Simulation Control Method of Ship Lock Simulation Control System

Abstract

A simulation control method for a ship lock simulation control system, through the steps of determining principles, establishing control equations and mathematical models, establishing water delivery process simulation software according to the ship lock operation state control equation and the multi-stage ship lock water delivery mathematical model, simulating the operation state and water delivery process of the Three Gorges ship lock under any water level combination, obtaining the operation hydraulic conditions and water delivery hydraulic characteristics of each lock chamber, automatically calculating the operation mode that the ship lock can adopt and the corresponding operation hydraulic conditions of each lock chamber according to the upstream and downstream water level combination of the ship lock operation, visualizing the process, and displaying the water delivery flow process, valve opening process, water delivery time, maximum flow and other hydraulic characteristic values ​​on the computer screen in an intuitive and dynamic form.

Description

Technical Field

[0001] The invention belongs to the technical field of ship lock water delivery control and relates to a simulation control method of a ship lock simulation control system. Background Art

[0002] For super-large water conservancy hubs, buildings for ship navigation, that is, ship locks or ship lifts, are often set up. Because the water level of the dam body of super-large water conservancy hubs is high, the lock chambers of the ship locks are multi-level. When ships pass through the locks, the ship locks need to operate continuously to meet the changes in upstream and downstream water levels at different times. For example, more levels are required to operate at high water levels, while 3 or 4 levels can be used for operation at normal water levels. During the operation, the lock chambers must also be replenished with water, and the operation conditions are extremely complicated. Therefore, it is very necessary to simulate the water transfer process of the ship locks when ships pass through the locks in various different situations to obtain the operating hydraulic conditions and water transfer hydraulic characteristics of the lock chambers at each level. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a simulation control method for a ship lock simulation control system, so as to obtain the operating hydraulic conditions and water delivery hydraulic characteristics of each level of lock chambers.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a simulation control method of a ship lock simulation control system, comprising the following steps:

[0005] S1. Determine the principles. The operating principles of the ship lock include: (a) the highest and lowest water levels of each lock chamber should be within the design range; (b) the working head of each lock chamber should not exceed the design value; (c) the simplest operating mode is adopted, that is, no water replenishment and the number of operating lock chambers is small; (d) the single-stage water delivery time is as short as possible; Principles (c) and (d) are not always consistent and sometimes contradictory. When this happens, two operating modes are given, which give priority to satisfying Principle (c) or Principle (d).

[0006] S2, establish control equations. According to the operation principle of the ship lock, establish control equations that meet the priority conditions;

[0007] S3, boundary conditions, water level division of the ship lock, consider multiple schemes, conduct repeated analysis and comparison; determine that the upstream water level fluctuation is much greater than the downstream water level fluctuation, and adopt the water level division scheme of only replenishing water without overflowing water;

[0008] S4, mathematical model, establishes a mathematical model for the water transfer process of the ship lock;

[0009] S4-1, based on the generalized diagram of the water delivery process of the multi-stage ship lock, according to the Bernoulli equation, describes the unsteady flow equations of the water delivery process of the multi-stage ship lock;

[0010] S4-2, determine the numerical method for the unsteady flow equations;

[0011] S4-3, coefficient processing, water supply valve opening and closing equations and verification calculations; the water supply valve opening and closing equations include valve uniform speed opening and valve variable speed opening.

[0012] In S2, the process of establishing the control equations includes the following steps:

[0013] S2-1, let n be the operation level of the ship lock (3≤n≤5); h t is the working head of the lock chamber, h ti is the highest working water level of the lock chamber, h bi is the minimum working water level of the lock chamber. According to the operation principle (a), the following principles apply:

[0014] h t ≤H k ; (1)

[0015] In the formula, H k is the maximum design working head;

[0016] S2-2, according to the operating principles (b) are:

[0017] h ti ≤H Lti ;

[0018] h bi ≥H Bti ; (2)

[0019] In the formula, H Lti H Bti Design the highest and lowest water levels for the lock chamber respectively;

[0020] S2-3, according to the operating principles (c) and (d), there are:

[0021]

[0022] In the formula, H u , H w are the water levels upstream and downstream of the lock respectively, and int is the rounding function;

[0023] S2-4, equation (1), equation (2) and equation (3) form a group of control equations, which prioritizes the condition of satisfying the simplest operating mode; while equation (1), equation (2) and equation (4) form a group of control equations, which prioritizes the condition of satisfying the shortest single-stage water delivery time.

[0024] In S4-1, the unsteady flow equations are:

[0025]

[0026] Where, h is the water level of each lock chamber; A is the calculated cross-sectional area of ​​each corridor; S is the water area of ​​each lock chamber; Q is the flow rate of each corridor section; ζ is the resistance coefficient of each corridor section; ζ v is the resistance coefficient of each valve, L is the converted length of the corridor; g is the acceleration of gravity.

[0027] In S4-1, equations (5) to (10) are general basic equations describing the water delivery process of a multi-stage ship lock. Appropriate changes are made to them and applied to different water delivery processes of a multi-stage ship lock, including:

[0028] First-level watering operation: Order ζ v1 →∞,S 0 →∞;

[0029] The intermediate stage does not replenish water: v1 →∞;

[0030] Final stage water discharge operation: Let ζ v1 →∞,S 2 →∞;

[0031] Intermediate water replenishment operation (the replenishment area is the upstream reservoir): S 1 →∞.

[0032] For equations (5) to (10), the difference method is used to solve them and the difference format is written as:

[0033]

[0034] The above equations are solved by iterative method to obtain the hydraulic characteristic values ​​of the water delivery process of the ship lock, including the flow process line and the water level process line.

[0035] In S4-3, the coefficient processing is for the resistance coefficient of each part of the ship lock. According to the existing model test results, these test data are directly quoted in the mathematical model calculation; the inertia length and calculated cross-sectional area of ​​each section of the corridor are calculated according to the specific layout of the water transfer system.

[0036] In S4-3, the valve opens at a constant speed:

[0037]

[0038] In the formula, A k is the valve opening; t is the time; t v is the valve opening time; A is the sag coefficient, A=0.5A 0.5 , A 0.5 The valve opening value when it is half open time.

[0039] In S4-3, the valve opens at variable speed:

[0040]

[0041] In the formula, t 1 At a rate t v1 End time when opening; t 2 t v2 The starting time when the rate is turned on; A k is the valve opening; t is the time; t v is the valve opening time; A is the sag coefficient.

[0042] In S4-3, the verification calculation is to verify the mathematical model of the lock water delivery, perform numerical calculations on the hydraulic characteristics of the intermediate stage water delivery process of the lock, and compare the calculation results with the test values.

[0043] The ship lock simulation control system as described above has an architecture including a simulation basic parameter calculation module connected to an operating condition setting module and a valve opening mode setting module, a water delivery process simulation module connected to the simulation basic parameter calculation module and a simulation result visualization processing module; the operating condition setting module and the valve opening mode setting module are user-oriented.

[0044] The main beneficial effects of the present invention are:

[0045] According to the control equation of the ship lock operation state and the mathematical model of water delivery of multi-stage ship locks, the water delivery process simulation software is established. The operation state and water delivery process of the Three Gorges ship lock under any water level combination are simulated to obtain the operating hydraulic conditions and water delivery hydraulic characteristics of each level of lock chamber.

[0046] The iterative method is used to solve the equations to obtain the hydraulic characteristic values ​​of the lock water delivery process, including the flow process line and the water level process line.

[0047] According to the existing model test results, these test data are directly quoted in the mathematical model calculation, and the inertia length of each corridor section and the cross-sectional area are calculated according to the specific layout of the water supply system.

[0048] According to the combination of upstream and downstream water levels of the ship lock operation, the possible operation modes of the ship lock and the corresponding hydraulic conditions of each lock chamber are automatically calculated.

[0049] Visual processing displays the water flow process, valve opening process, water delivery time, maximum flow and other hydraulic characteristic values ​​on the computer screen in an intuitive and dynamic form. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0051] Figure 1 This is a generalized diagram of the water delivery process of the multi-stage ship lock of the present invention.

[0052] Figure 2 It is a comparison chart of the calculated value and the experimental value of the hydraulic characteristic curve of the intermediate water delivery of the present invention.

[0053] Figure 3 It is the overall structure diagram of the system of the present invention.

[0054] Figure 4 This is the three-stage non-water replenishment operation curve diagram of the present invention.

[0055] Figure 5 This is the four-stage water replenishment operation curve diagram of the present invention. DETAILED DESCRIPTION

[0056] like Figure 1 to Figure 5 A simulation control method for a ship lock simulation control system includes the following steps:

[0057] S1. Determine the principles. The operating principles of the ship lock include: (a) the highest and lowest water levels of each lock chamber should be within the design range; (b) the working head of each lock chamber should not exceed the design value; (c) the simplest operating mode is adopted, that is, no water replenishment and the number of operating lock chambers is small; (d) the single-stage water delivery time is as short as possible; Principles (c) and (d) are not always consistent and sometimes contradictory. When this happens, two operating modes are given, which give priority to satisfying Principle (c) or Principle (d).

[0058] S2, establish control equations. According to the operation principle of the ship lock, establish control equations that meet the priority conditions;

[0059] S3, boundary conditions, water level division of the ship lock, consider multiple schemes, conduct repeated analysis and comparison; determine that the upstream water level fluctuation is much greater than the downstream water level fluctuation, and adopt the water level division scheme of only replenishing water without overflowing water;

[0060] Preferably, the water level fluctuation upstream of the ship lock is 40.0m, which is much larger than the water level fluctuation downstream of 11.8m. Only water is replenished without overflowing. The maximum working water head H k The highest and lowest water levels of each lock chamber and the corresponding sill elevations are as follows:

[0061] series 1 2 3 4 5 <![CDATA[Highest water level H L (m)]]> 175.0 156.0 135.02 112.7 92.4 <![CDATA[Lowest water level H g (m)]]> 145.0 124.25 103.5 82.75 62.0 Sill height (m) 140.0 119.25 98.5 77.75 57.0

[0062] In the above table, the lowest water level in the first lock chamber is 145.0m and the sill elevation is 140.0m, both of which are the later water level and elevation. The water levels at the initial operation stage are 135.0m and 130.0m respectively, but the bottom elevation of the first lock chamber is 130.0m both at the initial and later stages.

[0063] S4, mathematical model, establishes a mathematical model for the water transfer process of the ship lock;

[0064] S4-1, based on multi-stage locks

[0065] A generalized diagram of the water transfer process, based on the Bernoulli equation, describes the unsteady flow equations for the water transfer process of multi-stage ship locks;

[0066] S4-2, determine the numerical method for the unsteady flow equations;

[0067] S4-3, coefficient processing, water supply valve opening and closing equations and verification calculations; the water supply valve opening and closing equations include valve uniform speed opening and valve variable speed opening.

[0068] In a preferred solution, in S2, the process of establishing the control equation includes the following steps:

[0069] S2-1, let n be the operation level of the ship lock (3≤n≤5); h t is the working head of the lock chamber, h ti is the highest working water level of the lock chamber, h bi is the minimum working water level of the lock chamber. According to the operation principle (a), the following principles apply:

[0070] h t ≤H k ; (1)

[0071] In the formula, H k is the maximum design working head;

[0072] S2-2, according to the operating principles (b) are:

[0073] h ti ≤H Lti ;

[0074] h bi ≥H Bti ; (2)

[0075] In the formula, H Lti H Bti Design the highest and lowest water levels for the lock chamber respectively;

[0076] S2-3, according to the operating principles (c) and (d), there are:

[0077]

[0078] In the formula, H u , H w are the water levels upstream and downstream of the lock respectively, and int is the rounding function;

[0079] S2-4, equation (1), equation (2) and equation (3) form a group of control equations, which prioritizes the condition of satisfying the simplest operating mode; while equation (1), equation (2) and equation (4) form a group of control equations, which prioritizes the condition of satisfying the shortest single-stage water delivery time.

[0080] In the preferred embodiment, Figure 1 In S4-1, the unsteady flow equations are:

[0081]

[0082]

[0083] Q 2 (t) = Q 0 (t)+Q 1 (t); (10)

[0084] Where, h is the water level of each lock chamber; A is the calculated cross-sectional area of ​​each corridor; S is the water area of ​​each lock chamber; Q is the flow rate of each corridor section; ζ is the resistance coefficient of each corridor section; ζ v is the resistance coefficient of each valve, L is the converted length of the corridor; g is the acceleration of gravity. Figure 1 .

[0085] In the preferred solution, in S4-1, equations (5) to (10) are general basic equations describing the water delivery process of a multi-stage ship lock, and appropriate changes are made to them and applied to different water delivery processes of a multi-stage ship lock, including:

[0086] First-level watering operation: Order ζ v1 →∞,S 0 →∞;

[0087] The intermediate stage does not replenish water: v1 →∞;

[0088] Final stage water discharge operation: Let ζ v1 →∞,S 2 →∞;

[0089] Intermediate water replenishment operation (the replenishment area is the upstream reservoir): S 1 →∞.

[0090] In the preferred solution, the equations (5) to (10) are solved by the difference method and written in the difference format:

[0091]

[0092]

[0093] Q 29t+Δt)=Q 0 9t+Δt)+Q 1 (t+Δt); (16)

[0094] The above equations are solved by iterative method to obtain the hydraulic characteristic values ​​of the water delivery process of the ship lock, including the flow process line and the water level process line.

[0095] In the preferred solution, in S4-3, the coefficient processing is for the resistance coefficient of each part of the ship lock. According to the existing model test results, these test data are directly quoted in the mathematical model calculation; the inertia length of each section of the corridor and the calculated cross-sectional area are calculated according to the specific layout of the water supply system.

[0096] In the preferred solution, in S4-3, the valve is opened at a uniform speed:

[0097]

[0098] In the formula, A k is the valve opening; t is the time; t v is the valve opening time; A is the sag coefficient, A=0.5A 0.5 , A 0.5 The valve opening value when it is half open time.

[0099] In the preferred solution, in S4-3, the valve is opened at a variable speed:

[0100]

[0101] In the formula, t 1 At a rate t v1 End time when opening; t 2 t v2 The starting time when the rate is turned on; A k is the valve opening; t is the time; t v is the valve opening time; A is the sag coefficient.

[0102] In the preferred solution, in S4-3, the verification calculation is to verify the mathematical model of the water delivery of the ship lock, perform numerical calculations on the hydraulic characteristics of the water delivery process of the intermediate stage of the ship lock, and compare the calculation results with the test values.

[0103] Embodiment 1,

[0104] like Figure 2 The hydraulic characteristics of the water transfer process from the second lock chamber to the third lock chamber were numerically calculated and compared with the experimental values. Figure 2 It can be seen that the calculated values ​​are in good agreement with the experimental values.

[0105] In a preferred solution, the ship lock simulation control system as described above has an architecture that includes a simulation basic parameter calculation module connected to an operating condition setting module and a valve opening mode setting module, and a water delivery process simulation module is connected to the simulation basic parameter calculation module and the simulation result visualization processing module; the operating condition setting module and the valve opening mode setting module are user-oriented.

[0106] Preferably, the simulation software is implemented on a Pentium MMX / 166 microcomputer, with a display resolution of 800x600 and a color of ≥64k colors. The operating system is the Chinese version of Windows 95. The programming language uses Microsoft Visual Basic 3.0 and Microsoft Fortran 5.1.

[0107] Preferably, the software automatically calculates the possible operating modes of the ship lock and the operating hydraulic conditions of each level of the lock chamber according to the upstream and downstream water level combinations of the ship lock operation.

[0108] Preferably, the software simulates unilateral opening, bilateral opening, uniform speed opening and variable speed opening of the water delivery valve.

[0109] Preferably, the software simulates the water delivery process of various operating states of the Three Gorges Ship Lock, such as first-stage operation, intermediate-stage water replenishment operation, intermediate-stage non-water replenishment operation, final-stage operation, 2 lock chambers as first-stage operation, 3 lock chambers as first-stage operation, etc.

[0110] Preferably, the software visualizes the simulation results, and displays hydraulic characteristic values ​​such as the water delivery flow process, valve opening process, water delivery time, and maximum flow in an intuitive and dynamic form on a high-resolution, high-color screen.

[0111] Preferably, the software provides a good data interface and can output all simulation results into a data file for the user to perform further analysis and calculation.

[0112] Preferably, the operating condition setting module accepts user input, including the upstream and downstream water levels of the ship lock operation, and checks the validity of the user input data. For the valid upstream and downstream water levels, the operating mode that can be adopted for the actual operation of the ship lock is calculated and submitted to the user for selection. According to the ship lock operation mode selected by the user, the operating states included in the operation mode are calculated, and the user can select any of these operating states to simulate the water transfer process.

[0113] Preferably, the valve opening mode setting module allows the user to select the opening mode of the water supply valve, including unilateral opening and bilateral opening; the opening process of the water supply valve includes the option of uniform speed opening and variable speed opening, as well as the closing rate of the water replenishment valve for water replenishment operation.

[0114] Preferably, a basic parameter calculation module is simulated, and its main task is to calculate the operating hydraulic conditions of each level of gate chambers and the basic parameters required for numerical simulation of the selected operating state according to the user's settings of the operating conditions and valve opening methods, including the inertia length and resistance coefficient of each section of the corridor.

[0115] Preferably, the water delivery process simulation module reads basic numerical simulation parameters and simulates the water delivery process.

[0116] Preferably, the simulation result visualization processing module visualizes the numerical simulation results, mainly reflecting the opening and closing process of the valve during the water delivery process, the change of the water delivery flow rate and the water level change of each level of the gate chamber.

[0117] Embodiment 2,

[0118] During the ship lock construction period, the upstream water level is 135.0m, and the downstream water level varies between 73.8-62.0m. When the downstream water level is 67.2m, there is a simple operation mode of not replenishing water in the last 3 stages, and an operation mode of replenishing water in the last 4 stages and the third lock chamber. This is used as a typical water level to simulate the ship lock water delivery process. The simulation program will first calculate these two operation modes based on this water level combination, which correspond to the two conditions of the simplest operation mode and the shortest single-stage water delivery time, as well as the operating hydraulic conditions of each lock chamber corresponding to these two operation modes.

[0119] The following table shows the operating hydraulic conditions when the upstream water level is 135.0m and the downstream water level is 67.2m, using the rear 3-stage lock chamber. The following table shows the operating hydraulic conditions when the upstream water level is 135.0m and the downstream water level is 67.2m, using the rear 4th level lock chamber.

[0120]

[0121] Then the water delivery process of each level of chamber is simulated. Since each operating state involves the filling and discharging process of multiple lock chambers, the amount of data and charts is very large, so only part of the simulation results are given here.

[0122] When the ship lock adopts the 3rd level non-water replenishment operation mode, the 3rd lock chamber is filled with water, that is, the water delivery valve is opened at a uniform speed of 2 minutes, and the miter gates at the 1st and 2nd locks are fully closed. The simulation results of the hydraulic characteristics are shown in Figure 4 .Depend on Figure 4 It can be seen that the maximum water flow is 352m 3 / s, water delivery time 18.2min.

[0123] When the ship lock adopts the 4-level water replenishment operation mode, the 3rd lock chamber is in water replenishment operation, that is, the water delivery valve is opened at a uniform speed of 2 minutes, the water replenishment valve is closed at a uniform speed of 4 minutes, and the hydraulic characteristics simulation results when the miter gates of the 1st and 2nd locks are fully closed are shown in Figure 5 ,Depend on Figure 5 It can be seen that the maximum water flow is 411m 3 / s, maximum water replenishment flow rate 294m 3 / s, water delivery time 14min.

[0124] The relevant coefficients used in the above simulation calculations are all model test values, so the simulation results obtained are prototype values ​​that have not been corrected for the impact of scale.

[0125] In the above method, the operation mode that the ship lock can adopt and the corresponding hydraulic conditions of each lock chamber can be automatically calculated according to the combination of upstream and downstream water levels of the ship lock operation. Then, the water delivery process of various operation states of the ship lock can be simulated, such as first-stage operation, intermediate-stage water replenishment operation, intermediate-stage non-water replenishment operation, final-stage operation, 2 lock chambers as first-stage operation, 3 lock chambers as first-stage operation, etc. The software also visualizes the simulation results, and displays the hydraulic characteristic values ​​such as water delivery flow process, valve opening process, water delivery time, and maximum flow on the computer screen in an intuitive and dynamic form.

[0126] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A simulation control method for a ship lock simulation control system, characterized in that: The steps include: S1. Determine the principles. The operating principles of the ship lock include: (a) the highest and lowest water levels of each lock chamber should be within the design range; (b) the working head of each lock chamber should not exceed the design value; (c) the simplest operating mode is adopted, that is, no water replenishment and the number of operating lock chambers is small; (d) the single-stage water delivery time is as short as possible; Principles (c) and (d) are not always consistent and sometimes contradictory. When this happens, two operating modes are given, which give priority to satisfying Principle (c) or Principle (d). S2, establish control equations. According to the operation principle of the ship lock, establish control equations that meet the priority conditions; S3, boundary conditions, water level division of the ship lock, consider multiple schemes, conduct repeated analysis and comparison; determine that the upstream water level fluctuation is much greater than the downstream water level fluctuation, and adopt the water level division scheme of only replenishing water without overflowing water; S4, mathematical model, establishes a mathematical model for the water transfer process of the ship lock; S4-1, based on the generalized diagram of the water delivery process of the multi-stage ship lock, according to the Bernoulli equation, describes the unsteady flow equations of the water delivery process of the multi-stage ship lock; S4-2, determine the numerical method for the unsteady flow equations; S4-3, coefficient processing, water supply valve opening and closing equations and verification calculations; the water supply valve opening and closing equations include valve uniform speed opening and valve variable speed opening.

2. The simulation control method of the ship lock simulation control system according to claim 1 is characterized in that: In S2, the process of establishing the control equations includes the following steps: S2-1, let n be the operation level of the ship lock (3≤n≤5); h t is the working head of the lock chamber, h ti is the highest working water level of the lock chamber, h bi is the minimum working water level of the lock chamber. According to the operation principle (a), the following principles apply: h t ≤H k ; (1) In the formula, H k is the maximum design working head; S2-2, according to the operating principles (b) are: h ti ≤H Lti ; h bi ≥H Bti ; (2) In the formula, H Lti H Bti Design the highest and lowest water levels for the lock chamber respectively; S2-3, according to the operating principles (c) and (d), there are: In the formula, H u , H w are the water levels upstream and downstream of the lock respectively, and int is the rounding function; S2-4, equation (1), equation (2) and equation (3) form a group of control equations, which prioritizes the condition of satisfying the simplest operating mode; while equation (1), equation (2) and equation (4) form a group of control equations, which prioritizes the condition of satisfying the shortest single-stage water delivery time.

3. The simulation control method of the ship lock simulation control system according to claim 1 is characterized in that: In S4-1, the unsteady flow equations are: Q2(t)=Q0(t)+Q1(t); (10) Where, h is the water level of each lock chamber; A is the calculated cross-sectional area of ​​each corridor; S is the water area of ​​each lock chamber; Q is the flow rate of each corridor section; ζ is the resistance coefficient of each corridor section; ζ v is the resistance coefficient of each valve, L is the converted length of the corridor; g is the acceleration of gravity.

4. The simulation control method of the ship lock simulation control system according to claim 3 is characterized in that: In S4-1, equations (5) to (10) are general basic equations describing the water delivery process of a multi-stage ship lock. Appropriate changes are made to them and applied to different water delivery processes of a multi-stage ship lock, including: First-level watering operation: Order ζ v1 →∞, S0→∞; The intermediate stage does not replenish water: v1 →∞; Final stage water discharge operation: Let ζ v1 →∞, S2→∞; Intermediate level water replenishment operation (the water replenishment area is the upstream reservoir): S1→∞.

5. The simulation control method of the ship lock simulation control system according to claim 3 is characterized in that: For equations (5) to (10), the difference method is used to solve them and the difference format is written as: Q2(t+Δt)=Q0(t+Δt)+Q1(t+Δt); (16) The above equations are solved by iterative method to obtain the hydraulic characteristic values ​​of the water delivery process of the ship lock, including the flow process line and the water level process line.

6. The simulation control method of the ship lock simulation control system according to claim 1 is characterized in that: In S4-3, the coefficient processing is for the resistance coefficient of each part of the ship lock. Based on the existing model test results, these test data are directly quoted in the mathematical model calculation; the inertia length and calculated cross-sectional area of ​​each section of the corridor are calculated according to the specific layout of the water transfer system.

7. The simulation control method of the ship lock simulation control system according to claim 1 is characterized in that: In S4-3, the valve opens at a uniform speed: In the formula, A k is the valve opening; t is the time; t v is the valve opening time; A is the sag coefficient, A=0.5A 0.5 , A 0.5 The valve opening value when it is half open time.

8. The simulation control method of the ship lock simulation control system according to claim 1 is characterized in that: In S4-3, the valve opens at variable speed: In the formula, t1 is the rate t v1 The end time when opening; t2 is t v2 The starting time when the rate is turned on; A k is the valve opening; t is the time; t v is the valve opening time; A is the sag coefficient.

9. The simulation control method of the ship lock simulation control system according to claim 1 is characterized in that: In S4-3, the verification calculation is to verify the mathematical model of the lock water delivery, perform numerical calculations on the hydraulic characteristics of the intermediate stage water delivery process of the lock, and compare the calculation results with the test values.

10. The ship lock simulation control system according to any one of claims 1 to 9, characterized in that: Its architecture includes a simulation basic parameter calculation module connected to an operating condition setting module and a valve opening mode setting module, and a water delivery process simulation module is connected to the simulation basic parameter calculation module and the simulation result visualization processing module; the operating condition setting module and the valve opening mode setting module are user-oriented.

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