A wind wave current full coupling simulation experiment system

Abstract

The present application relates to a kind of wind wave flow full coupling simulation experiment systems, including wave making system, wind making system and flow making system, the wave making system includes water tank main body, wave making board and wave absorbing board, the wave making board is set in one end of the water tank main body, the wave absorbing board is set in the other end of the water tank main body, the wave making board is connected with driving mechanism, the driving mechanism drives the wave making board movement wave making;The wind making system is set in the upper of the water tank main body, both ends of the wind making system are communicated with the water tank main body;The flow making system is set in the below of the water tank main body, both ends of the flow making system are communicated with the water tank main body.The wind wave flow full coupling simulation experiment system can carry out wind wave flow full coupling experiment and wind tunnel experiment, wave flow coupling, separate wave and separate water flow simulation experiment, the wind making system forms steady air flow field, and uniformity wind field is obtained by circulating wind making system.

Description

TECHNICAL FIELD

[0001] The present application relates to a wind wave current full coupling simulation experiment system, and belongs to the field of experimental systems in the field of ocean engineering. BACKGROUND

[0002] Ocean platform, offshore wind turbine and other ocean engineering structures are important engineering equipment needed for marine energy development. In the ocean engineering environment, the instability and damage of ocean structures caused by wind wave current is one of the main control factors of the damage of ocean engineering structures. The slamming action of air entrainment waves on the structure can also cause buckling and deformation of the structure. Therefore, it is necessary to experimentally analyze the performance of ocean engineering structures under the action of wind wave current and provide accurate parameters for ocean engineering design.

[0003] At present, the commonly used wind system of the wind wave current coupling experiment tank is divided into blowing type and suction type. The air blower is arranged in an array. The blowing type wind making equipment is located in front of the structure, and the suction type is located behind the structure. The uniform wind field cannot be obtained by the two types of wind making systems. The wind speed acting on different positions of the structure is different during the experiment, which leads to distortion of the simulation results. At the same time, the wind making equipment located in the wave current field will affect the wave current field. Another completely independent wind field can provide a uniform wind field, but the wind field and the wave current field cannot contact each other, and it is difficult to realize the wind wave full coupling experiment simulation. At the same time, the fan blades will cut the air, which will cause stage and wave-shaped impact on the air flow field.

[0004] Therefore, it is necessary to provide a wind wave current full coupling experiment system capable of simulating a fine and uniform wind field in the ocean engineering environment. SUMMARY

[0005] In view of the above problems, the purpose of the present application is to provide a wind wave current full coupling simulation experiment system, and to provide a wind wave current full coupling experiment system capable of providing a fine and uniform wind field.

[0006] To achieve the above purpose, the present application adopts the following technical scheme:

[0007] The present application provides a wind wave current full coupling simulation experiment system, which comprises a wave making system, a wind making system and a current making system. The wave making system comprises a water tank main body, a wave making plate and a wave absorbing plate. The wave making plate is arranged at one end of the water tank main body, and the wave absorbing plate is arranged at the other end of the water tank main body. The wave making plate is connected with a driving mechanism, and the driving mechanism drives the wave making plate to move and make waves.

[0008] The wind making system is arranged above the water tank main body. The two ends of the wind making system are respectively an air inlet and an air outlet. The air inlet and the air outlet are both in communication with the water tank main body. The air outlet is close to the wave making plate, and the air inlet is close to the wave absorbing plate.

[0009] The flow generating system is arranged below the water tank body, two ends of the flow generating system are water inlet and water outlet respectively, the water inlet and the water outlet are communicated with the water tank body, the water outlet is close to the wave board, and the water inlet is close to the wave absorbing board.

[0010] Preferably, the wave absorbing board is provided with a through hole, and the wave absorbing board is arranged in an inclined manner.

[0011] Preferably, one end of the wave absorbing board is hinged to the bottom plate of the water tank body, and the other end is rotated to adjust the inclination angle of the wave absorbing board, and the inclination angle of the wave absorbing board is 7°-20°.

[0012] Preferably, the driving mechanism drives the wave board to move to generate linear wave, focused wave or nonlinear wave.

[0013] Preferably, the wind generating system comprises a wind conveying pipe, a wind outlet amplifier and a wind field power system, one end of the wind field power system is connected with the wind conveying pipe, and the other end is communicated with the wind outlet amplifier, the wind conveying pipe is communicated with one end of the water tank body close to the wave absorbing board, the wind outlet amplifier forms a ring-shaped shell structure, the top of the wind outlet amplifier is provided with an air inlet, one end of the wind outlet amplifier is closed, and the other end is provided with a ring-shaped air outlet, the air inlet is connected with the wind field power system, and the air outlet is communicated with the water tank body through a gas guide pipe.

[0014] Preferably, the wind field power system comprises a motor and an air flow impeller, and the motor drives the air flow impeller to rotate.

[0015] Preferably, the connecting structure of the wind generating system and the water tank body is a table type structure, the top interface of the table type structure is connected with the wind generating system, the top interface is circular, and the bottom interface of the table type structure is connected with the water tank body, and the bottom interface is square.

[0016] Preferably, the flow generating system comprises a flow guide pipe and an axial flow pump arranged on the flow guide pipe, the water outlet of the flow guide pipe is communicated with one end of the water tank body close to the wave board, the water inlet is communicated with one end of the water tank body close to the wave absorbing board, and the flow guide grid is arranged at the water outlet.

[0017] Preferably, the distance between the water outlet of the flow generating pipe and the wave board is 2m-4m, and the distance between the water inlet and the wave absorbing board is 1m-2m.

[0018] Preferably, the top of the water tank body is provided with an openable and closable cover plate, and the cover plate is located between the air inlet and the air outlet.

[0019] The present application has the following advantages due to the above technical scheme:

[0020] The circular ring type air outlet amplifier is used to manufacture the power wind field, to form the steady air flow field, and to avoid the direct action of the turbulent wind field manufactured by the fan wind system on the structure, and to obtain the uniform wind field through the circulating wind system.

[0021] The wind making system is located outside the wave flow field, to avoid the influence of the wind making equipment on the wave flow field, and to realize the fine simulation of the wave flow field.

[0022] The wind field contacts the wave flow field, to realize the full coupling simulation of the wind wave flow.

[0023] The circulating flow field and the wind field can avoid the interference of the external environment on the experiment, and ensure that the wind field parameters and the flow field parameters only depend on the wind making system and the flow making system. BRIEF DESCRIPTION OF DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Throughout the drawings, same reference numerals are used for same components.

[0025] In the drawings:

[0026] Figure 1 is a structural schematic view of an embodiment of the wind wave flow full coupling simulation experiment system provided by the application;

[0027] Figure 2 is Figure 1 is a sectional view along A-A;

[0028] Figure 3 is a structural schematic view of one end of the connecting cylinder connected with the water tank main body;

[0029] Figure 4 is a structural schematic view of the air outlet amplifier;

[0030] Figure 5 is a structural schematic view of the air outlet amplifier along C-C;

[0031] Figure 6 is a structural schematic view of the air outlet amplifier along B-B;

[0032] Figure 7 is a structural schematic view of the axial flow pump;

[0033] In the drawings, various signs represent the following:

[0034] 1-Water tank body, 2-Connecting structure, 3-Outlet amplifier, 4-Guide pipe, 5-Air impeller, 6-Air delivery duct, 7-Bell damper, 8-Axial flow pump, 9-Air field inlet, 10-Water inlet, 11-Water outlet, 12-Guide grille, 13-Air field outlet, 14-Wave pusher, 15-Openable cover, 16-Airflow inlet, 17-Airflow outlet. Detailed Implementation

[0035] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0036] This invention provides a fully coupled wind-wave-current simulation experimental system, including a wave-generating system, a wind-generating system, and a current-generating system. The wave-generating system includes a water tank body, a wave-generating plate, and a wave-damping plate. The wave-generating plate is located at one end of the water tank body, and the wave-damping plate is located at the other end of the water tank body. The wave-generating plate is connected to a driving mechanism, which drives the wave-generating plate to move and generate waves. The wind-generating system is located above the water tank body, with an air inlet and an air outlet at its two ends, both of which are connected to the water tank body. The air outlet is close to the wave-generating plate, and the air inlet is close to the wave-damping plate. The current-generating system is located below the water tank body, with a water inlet and an air outlet at its two ends, both of which are connected to the water tank body. The water outlet is close to the wave-generating plate, and the water inlet is close to the wave-damping plate. The wind-wave-flow fully coupled simulation experimental system can perform wind-wave-flow fully coupled experiments, wind tunnel experiments, wave-flow coupling, and individual wave and water flow simulation experiments. The air-generating system forms a stable airflow field, avoiding the turbulent wind field generated by the fan-generated air field from directly acting on the structure, and obtaining a uniform wind field through the circulating air-generating system.

[0037] like Figures 1 to 7As shown in the figure, an embodiment of the present invention provides a fully coupled wind-wave-current simulation experimental system, including a wave-generating system, a wind-generating system, and a current-generating system. The wave-generating system includes a water tank body 1, a wave-generating plate 14, and a wave-damping plate 7. The wave-generating plate 14 is disposed at one end of the water tank body 1, and the wave-damping plate 7 is disposed at the other end of the water tank body 1. The wave-generating plate 14 is connected to a driving mechanism, which drives the wave-generating plate 14 to move and generate waves. The wind-generating system is disposed above the water tank body 1. The two ends of the wind-generating system are an air inlet 9 and an air outlet 13, respectively. Both the air inlet 9 and the air outlet 13 are connected to the water tank body 1. The air outlet 13 is close to the wave-generating plate 14, and the air inlet 9 is close to the wave-damping plate 7. The flow-generating system is located below the main body 1 of the water tank. The two ends of the flow-generating system are an inlet 10 and an outlet 11, respectively. Both the inlet 10 and the outlet 11 are connected to the main body 1 of the water tank. The outlet 11 is close to the wave-generating plate 14, and the inlet 10 is close to the wave-damping plate 7.

[0038] The described wind-wave-flow fully coupled simulation experimental system can realize fully coupled wind-wave-flow experiments. Furthermore, by placing the wind-generating system and the flow-generating system outside the wave-generating system, the influence of the wind-generating system on the flow-generating system is avoided, improving the simulation accuracy. Both the wind-generating system and the flow-generating system can achieve cyclical motion of the flow field and the wind field.

[0039] The wave-damping plate 7 has through holes and is inclined. The wave-damping plate 7 is used to eliminate wave reflection.

[0040] For ease of observation, the side panels of the main body 1 of the water tank are preferably made of transparent material. The main body 1 of the water tank is preferably designed to consist of a bottom plate, two side plates, a cover plate, and two end plates, and the cross-section of the main body 1 of the water tank is square.

[0041] One end of the wave-damping plate 7 is hinged to the bottom plate of the water tank body 1, and the other end of the wave-damping plate 7 rotates to adjust the tilt angle of the wave-damping plate 7. To facilitate adjustment of the tilt angle of the wave-damping plate 7, one end of the wave-damping plate 7 is hinged to the bottom plate.

[0042] The tilt angle of the wave damping plate 7 is 7° to 20°, and the tilt angle of the wave damping plate 7 can be varied between 7° and 20°, and the tilt angle is adjusted according to the wave characteristics.

[0043] The drive mechanism pushes the wave-generating plate 14 to move in order to generate linear waves, focused waves, or nonlinear waves. The drive mechanism can be an electric push rod or a cylinder, etc. One end of the electric push rod is fixed, and the other end is connected to the wave-generating plate 14. The electric push rod pushes the wave-generating plate 14 to move and generate waves.

[0044] The linear wave is obtained by the drive mechanism pushing the wave-generating plate into cosine motion, and the equation of motion of the wave-generating plate 14 that produces the linear wave is:

[0045] η1(x,t)=αcos(kx-ωt)

[0046] Where η1(x,t) is the wavefront of a linear wave, α, k, and ω are the wavefront amplitude, wave number, and angular frequency of the wave, respectively, x is the distance from the wave-pushing plate, and t is the time.

[0047] The random wave is obtained by superimposing multiple linear waves, and the equation of motion of the wave-generating plate 14 of the random wave is as follows:

[0048]

[0049] Where η2(x,t) is the wavefront of a random wave, α i k i ω i These are the wavefront amplitude, wave number, and angular frequency of the i-th superimposed wave, respectively, ε i Let N be a random initial phase between (0, 2π), and N be the number of components that make up the nonlinear wave.

[0050] The focused wave is obtained by superimposing multiple linear waves, and the equation of motion of the wave-generating plate 14 is as follows:

[0051]

[0052] Where η3(x,t) is the wavefront of the focused wave, x f , t f These are the focus position and focus time, respectively.

[0053] The wave-generating system generates waves by pushing the wave-generating plate 14 to move, generates linear waves by pushing the plate with cosine motion, and generates focused waves and nonlinear waves by superimposing multiple cosine waves; the other end of the water tank adopts a sloped perforated wave-absorbing plate 7.

[0054] The air-generating system includes an air duct 6, an air amplifier 3, and a wind farm power system 5. One end of the wind farm power system 5 is connected to the air duct 6, and the other end is connected to the end of the water tank body 1 near the wave-generating plate 14 through the air amplifier 3. The air duct 6 is connected to the end of the water tank body 1 near the wave-damping plate 7. The air amplifier 3 forms an annular shell structure. An airflow inlet 16 is formed on the top of the air amplifier 3. One end of the air amplifier 3 is closed, and the other end forms an annular airflow outlet 17. The airflow inlet 16 is connected to the wind farm power system 5, and the airflow outlet 17 is connected to the air outlet 13 through a duct.

[0055] The air generation system pumps the turbulent wind field generated by the wind farm power system 5 into the annular outlet amplifier 3. The turbulent wind field forms an annular wind field with laminar flow characteristics through the outlet of the outlet amplifier 3. The air generation system can not only generate a uniform wind field acting on the structure, but also achieve full coupling between the wind field and the wave field, realizing wave-flow air mixing simulation.

[0056] Specifically, the wind farm power system 5 includes a motor and an airflow impeller, with the motor driving the airflow impeller to rotate.

[0057] The connection structure between the air-generating system and the main body 1 of the water tank is a tabletop structure. The top interface of the tabletop structure is connected to the air-generating system, and the top interface is circular. The bottom interface of the tabletop structure is connected to the main body 1 of the water tank, and the bottom interface is square.

[0058] The flow-generating system includes a flow guide pipe 8 and an axial flow pump installed on the flow guide pipe 8. The outlet of the flow guide pipe 8 is connected to the end of the water tank body 1 near the wave-generating plate, and the inlet 10 is connected to the end of the water tank body 1 near the wave-damping plate 7. A flow guide grid 12 is provided at the outlet 11.

[0059] The flow generation system is located at the bottom of the main body 1 of the water tank. It is a circulating flow supply system powered by an axial flow pump 8. The water outlet is 2 to 4 meters away from the wave-generating plate 11. A flow guide grid 12 is arranged at the outlet position, and the water inlet position is close to the wave-damping plate 7.

[0060] The distance between the outlet of the guide pipe 8 and the wave-generating plate 14 is 2m to 4m, and the distance between the inlet and the wave-damping plate is 1m to 2m.

[0061] The top of the water tank body 1 is provided with an openable cover plate 15, which is located between the air inlet 9 and the air outlet 13. The upper part of the water tank body 1 has an openable cover plate 15 between the air inlet 9 and the air outlet 13. When the cover plate 15 is closed, the water tank body 1 is a closed system, which can be used for wind-wave-flow full coupling experiments and wind tunnel experiments; when the cover plate 15 is open, the water tank is an open structure, which can be used for wave-flow coupling, individual wave, and individual water flow simulation experiments.

[0062] The wind-wave-flow fully coupled simulation experimental system can perform wind-wave-flow fully coupled experiments, wind tunnel experiments, wave-flow coupling, and individual wave and water flow simulation experiments. The air-generating system forms a stable airflow field, avoiding the turbulent wind field generated by the fan-generated air field from directly acting on the structure, and obtaining a uniform wind field through the circulating air-generating system.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully coupled wind, wave, and current simulation experimental system, characterized in that, It includes a wave-generating system, a wind-generating system, and a flow-generating system. The wave-generating system includes a water tank body, a wave-generating plate, and a wave-damping plate. The wave-generating plate is located at one end of the water tank body, and the wave-damping plate is located at the other end of the water tank body. The wave-generating plate is connected to a driving mechanism, and the driving mechanism drives the wave-generating plate to move and generate waves. The air-generating system is located above the main body of the water tank. The two ends of the air-generating system are an air inlet and an air outlet, respectively. Both the air inlet and the air outlet are connected to the main body of the water tank. The air outlet is close to the wave-generating plate, and the air inlet is close to the wave-damping plate. The flow-generating system is located below the main body of the water tank. The two ends of the flow-generating system are an inlet and an outlet, respectively. Both the inlet and outlet are connected to the main body of the water tank. The outlet is close to the wave-generating plate, and the inlet is close to the wave-damping plate. The air generation system includes an air supply duct, an air outlet amplifier, and a wind farm power system. One end of the wind farm power system is connected to the air supply duct, and the other end is connected to the air outlet amplifier. The air supply duct is connected to the end of the water tank body near the wave-damping plate. The air outlet amplifier forms an annular shell structure. An airflow inlet is formed at the top of the air outlet amplifier. One end of the air outlet amplifier is closed, and the other end forms an annular airflow outlet. The airflow inlet is connected to the wind farm power system, and the airflow outlet is connected to the water tank body through an air guide pipe. The top of the main body of the water tank is provided with an openable cover, which is located between the air inlet and the air outlet; When the cover is closed, the water tank is a closed system, which can conduct wind-wave-flow full coupling experiments and wind tunnel experiments; when the cover is open, the water tank is an open structure, which can conduct wave-flow coupling, individual wave and individual water flow simulation experiments.

2. The wind-wave-current fully coupled simulation experimental system according to claim 1, characterized in that, The wave-damping plate is provided with through holes, and the wave-damping plate is inclined.

3. The wind-wave-current fully coupled simulation experimental system according to claim 2, characterized in that, One end of the wave-damping plate is hinged to the bottom plate of the main body of the water tank, and the other end rotates to adjust the tilt angle of the wave-damping plate, which is 7° to 20°.

4. The wind-wave-current fully coupled simulation experimental system according to claim 1, characterized in that, The drive mechanism propels the wave-generating plate to move in order to generate linear waves, focused waves, or nonlinear waves.

5. The wind-wave-current fully coupled simulation experimental system according to claim 1, characterized in that, The wind farm power system includes a motor and an airflow impeller, with the motor driving the airflow impeller to rotate.

6. The wind-wave-current fully coupled simulation experimental system according to claim 1, characterized in that, The connection structure between the air-generating system and the main body of the water tank is a tabletop structure. The top interface of the tabletop structure is connected to the air-generating system, and the top interface is circular. The bottom interface of the tabletop structure is connected to the main body of the water tank, and the bottom interface is square.

7. The wind-wave-current fully coupled simulation experimental system according to claim 1, characterized in that, The flow-generating system includes a flow guide pipe and an axial flow pump installed on the flow guide pipe. The outlet of the flow guide pipe is connected to the end of the water tank body near the wave-generating plate, and the inlet is connected to the end of the water tank body near the wave-damping plate. A flow guide grid is provided at the outlet.

8. The wind-wave-current fully coupled simulation experimental system according to claim 7, characterized in that, The distance between the outlet of the guide pipe and the wave-generating plate is 2m to 4m, and the distance between the inlet and the wave-damping plate is 1m to 2m.

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