Testing device for wave making and icebreaking through ellipsoid linear motion in ocean current environment

Abstract

The utility model discloses a test device for wave making and icebreaking through ellipsoid linear motion in an ocean current environment, which comprises an ice water pool, a traction mechanism for controlling a cable is arranged on the ice water pool, an ellipsoid model is arranged in the ice water pool and connected with two ends of the cable, a detachable false bottom is further arranged in the ice water pool, and the ellipsoid model is connected with the cable. The detachable false bottom is located below the ellipsoid model, the two ends of the detachable false bottom are respectively provided with an internal circulation current generator, the upper end of the ice water pool is sequentially provided with a plurality of sets of sensor devices at equal intervals in the length direction of the ice water pool, and a camera is further arranged above the ice water pool and located above the sensor devices. According to the utility model, current generation is carried out through the internal circulation current generator to simulate a polar ocean current environment, and the pulley traction system drives the ellipsoid to do linear motion to cause bending gravity waves and obtain layer ice deflection change and critical failure speed, so that the influence of ocean current on wave making and ice breaking is researched.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship and ocean icebreaking, and relates to a test device for wave-making and icebreaking by linear motion of an ellipsoid in an ocean current environment. Background Art

[0002] As global warming accelerates the melting of sea ice, the rich resources and valuable Arctic shipping routes in the polar regions have brought their potential value to a practical level, prompting countries around the world to increase their research on the polar regions. Due to the presence of sea ice, icebreaking is a very real and critical issue facing polar marine structures. Consequently, research has emerged on novel icebreaking methods, such as hovercraft icebreaking, bubble icebreaking, water jet icebreaking, and curved gravity wave icebreaking. In these methods, objects moving beneath the ice can trigger a hydroelastic response in the ice layer using wave-generating loads. Driven by elastic forces, inertial forces, and the gravity of the water waves, the ice layer generates curved gravity waves, which in turn cause deformation and damage. Compared with breaking ice by direct contact of objects, breaking ice by creating waves under ice can avoid direct contact between underwater vehicles and the ice surface, and protect the vehicles while breaking the ice. Underwater vehicles are mostly streamlined, with a shape similar to an ellipsoid, and the icebreaking situation can be observed by changing the flattening of the ellipsoid. Therefore, the utility model uses a simplified ellipsoid to replace the underwater vehicle.

[0003] In the real polar ocean environment, there are complex ocean current fields. At present, relevant experiments have not been carried out in China to explore the impact of ocean currents on the movement of objects under the ice, wave generation and icebreaking. To complete this experiment, a low-temperature ice water pool and a pulley traction system with current-generating functions are required. General ice water pools do not have current-generating and pulley traction functions. Utility Model Content

[0004] The purpose of the utility model is to provide a test device for wave-making and ice-breaking by the linear motion of an ellipsoid in an ocean current environment. The device uses an internal circulation current-making machine to create a flow to simulate the polar ocean current environment. The pulley traction system drives the ellipsoid to move in a linear manner, causing curved gravity waves, and obtaining the deflection change of the ice layer and the critical destruction speed, so as to study the influence of ocean current on wave-making and ice-breaking.

[0005] The technical solution adopted by the present invention is a test device for wave-making and ice-breaking by the linear motion of an ellipsoid in an ocean current environment, comprising an ice water pool, a traction mechanism for controlling a cable provided on the ice water pool, an ellipsoid model provided inside the ice water pool, the ellipsoid model being connected to both ends of the cable, a detachable false bottom provided inside the ice water pool, the detachable false bottom being located below the ellipsoid model, internal circulation flow making machines being provided at both ends of the detachable false bottom, a plurality of groups of sensor devices being equidistantly arranged at the upper end of the ice water pool along the length direction of the ice water pool, a camera being provided above the ice water pool, the camera being located above the sensor device.

[0006] The utility model is also characterized in that:

[0007] The traction mechanism includes pulleys A respectively arranged above the two ends of the ice water pool, and two pulleys B are respectively provided on the inner walls of the two ends of the ice water pool. A guide mechanism is respectively provided directly below the two pulleys B. One end of the cable is connected to one end of the ellipsoid model, and the other end of the cable passes through the guide mechanism set at one end of the ice water pool, the pulley B set at one end of the ice water pool, the pulley A set at one end of the ice water pool, the pulley A set at the other end of the ice water pool, the pulley B set at the other end of the ice water pool, and the guide mechanism set at the other end of the ice water pool, and is finally connected to the other end of the ellipsoid model.

[0008] The removable false bottom divides the ice water pool into two parts, the upper part of the removable false bottom is the flow-making area, the lower part of the removable false bottom is the return flow area, and internal circulation flow-making machines are respectively provided at both ends of the removable false bottom.

[0009] A servo motor is connected to the central axis of one of the pulleys A.

[0010] Each set of sensor devices includes a horizontally arranged bracket, with supports provided at both ends of the bracket, and a laser displacement sensor installed on the bracket.

[0011] The two supports cooperate with the slide rails arranged on both sides of the inner wall of the ice water pool.

[0012] Holes A are slotted on the side walls of the ice water pool on opposite sides, and the guide mechanism is installed in the holes A.

[0013] The guide mechanism includes a bottom support platform fixed to the inner wall of the ice water pool, one end of the lead screw is connected to the bottom support platform, and a lead screw nut is provided on the lead screw. Guide rails A are provided in parallel on opposite sides of the lead screw, and a scale is provided on one side of one of the guide rails A; a hollow fixed frame is provided at the other end of the lead screw, one end of the lead screw passes through the center of the fixed frame and is connected to the control rod, and a pulley C is installed on the upper surface of the lead screw nut.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. This utility model transforms an ordinary ice water pool into an internal circulation flow pool, which reduces the floor space while avoiding external influences and produces a stable and continuous flow;

[0016] 2. This utility model uses a traction system as the power of the ellipsoid, which can control the speed and direction of the motor to control the movement speed and direction of the test object;

[0017] 3. The outdoor ice pool of this utility model can realize the function of freezing a layer of ice at a suitable low temperature, and can be used for field testing simply and efficiently;

[0018] 4. The laser displacement measurement system used in this utility model can accurately obtain the deflection changes of different positions of the ice layer. It is easy to disassemble and the spacing position is adjustable.

[0019] 5. This utility model uses snow covering technology to observe ice cracks;

[0020] 6. The utility model can adjust the position of the small pulley through the guide mechanism so that the ellipsoid model is located at different water depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a side view of the test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment (current-facing working condition);

[0022] Figure 2 This is a top view of the test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment;

[0023] Figure 3 This is a schematic diagram of a flow generator in a test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment;

[0024] Figure 4 It is a single sensor device in the test device for the linear motion of an ellipsoid in an ocean current environment;

[0025] Figure 5 This is a schematic diagram of the guide mechanism of the test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment;

[0026] Figure 6 The present invention is a curve showing the maximum deformation of an ice plate and the change of the ellipsoid movement speed, which are measured by using the test device for wave-making and ice-breaking by the linear motion of an ellipsoid in an ocean current environment.

[0027] In the figure, 1. Ice water pool, 2. Servo motor, 3. Pulley A, 4. Camera;

[0028] 5. Sensor device, 5-1. Support, 5-2. Bracket, 5-3. Laser displacement sensor;

[0029] 6. Layer ice, 7. Ellipsoid model;

[0030] 8. Internal circulation flow generator, 8-1. Fairing, 8-2. One-way pump;

[0031] 9. Removable false bottom, 10. Pulley B, 11. Cable,

[0032] 12. Guide mechanism, 12-1. Control rod, 12-2. Fixed frame, 12-3. Screw nut, 12-4. Guide rail A, 12-5. Bottom support platform, 12-6. Pulley C, 12-7. Scale, 12-8. Screw;

[0033] 13. Fixed table, 14. Guide rail, 15. Marking sheet. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0035] The utility model is a test device for wave-making and ice-breaking by the linear motion of an ellipsoid in an ocean current environment. An internal circulation flow-making system generates a uniform flow with a constant speed. A servo motor controls a large pulley to cause the ellipsoid to move and generate waves. Under the combined action of the flow and waves, cracks will appear on the ice surface. The laser displacement measurement system records the changes in the deflection of the ice surface, providing help for exploring how the ellipsoid under the ice generates waves and breaks ice.

[0036] The utility model is used for the test device of wave-making and ice-breaking by the linear motion of an ellipsoid in an ocean current environment. The test device can be used to conduct the ice-breaking mechanism test of the ellipsoid under ice in an ocean current environment in a small ice water tank. The ice-breaking mechanism of curved gravity waves can be further explored through the test.

[0037] The utility model designs a test device for wave-making and ice-breaking by the linear motion of an ellipsoid under an ocean current environment. The test device has the function of simulating real ocean currents and wave-making and ice-breaking by an ellipsoid, and can realize the study of the ice-breaking effect under the action of waves and currents, providing help for exploring the wave-making and ice-breaking mechanism of an ellipsoid under the influence of ocean currents and the destruction mode of ice under curved gravity waves.

[0038] The utility model modifies the existing towing ice water pool and adds an internal circulation flow-making machine, so that the ice water pool has the function of flow-making, and can also tow the ellipsoid to make linear motion. The internal circulation flow-making system can solve the problem that the slender ice water pool cannot form backflow on both sides of the flow-making area like the square pool, and at the same time avoid the adverse factors brought by the external circulation. The bidirectional rotation of the servo motor can simulate the specific test conditions of the ellipsoid making waves and breaking ice in both the head-on flow and the following flow states.

[0039] Example 1

[0040] The utility model is used for testing the wave-making and ice-breaking of the ellipsoid linear motion in the ocean current environment. Figure 1 As shown, it includes an ice water pool 1, a servo motor 2, a pulley A3, a camera 4, a sensor device 5, a layer of ice 6, an ellipsoid model 7, an internal circulation flow generator 8, a detachable false bottom 9, a pulley B10, a cable 11, a guide mechanism 12, a fixed platform 13, a guide rail 14, and a marking piece 15.

[0041] Example 2

[0042] The utility model is a test device for wave-making and ice-breaking by the linear motion of an ellipsoid in an ocean current environment, comprising an ice water pool 1, a traction mechanism for controlling a cable 11 being provided on the ice water pool 1, an ellipsoid model 7 being provided inside the ice water pool 1, the ellipsoid model 7 being connected to both ends of the cable 11, a detachable false bottom 9 being further provided inside the ice water pool 1, the detachable false bottom 9 being located below the ellipsoid model 7, and internal circulation flow making machines 8 being respectively provided at both ends of the detachable false bottom 9, a plurality of groups of sensor devices 5 being equidistantly arranged at the upper end of the ice water pool 1 along the length direction of the ice water pool 1, a camera 4 being further provided above the ice water pool 1, and the camera 4 being located above the sensor device 5.

[0043] Example 3

[0044] The traction mechanism includes pulleys A3 respectively arranged above the two ends of the ice water pool 1. Two pulleys B10 are respectively provided on the inner walls of the two ends of the ice water pool 1. A guide mechanism 12 is respectively provided directly below the two pulleys B10.

[0045] Example 4

[0046] Pulleys A3 are respectively provided above both ends of the ice water pool 1, and two pulleys B10 are respectively provided on the inner walls of both ends of the ice water pool 1. An ellipsoid model 7 is provided inside the ice water pool 1, and the diving depth of the ellipsoid model 7 is set to 1.2D, 1.5D, and 2D, where D is the diameter of the ellipsoid model 7. One end of the cable 11 is connected to one end of the ellipsoid model 7, and the other end of the cable 11 passes through the guide mechanism 12 set at one end of the ice water pool 1, the pulley B10 set at one end of the ice water pool 1, the pulley A3 set at one end of the ice water pool 1, the pulley A3 set at the other end of the ice water pool 1, the pulley B10 set at the other end of the ice water pool 1, and the guide mechanism 12 set at the other end of the ice water pool 1, and is then connected to the other end of the ellipsoid model 7; the ellipsoid model 7 is used to simulate an underwater vehicle.

[0047] Example 5

[0048] Several groups of sensor devices 5 are equidistantly arranged at the upper end of the ice water pool 1 along the length of the ice water pool 1 . A camera 4 is provided above the ice water pool 1 to record the entire test process. The camera 4 is located above the sensor device 5 .

[0049] Example 6

[0050] The ice water pool 1 is also provided with a removable false bottom 9, which is located below the ellipsoid model 7. The removable false bottom 9 divides the ice water pool 1 into two parts, the upper part of the removable false bottom 9 is the flow-generating area, and the lower part of the removable false bottom 9 is the return flow area. The two ends of the removable false bottom 9 are respectively provided with internal circulation flow generators 8. The removable false bottom 9 is connected to the fixed platforms 13 raised on both sides of the ice water pool 1.

[0051] Example 7

[0052] like Figure 2 As shown, a servo motor 2 is connected to the central axis of a pulley A3. Figure 3 As shown, the internal circulation flow generator 8 consists of a fairing 8-1 and a one-way pump 8-2. The internal circulation flow generator 8 is secured to the removable false bottom 9 with screws and can be removed. To minimize the boundary effect of the ice pool 1 and consider the effective working distance of the internal circulation flow generator 8 to ensure the accuracy of the ellipsoid model 7 test, the spacing between the two internal circulation flow generators 8 is 20 times the length of the ellipsoid model 7.

[0053] Example 8

[0054] like Figure 4 As shown, each set of sensor devices 5 includes a horizontally arranged bracket 5-2, with supports 5-1 provided at both ends of the bracket 5-2, and a laser displacement sensor 5-3 installed on the bracket 5-2.

[0055] Example 9

[0056] like Figure 5 As shown, holes A are slotted on the opposite side walls of the ice water pool 1, and two guide mechanisms 12 are respectively installed in the two holes A; the guide mechanism 12 includes a bottom support platform 12-5 fixed to the inner wall of the ice water pool 1, one end of a lead screw 12-8 is connected to the bottom support platform 12-5, and a bearing is provided at the connection between one end of the lead screw 12-8 and the bottom support platform 12-5 to facilitate the rotation of the lead screw 12-8, a lead screw nut 12-3 is provided on the lead screw 12-8, and guide rails A12-4 are respectively provided in parallel on the opposite sides of the lead screw 12-8, and the two ends of the two guide rails A12-4 are fixed to the side walls of the hole A;

[0057] One side of one of the guide rails A12-4 is equipped with a scale 12-7. The other end of lead screw 12-8 is secured to a hollow bracket 12-2, which is fixed to the opening of hole A, i.e., the inner wall of ice pool 1. One end of lead screw 12-8 passes through the center of bracket 12-2 and connects to control rod 12-1. A bearing A is located at the junction of lead screw 12-8 and control rod 12-1, facilitating rotation of lead screw 12-8 via control rod 12-1. A pulley C12-6 is mounted on the upper surface of lead screw nut 12-3, allowing C12-6 to rotate about its own central axis.

[0058] The two slide rails 12-4 are used to keep the screw nut 12-3 horizontal. The screw 12-8 is rotated by turning the control rod 12-1. At this time, the screw nut 12-3 moves along the screw 12-8. The scale 12-7 is used to determine the position of the pulley C12-6. The cable 11 passes through the pulley C12-6. The guide mechanism 12 is set on both sides of the pool.

[0059] The method for using the test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment comprises the following steps:

[0060] Step 1: Pass the cable 11 through the ellipsoid model 7 and fix it, pour water into the ice water pool 1, and raise the water level to between 30 and 40 cm above the internal circulation flow generator 8 to ensure that the internal circulation flow generator 8 is in a suitable working range. Adjust the control lever 12-1 to drive the screw 12-8 to rotate, so that the pulley C12-6 and the screw nut 12-3 move along the length direction of the screw 12-8. The pulley C12-6 controls the cable 11 to make the ellipsoid model 7 dive to a depth of 1.2D and ensure that the ellipsoid model 7 remains horizontal underwater. Then tighten the cable 11 and start freezing a layer of ice 6.

[0061] Step 2. After the thickness of the ice layer 6 reaches 4 mm, a layer of snow with a thickness of no more than 0.5 mm is evenly covered on the ice surface to facilitate subsequent tests to record crack conditions. The position of the camera 4 is adjusted, and the four sensor devices 5 are fixed according to the pre-calibrated positions. The distance between each sensor device 5 is 4 times the length of the ellipsoid model 7. The support 5-1 remains stable on the slide rails on both sides of the ice water pool 1 (slide rails are pre-designed on both sides of the inner wall of the ice water pool 1). The design of the support 5-1 allows the sensor device 5 to be easily disassembled and adjusted to ensure that the laser displacement sensor 5-3 is located on the motion trajectory of the ellipsoid model 7. Since snow will reflect laser light, a dark marker sheet 15 needs to be arranged on the ice surface. The marker sheet 15 is located directly below the laser displacement sensor 5-3. The laser displacement sensor 5-3 obtains the initial actual distance d0 between itself and the marker sheet 15 by processing the laser signal reflected back by the marker sheet 15. The distance measured during the test is d.

[0062] Step 3: When the internal circulation flow generator 8 is not working, it is in a no-flow condition. The movement speed of the ellipsoid model 7 is set to 0.8m / s and the movement distance is 10m through the console. The camera 4 starts shooting, the laser displacement sensor 5-3 is reset and starts recording data, the servo motor 2 is started to rotate, and the ellipsoid model 7 passes through the test section to observe the cracks on the ice surface. If no cracks are generated, the ellipsoid model 7 is returned to its original position. Since the model movement causes waves, it is necessary to wait for the waves to dissipate. The servo motor is adjusted to make the model movement speed 1m / s. s, increasing by 0.2 m / s each time, repeating the movement until cracks appear in layer 6 of ice. In an instant, the water under the ice layer will wet the snow on the surface of layer 6 through the cracks, producing a color different from the white snow. Wait until no new cracks appear and stop recording. The critical speed and the deflection change curve of the ice plate arrangement point Δd = d-d0 under the conditions of 4 mm ice thickness and 1.2D diving depth are obtained. At the end of the test, the old ice is cleaned, water is added, and layer 6 is re-frozen to prepare for the next set of tests. Subsequently, the diving depth is adjusted to 1.5D and 2D for variable tests.

[0063] Step 4: When the flow direction of the internal circulation flow generator 8 is opposite to the movement direction of the ellipsoid model 7, it is the head-on flow condition. Frozen layer ice 6 is formed. When the ice thickness reaches 4 mm, the internal circulation flow generator 8 is turned on and the flow rate is set to 0.2 m / s to simulate the flow rate of the real polar ocean current. After the flow rate stabilizes, the movement speed of the ellipsoid model 7 is set to 0.8 m / s and the movement distance is set to 10 m through the console. The camera 4 starts shooting, the laser displacement sensor 5-3 is reset and starts recording data, and the servo motor 2 is started to rotate. The ellipsoid model 7 passes through the test section and the cracks on the ice surface are observed. If no cracks are generated, the ellipsoid model 7 is returned to its original position. Since the movement of the model causes waves, it is necessary to wait for the waves to dissipate. The servo motor is adjusted to make the model movement speed 1m / s, increasing by 0.2m / s each time, and repeating the movement until cracks appear in layer 6 of ice. The flow rate is changed to 0.6m / s and 1m / s, and then the diving depth is changed to 1.5D and 2D, and the flow rate is changed to 0.2m / s, 0.6m / s, and 1m / s, and an orthogonal test is carried out.

[0064] Step 5: When the flow direction of the internal circulation flow generator 8 coincides with the direction of movement of the ellipsoid model 7, the current is in the headstream condition. Ice layer 6 is frozen. When the ice thickness reaches 4 mm, the internal circulation flow generator 8 is turned on and the flow rate is set to 0.2 m / s to simulate the actual polar current velocity. Once the flow rate stabilizes, the console sets the movement speed of the ellipsoid model 7 to 0.8 m / s and the movement distance to 10 m. Camera 4 begins recording, laser displacement sensor 5-3 is reset and begins recording data, and servo motor 2 is started. The ellipsoid model 7 moves through the test section, observing for cracks on the ice surface. If no cracks appear, the ellipsoid model 7 is returned to its original position. Since the model's movement generates waves, it is necessary to wait for the waves to dissipate. The servo motor is then adjusted to a speed of 1 m / s, increasing by 0.2 m / s each time. This movement is repeated until cracks appear in the ice layer 6. This completes the test process for the ellipsoid model 7 at a submergence depth of 1.2D.

[0065] The flow rate was changed to 0.6 m / s (corresponding to a diving depth of 1.5D) and 1 m / s (corresponding to a diving depth of 2D), and the diving depth of the ellipsoid model 7 was changed to 1.5D and 2D accordingly, and the same experimental process as that with a diving depth of 1.2D was repeated.

[0066] Orthogonal tests were conducted on the test results of the ellipsoid model 7 at diving depths of 1.2D, 1.5D and 2D, corresponding to flow velocities of 0.2m / s, 0.6m / s and 1m / s, to compare the critical speed and deflection changes of the ice layer 6 under no flow, facing flow and following flow conditions. The test results show that the maximum deflection deformation of the ice plate increases with the increase of the speed of the ellipsoid model 7. As the diving depth of the ellipsoid model 7 increases, the critical speed value also increases. The facing flow state will lead to a decrease in the critical speed, while the following flow state will increase the critical speed of the ice plate destruction. The reason is that the ocean current will reduce the overall wave height and lengthen the wavelength. Conversely, the wave height increases and the wavelength decreases. This phenomenon can provide a basis for the study of the mechanism of wave-making and icebreaking of the ellipsoid under the action of ocean current.

[0067] Figure 6 The following graph shows the maximum deflection of the ice plate as a function of model speed at different immersion depths under no-flow conditions. The graph shows that under the three immersion depth ratios (4 mm ice thickness) conditions, the maximum deformation of the ice surface increases with increasing ship speed. For the immersion depth ratios (the ratio of the vertical distance between the center of the ellipsoid model 7 and the ice surface to the maximum diameter of the ellipsoid model 7) of 1.2D, 1.5D, and 2D, the maximum deformation of the ice surface shows an approximately linear relationship with ship speed at low speeds (0.8 to 1.8 m / s). However, when the speed exceeds 1.8 m / s, the maximum deformation of the ice surface increases rapidly with increasing speed, indicating that the model ice layer undergoes severe damage at this speed.

[0068] The utility model is improved on the basis of an outdoor ice water pool, and a new test device is designed, which has the function of internal circulation flow generation and can tow objects to perform linear motion at a certain water depth. It can well complete the experimental research on the linear motion of an ellipsoid under ice to create waves and break ice in an ocean current environment.

Claims

1. A test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment, characterized by: The invention comprises an ice water pool (1), wherein the ice water pool (1) is provided with a traction mechanism for controlling a cable (11), an ellipsoid model (7) is provided inside the ice water pool (1), and the ellipsoid model (7) is connected to both ends of the cable (11), and a detachable false bottom (9) is also provided inside the ice water pool (1), wherein the detachable false bottom (9) is located below the ellipsoid model (7), and an internal circulation flow generator (8) is provided at both ends of the detachable false bottom (9), and a plurality of groups of sensor devices (5) are equidistantly provided at the upper end of the ice water pool (1) along the length direction of the ice water pool (1), and a camera (4) is also provided above the ice water pool (1), and the camera (4) is located above the sensor device (5).

2. The test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment according to claim 1 is characterized in that: The traction mechanism comprises pulleys A (3) respectively arranged above the two ends of the ice water pool (1); two pulleys B (10) are respectively arranged on the inner walls of the two ends of the ice water pool (1); and guide mechanisms (12) are respectively arranged directly below the two pulleys B (10); one end of the cable (11) is connected to one end of the ellipsoid model (7); the other end of the cable (11) passes through the guide mechanism (12) arranged at one end of the ice water pool (1), the pulley B (10) arranged at one end of the ice water pool (1), the pulley A (3) arranged at one end of the ice water pool (1), the pulley A (3) arranged at the other end of the ice water pool (1), the pulley B (10) arranged at the other end of the ice water pool (1), and the guide mechanism (12) arranged at the other end of the ice water pool (1), and is then connected to the other end of the ellipsoid model (7).

3. The test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment according to claim 2 is characterized in that: The detachable false bottom (9) divides the ice water pool (1) into two parts, the upper part of the detachable false bottom (9) is a flow-making area, and the lower part of the detachable false bottom (9) is a return flow area. The two ends of the detachable false bottom (9) are respectively provided with internal circulation flow-making machines (8).

4. The test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment according to claim 2, characterized in that: A servo motor (2) is connected to the central axis of one of the pulleys A (3).

5. The test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment according to claim 2 is characterized in that: Each group of sensor devices (5) comprises a horizontally arranged bracket (5-2), with supports (5-1) respectively provided at both ends of the bracket (5-2), and a laser displacement sensor (5-3) mounted on the bracket (5-2).

6. The test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment according to claim 5, characterized in that: The two supports (5-1) cooperate with slide rails arranged on both sides of the inner wall of the ice water pool (1).

7. The test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment according to claim 5, characterized in that: Holes A are slotted on the side walls of the ice water pool (1) on both sides, and the guide mechanism (12) is installed in the hole A.

8. The test device for wave-making and ice-breaking by linear motion of an ellipsoid in an ocean current environment according to claim 7, characterized in that: The guide mechanism (12) comprises a bottom support platform (12-5) fixed to the inner wall of the ice water pool (1); one end of a lead screw (12-8) is connected to the bottom support platform (12-5); a lead screw nut (12-3) is provided on the lead screw (12-8); guide rails A (12-4) are provided in parallel on opposite sides of the lead screw (12-8); a scale (12-7) is provided on one side of one guide rail A (12-4); a hollow fixed frame (12-2) is provided at the other end of the lead screw (12-8); one end of the lead screw (12-8) passes through the center of the fixed frame (12-2) and is connected to the control rod (12-1); a pulley C (12-6) is installed on the upper surface of the lead screw nut (12-3).

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