CN108867574A - For the calibration model sluice in numerical simulation and its generally change method - Google Patents
For the calibration model sluice in numerical simulation and its generally change method Download PDFInfo
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- CN108867574A CN108867574A CN201810543500.8A CN201810543500A CN108867574A CN 108867574 A CN108867574 A CN 108867574A CN 201810543500 A CN201810543500 A CN 201810543500A CN 108867574 A CN108867574 A CN 108867574A
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- sluice
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
- E02B7/36—Elevating mechanisms for vertical-lift gates
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Theoretical Computer Science (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Evolutionary Computation (AREA)
- General Physics & Mathematics (AREA)
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- Computer Hardware Design (AREA)
- Barrages (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses a kind of calibration model sluice in numerical simulation, including sink and at least one valve system being located in sink, sink includes slot bottom and the side wall for being located at slot bottom two sides, and valve system includes door-plate moving up and down, and door-plate is across two side walls.The invention also discloses a kind of generalization methods for the calibration model sluice in numerical simulation.Beneficial effect：The grid of its calibration model can be simplified, its computational accuracy is improved, reduce its calculation amount and shorten its and calculate the time, sluice parameter can flexible modulation, may be implemented to sluice standard-sized sheet, partially to unlatch and close state and be lauched Fast simulation and the playback for flowing through stream mode.The present invention relates to fluid dynamic numerical simulation calculating fields.
Description
Technical field
The present invention relates to fluid dynamic numerical simulation calculating fields, in particular to for the calibration model in numerical simulation
Sluice and its generally change method.
Background technique
In recent years, making rapid progress with the fast development and computer technology for calculating fluid force dynamics (CFD), fluid
Numerical simulation become the important technical and method for studying complicated knowledge question of water conservancy, by establishing continuous, momentum and energy
Equation, using certain numerical computation method, by the powerful calculating ability of computer and the calculating process of sequencing, Neng Goushi
It is now online to the process of complicated knowledge question of water conservancy, and meter is simulated to the real-time process for including the important parameters such as flow velocity, pressure, water level
It calculates.In recent years, with a large amount of construction, including bridge, harbour, sluice of hydraulic engineering etc., to the flow of water of great rivers, water level,
Flow velocity and flux impact, thus to including that river flood control, Seawall safety, quality of water environment etc. have an impact.For this purpose, carrying out
Numerical simulation study can provide foundation for the decision of the construction of hydraulic engineering, be the research means and method important when former.
In the prior art, conventional sluice, which generally changes method, is：Change river topography state, refined net is carried out at sluice
Arrangement, so that technological deficiency is from water gate, including gate and gate pier etc. is physically simulated：This method requires to establish
Complicated coordinate system, and if sluice with respect in the smaller situation in waters, the number of grid needed is more, and the calculating time is longer.
In the prior art, another conventional sluice, which generally changes method, is：Using the method for static roughness, by adjusting sluice
The grid roughness at place, to simulate influence of the sluice to water flow, technological deficiency is：Water flow itself also produces this virtual roughness
Raw certain influence, causes the precision of static roughness to reduce.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of calibration model sluice in numerical simulation and its generally
Change method, may be implemented to sluice standard-sized sheet, partially to unlatch and close state and is lauched Fast simulation and the playback for flowing through stream mode.
Used technical solution to solve above-mentioned technical problem：A kind of calibration model sluice in numerical simulation,
Including sink and at least one valve system being located in sink, sink includes slot bottom and the side wall for being located at slot bottom two sides, gate
Device includes door-plate moving up and down, and door-plate is across two side walls.
As an improvement, valve system further includes bracket, bracket includes the first column and the second column, the two sides of door-plate and the
Guide frame is respectively equipped between one column and the second column.
As an improvement, guide frame includes being respectively provided at the guide groove of door-plate two sides and being respectively provided at the first column and second to stand
Guide rail on column, is slidably matched between guide groove and guide rail.
As an improvement, the top of bracket is equipped with lifting device, chain is equipped between lifting device and door-plate, in lifting device
Equipped with the sprocket wheel with chain interoperation, sprocket wheel is driven by servo motor, and servo motor is connect with outer computer.
As an improvement, bracket further includes third column and the 4th column, the first column, the second column, third column and
Four column distributed rectangulars.
As an improvement, be respectively equipped with the mounting groove of indent in two side walls, the first column, the second column, third column and
4th column is respectively embedded into mounting groove.
A kind of generalization method for the calibration model sluice in numerical simulation, utilization rate cover half type sluice carry out Numerical-Mode
It is quasi- to calculate.
As an improvement, the distance between the lower edge and slot bottom of setting door-plate are sluice aperture e, the water body in sink is set
Flow velocity is v, sets the height of water level in sink as h, sets roughness n=A1 × e+A2 × v+A3 × h, wherein 0.01≤A1≤
0.015, wherein 0.015≤A2≤0.018, wherein 0.026≤h≤0.038.
As an improvement, carry out test of many times, different sluice aperture e, the water body stream in sink are set in each test
Speed is that the height of water level in v or sink is h.
Beneficial effect：The grid of its calibration model can be simplified, its computational accuracy is improved, reduce its calculation amount and shorten its meter
Evaluation time, sluice parameter can flexible modulation, may be implemented to sluice standard-sized sheet, partially unlatch and close state and be lauched and flow through stream shape
The Fast simulation of state and playback.
Detailed description of the invention
Following further describes the present invention with reference to the drawings：
Fig. 1 is the structural schematic diagram of the sink of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the valve system of the embodiment of the present invention；
Fig. 3 is the left view of Fig. 2 of the embodiment of the present invention；
The noun that embodiment is related to Figure of description includes with label：Sink 1, slot bottom 2, side wall 3, door-plate 4, first are vertical
Column 5, the second column 6, lifting device 7, chain 8, third column 9, mounting groove 10.
Specific embodiment
Referring to figs. 1 to 3, a kind of calibration model sluice in numerical simulation including sink 1 and is located in sink 1
One valve system, sink 1 include slot bottom 2 and the side wall 3 for being located at 2 two sides of slot bottom, and valve system includes door moving up and down
Plate 4, door-plate 4 is across two side walls 3.The shape of door-plate 4 is rectangle, and the distance between lower edge and the slot bottom 2 for setting door-plate 4 are
Sluice aperture e, door-plate 4 can move up and down in sink 1, and flexibly changing gatage e may be implemented to sluice standard-sized sheet, portion
It separately opens and closed state is lauched the Fast simulation for flowing through stream mode and playback.
In order to improve stability of the door-plate 4 in water flow, valve system further includes bracket, and bracket includes 5 He of the first column
Second column 6 is respectively equipped with guide frame between the two sides of door-plate 4 and the first column 5 and the second column 6.Guide frame can mention
Accuracy that high door-plate 4 moves up and down simultaneously improves stability of the door-plate 4 in water flow, grasps moving up and down for door-plate 4 more easily
Make, is conducive to the accuracy for improving numerical simulation calculation.
Smooth in order to move up and down door-plate 4, guide frame includes being respectively provided at the guide groove of 4 two sides of door-plate and being respectively provided at
Guide rail on first column 5 and the second column 6, is slidably matched between guide groove and guide rail.The movement for the guide frame being slidably matched
Gap is small, can reduce influence of the movement clearance to water flow over-current state, is conducive to the accuracy for improving numerical simulation calculation.
In order to realize automation that door-plate 4 moves up and down and improve its Adjustment precision, the top of bracket is equipped with lifting device
7, it is equipped with chain 8 between lifting device 7 and door-plate 4, the sprocket wheel cooperated with chain 8 is equipped in lifting device 7, sprocket wheel is by servo electricity
Machine driving, servo motor are connect with outer computer.Servo motor driving door-plate 4 moves up and down, and can converse automatically gate and open
E is spent, manual measurement is not needed, the human error in test of many times can be eliminated.In Fast simulation that gatage e is varied multiple times and
It can be automated operation during playback, be conducive to improve test efficiency.The present embodiment selects chain 8 to drive about 4 door-plate
It is mobile, further include but is not limited to be replaced using other prior arts such as rope, rack gear, worm and gear.
In order to improve the stability of bracket, bracket further includes third column 9 and the 4th column, the first column 5, the second column
6, third column 9 and the 4th column distributed rectangular.
In order to reduce influence of the bracket to water flow over-current state, the mounting groove 10 of indent is respectively equipped in two side walls 3,
One column 5, the second column 6, third column 9 and the 4th column are respectively embedded into mounting groove 10.The hollow depth of mounting groove 10 is not
Less than the sectional dimension of the first column 5, the second column 6, third column 9 or the 4th column, it is convex from side wall 3 to can avoid bracket
Out, influence of the bracket to water flow over-current state can be reduced, be conducive to the accuracy for improving numerical simulation calculation.
A kind of embodiment of generalization method for the calibration model sluice in numerical simulation：
(1) the model sluice in the present embodiment uses open type single hole lock, can move up and down gate to adapt to different examinations
The requirement for testing group time, can also be arranged multiple groups mounting groove, on the length direction of sink so as to the different positions in water (flow) direction
Valve system is installed, to adapt to the requirement of different tests group time.Sink in the present embodiment is using variable depth of water design, controllably
Flow depth in sink processed.
(2) structure size of model steel sluice need to meet certain requirement, substance sluice size and model sluice ruler
Very little model scale is set as R, wherein 5≤R≤10, set the substance sluice depth of water as H, substance sluice river width be B, then by sink
Length be set as LModel=LSubstance/R+fLThe width of door-plate is set W by (H, B)Model=WSubstance/R+fW(H, B), wherein 0.001
≤α≤0.016。
(3) physical model test is carried out to sluice, determines that the water of sluice flows through properties of flow, obtain multiple groups time test work
The data of gatage e, water volume flow rate v and water level h under condition；
(4) river and sluice numerical model are established, is wherein covered at sluice using orthogonal grid, makes sluice scale and grid
Scale is not much different；
(5) relational expression of roughness n and gatage e, water volume flow rate v and water level h, i.e. roughness n=f (e, v, h) are established；It is right
Conventional sluice carries out the small physical experiments than ruler first, by different groups of time experimental studies, test v under different groups times,
E, h value, and roughness value i.e. n=R is determined by Manning formula and Chezy formula2/3J1/2/ v value, wherein J is water surface transverse gradient.Most
It is analyzed afterwards by the ternary linear regression of n and v, e, h, finally determines that the relational expression of n=f (e, v, h) is n=A1 × e+A2 × v+
A3×h；Wherein A1, A2, A3 are related coefficient, different to different gates and its factor v of flow condition, rule of thumb, wherein
0.01≤A1≤0.015, wherein 0.015≤A2≤0.018, wherein 0.026≤h≤0.038.
(6) carry out in numerical simulation, first according to the structural shape of sluice, give A1, A2 and A3 parameter value.Specifically in water
At lock grid, influence of the sluice to water flow is simulated by adjusting roughness, land-based area and waters boundary without spending change grid
To simulate the physical boundary of sluice.When carrying out numerical simulation calculation, dynamic roughness, i.e. roughness n=A1 × e+ are set as at sluice
A2×v+A3×h.It is specific to calculate step：After the completion of the i-th step calculates, ei, v under the step operating condition are determinedi、hi, to sluice grid
The i+1 of point walks roughness, uses ni+1=A1 × ei+ A2 × v+A3 × h is calculated, and is carried out adjustment roughness in real time and is stablized until calculating.
(7) it in concrete operations, can also be established by the multiple groups time experimental study of physical experiments by mass data
The correlativity of coefficient A1, A2, A3 and n, so that it is determined that the stealthy formula of n=f (e, v, h), further increases the precision of calculating
And stability.
A kind of embodiment of generalization method for the calibration model sluice in numerical simulation：
(1) the model sluice in the present embodiment uses open type single hole lock, can move up and down gate to adapt to different examinations
The requirement for testing group time, can also be arranged multiple groups mounting groove, on the length direction of sink so as to the different positions in water (flow) direction
Valve system is installed, to adapt to the requirement of different tests group time.Sink in the present embodiment is using variable depth of water design, controllably
Flow depth in sink processed.
(2) structure size of model steel sluice need to meet certain requirement, substance sluice size and model sluice ruler
Very little model scale is set as R, wherein 5≤R≤10, set the substance sluice depth of water as H, substance sluice river width be B, then by sink
Length be set as LModel=LSubstance/R+fLThe width of door-plate is set W by (H, B)Model=WSubstance/R+fW(H, B), wherein 0.001
≤α≤0.016。
(3) physical model test is carried out to sluice, determines that the water of sluice flows through properties of flow, obtain multiple groups time test work
The data of gatage e, water volume flow rate v and water level h under condition；
(4) river and sluice numerical model are established, is wherein covered at sluice using orthogonal grid, makes sluice scale and grid
Scale is not much different；
(5) relational expression of roughness n and gatage e, water volume flow rate v and water level h, i.e. roughness n=f (e, v, h) are established；It is right
Conventional sluice carries out the small physical experiments than ruler first, by different groups of time experimental studies, test v under different groups times,
E, h value, and roughness value i.e. n=R is determined by Manning formula and Chezy formula2/3J1/2/ v value, wherein J is water surface transverse gradient.Most
It is analyzed afterwards by the ternary linear regression of n and v, e, h, finally determines that the relational expression of n=f (e, v, h) is n=A1 × e+A2 × v+
A3×h；Wherein A1, A2, A3 are related coefficient, different to different gates and its factor v of flow condition, rule of thumb, wherein
0.01≤A1≤0.015, wherein 0.015≤A2≤0.018, wherein 0.026≤h≤0.038.
(6) carry out in numerical simulation, first according to the structural shape of sluice, give A1, A2 and A3 parameter value.Specifically in water
At lock grid, influence of the sluice to water flow is simulated by adjusting roughness, land-based area and waters boundary without spending change grid
To simulate the physical boundary of sluice.When carrying out numerical simulation calculation, dynamic roughness, i.e. roughness n=A1 × e+ are set as at sluice
A2×v+A3×h.It is specific to calculate step：After the completion of the i-th step calculates, ei, v under the step operating condition are determinedi、hi, to sluice grid
The i+1 of point walks roughness, uses ni+1=A1 × ei+ A2 × v+A3 × h is calculated, and is carried out adjustment roughness in real time and is stablized until calculating.
(7) it in concrete operations, can also be established by the multiple groups time experimental study of physical experiments by mass data
The correlativity of coefficient A1, A2, A3 and n, so that it is determined that the stealthy formula of n=f (e, v, h), further increases the precision of calculating
And stability.
The present embodiment proposes a kind of generalization method of dynamic roughness sluice, meanwhile, in order to determine that virtual roughness and water flow are special
The relationship between parameter is levied, packaged type model Gate appts. is established, and designing than ruler range and structure for sluice has been determined
Rule is, it can be achieved that quick calibration to relationship between virtual roughness and water stream characteristics parameter.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned embodiment party
Formula, technical field those of ordinary skill within the scope of knowledge, can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (9)
1. a kind of calibration model sluice in numerical simulation, it is characterised in that：Including sink and set in the sink at least
One valve system, the sink include slot bottom and the side wall for being located at slot bottom two sides, and the valve system includes that can move up and down
Door-plate, door-plate is across two side walls.
2. the calibration model sluice according to claim 1 in numerical simulation, it is characterised in that：The valve system
It further include bracket, the bracket includes the first column and the second column, between the two sides of door-plate and the first column and the second column
It is respectively equipped with guide frame.
3. the calibration model sluice according to claim 2 in numerical simulation, it is characterised in that：The guide frame
Including be respectively provided at the door-plate two sides guide groove and the guide rail being respectively provided on first column and the second column, guide groove with
It is slidably matched between guide rail.
4. the calibration model sluice according to claim 2 in numerical simulation, it is characterised in that：The top of the bracket
Portion is equipped with lifting device, and chain is equipped between lifting device and the door-plate, the sprocket wheel with chain interoperation is equipped in lifting device,
Sprocket wheel is driven by servo motor, and servo motor is connect with outer computer.
5. the calibration model sluice according to claim 3 in numerical simulation, it is characterised in that：The bracket also wraps
Include third column and the 4th column, the first column, the second column, third column and the 4th column distributed rectangular.
6. the calibration model sluice according to claim 5 in numerical simulation, it is characterised in that：Described two side walls
On be respectively equipped with the mounting groove of indent, the first column, the second column, third column and the 4th column are respectively embedded into mounting groove.
7. a kind of generalization method for the calibration model sluice in numerical simulation, it is characterised in that：Appointed using claim 1-6
Calibration model sluice described in meaning one carries out numerical simulation calculation.
8. the generalization method according to claim 7 for the calibration model sluice in numerical simulation, it is characterised in that：If
Determining the distance between lower edge and slot bottom of door-plate is sluice aperture e, sets the water volume flow rate in sink as v, sets in sink
Height of water level be h, roughness n=A1 × e+A2 × v+A3 × h is set, wherein 0.01≤A1≤0.015, wherein 0.015≤A2
≤ 0.018, wherein 0.026≤h≤0.038.
9. the generalization method according to claim 8 for the calibration model sluice in numerical simulation, it is characterised in that：Into
Different sluice aperture e is arranged in row test of many times in each test, the water volume flow rate in sink is water level in v or sink
Height is h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110197030A (en) * | 2019-05-29 | 2019-09-03 | 中国水利水电科学研究院 | A kind of check gate floods the regulation method flowed out |
| CN110597306A (en) * | 2019-10-14 | 2019-12-20 | 中国电建集团中南勘测设计研究院有限公司 | Flow control device |
| CN115795856A (en) * | 2022-11-28 | 2023-03-14 | 广东省水利水电科学研究院 | Method for monitoring downstream flow of sluice |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197030A (en) * | 2019-05-29 | 2019-09-03 | 中国水利水电科学研究院 | A kind of check gate floods the regulation method flowed out |
| CN110597306A (en) * | 2019-10-14 | 2019-12-20 | 中国电建集团中南勘测设计研究院有限公司 | Flow control device |
| CN110597306B (en) * | 2019-10-14 | 2022-10-25 | 中国电建集团中南勘测设计研究院有限公司 | Flow control device |
| CN115795856A (en) * | 2022-11-28 | 2023-03-14 | 广东省水利水电科学研究院 | Method for monitoring downstream flow of sluice |
| CN115795856B (en) * | 2022-11-28 | 2023-10-20 | 广东省水利水电科学研究院 | Monitoring method for downstream flow of sluice |
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| CN108867574B (en) | 2020-10-16 |
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