2 is mutually twisted, and rotation gear 2 is connected with rocking bar 3；The strip plate 8 of connection babinet is fixed on the lower end of vertical gear,
Rectangular box E is connected by screw；Rotating rocker 3 drives vertical gear 1, strip plate 8 and rectangular box by rotating gear 2
Vertical motion occurs simultaneously for body E；
The horizontal movement device C includes horizontal rail 4 and bottom pulley 5；Two horizontal rails 4 are symmetrically fixed on reality
The crossbeam top of the two side walls H of wave flume is tested, tracks are provided for bottom pulley 5；
The support member B includes vertical fixing device 6, horizontal fixture 7 and " door " font stent 9, " door " word
The crossbeam of type stent 9 is equipped with groove, and vertical gear 1 and rotation gear 2 are restricted in groove；Horizontal fixture 7 is
Two claws of 9 bottom end of " door " font stent, for fixing support member B in basin sidewall H crossbeams；Vertical fixing device
6 are located on the crossbeam of " door " font stent 9, for clamping vertical gear 1, so as to which vertical motion device A is fixed on " door " word
On the crossbeam of type stent 9；
The porous material D be porous metal material, the seam being filled between rectangular box E and sink end straight wall F
In gap, porous material D plays the role of damping, to consume the energy of incidence wave；The porous metal material is woven wire
Or flase floor；
The length L of the rectangular box E determines that length L is by having difference according to the wave parameter of incidence wave
The standard box bodies of size are adjusted to combine；The length of standard box bodies has the different sizes such as 50cm, 20cm, 10cm, 5cm and 1cm；Mark
The width of quasi- babinet is smaller 1cm than the internal diameter of experimental trough, and each standard box bodies lateral surface pastes nylon brush thread material, with the standard of filling
Gap between babinet module and inboard wall of cistern；The height of standard box bodies is identical with the height for testing wave flume.
Vertical displacement movement is occurred by vertical motion device A rectangular box E, to adjust the drinking water of rectangular box E
d；Sink end crevice width S is adjusted by horizontal movement device C；Length L, drinking water d and gap width S as rectangular box E
After adjusting desired value, rectangular box E is fixed on by support member B in experiment wave flume, further fixed by level
Above-mentioned component is fixed on the crossbeam of basin sidewall H by device 7, ensures rectangular box E and support member B under the wave action not
It moves.
Claims (2)
1. a kind of efficient experiment wave flume resonance wave absorber, which is characterized in that the device is positioned over laboratory wave water
In slot, positioned at the front of sink end straight wall (F), including vertical motion device (A), horizontal movement device (C), support member
(B), porous material (D) and rectangular box (E)；
The vertical motion device (A) includes vertical gear (1), rotation gear (2), rocking bar (3) and strip plate (8)；Vertically
Gear (1) and rotation gear (2) are mutually twisted, and rotation gear (2) is connected with rocking bar (3)；The strip plate (8) for connecting babinet is fixed
In the lower end of vertical gear, rectangular box (E) is connected by screw；Rotating rocker (3), it is perpendicular by rotating gear (2) drive
To gear (1), strip plate (8) and rectangular box (E) while vertical motion occurs；
The horizontal movement device (C) includes horizontal rail (4) and bottom pulley (5)；Two horizontal rails (4) are symmetrically fixed
On the crossbeam top of the two side walls (H) of experiment wave flume, tracks are provided for bottom pulley (5)；
The support member (B) includes vertical fixing device (6), horizontal fixture (7) and " door " font stent (9),
The crossbeam of " door " font stent (9) is equipped with groove, and vertical gear (1) and rotation gear (2) are restricted in groove；Level is solid
Two claws that device (7) is " door " font stent (9) bottom end are determined, for fixing support member (B) in basin sidewall (H) horizontal stroke
Liang Shang；Vertical fixing device (6) is on the crossbeam of " door " font stent (9), for clamping vertical gear (1), so as to erect
It is fixed on the crossbeam of " door " font stent (9) to telecontrol equipment (A)；
The porous material (D) is porous metal material, is filled between rectangular box (E) and sink end straight wall (F)
In gap, porous material (D) plays the role of damping, to consume the energy of incidence wave；The porous metal material is metal
Silk screen or flase floor.
2. a kind of efficient experiment wave flume resonance wave absorber according to claim 1, which is characterized in that described
The length L of rectangular box (E) with various sizes of standard box bodies to combine by adjusting；The length of standard box bodies have 50cm,
The different size of 20cm, 10cm, 5cm and 1cm；The width of standard box bodies is smaller 1cm than the internal diameter of experimental trough, outside each standard box bodies
Nylon brush thread material is pasted in side, to fill the gap between standard box bodies module and inboard wall of cistern；The height of standard box bodies with
The height for testing wave flume is identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721753462.6U CN207502152U (en) | 2017-12-15 | 2017-12-15 | A kind of efficient experiment wave flume resonance wave absorber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721753462.6U CN207502152U (en) | 2017-12-15 | 2017-12-15 | A kind of efficient experiment wave flume resonance wave absorber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941460A (en) * | 2017-12-15 | 2018-04-20 | 大连理工大学 | A kind of efficient experiment wave flume resonance wave absorber and method |
| CN109682573A (en) * | 2019-01-11 | 2019-04-26 | 上海交通大学 | A kind of high monitoring device of moon pool inside wave for the test of drill ship water pool model |
| CN110987365A (en) * | 2019-12-26 | 2020-04-10 | 哈尔滨工程大学 | Experimental device for reduce wave influence |
| CN113588456A (en) * | 2021-07-30 | 2021-11-02 | 重庆市潼南区九橡化大环保科技有限公司 | Automatic pitch ductility test appearance of accuse temperature |
-
2017
- 2017-12-15 CN CN201721753462.6U patent/CN207502152U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941460A (en) * | 2017-12-15 | 2018-04-20 | 大连理工大学 | A kind of efficient experiment wave flume resonance wave absorber and method |
| CN107941460B (en) * | 2017-12-15 | 2023-06-13 | 大连理工大学 | Efficient experimental wave water tank resonance wave-absorbing device and method |
| CN109682573A (en) * | 2019-01-11 | 2019-04-26 | 上海交通大学 | A kind of high monitoring device of moon pool inside wave for the test of drill ship water pool model |
| CN110987365A (en) * | 2019-12-26 | 2020-04-10 | 哈尔滨工程大学 | Experimental device for reduce wave influence |
| CN110987365B (en) * | 2019-12-26 | 2022-04-05 | 哈尔滨工程大学 | Experimental device for reduce wave influence |
| CN113588456A (en) * | 2021-07-30 | 2021-11-02 | 重庆市潼南区九橡化大环保科技有限公司 | Automatic pitch ductility test appearance of accuse temperature |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180615 Effective date of abandoning: 20230613 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180615 Effective date of abandoning: 20230613 |
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