Main scale design method for large-scale seakeeping maneuverability comprehensive pool

Abstract

The invention provides a method for designing the main scale of a large seakeeping maneuverability comprehensive pool, aiming at the problem that the main scale of a traditional test pool cannot be accurately determined. Structurally, the test pool adopts a rectangular layout, a wave making device and a wave absorbing device which are opposite to each other are respectively arranged on long and short sides, and a trailer assembly comprising a main trailer and an auxiliary trailer is also arranged. According to the method, the main scale is determined through different design modules; the length design module superposes multiple sections of lengths to determine the minimum length; the width design module takes the maximum width value required by the seakeeping and maneuverability test; the depth design module determines the minimum depth according to a wave attenuation rule and the like. According to the method, various test requirements are comprehensively considered, the main scale can be accurately determined, sufficient generation and absorption of waves are ensured, the test operation is flexible, reliable conditions are provided for ship model comprehensive tests, and the test accuracy, reliability and efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of experimental water tank technology, and in particular to a method for designing the main dimensions of a large-scale wave-resistant and maneuverable integrated water tank. Background Technology

[0002] Before a ship is put into service, it needs to undergo multiple tests of different types in a test tank, mainly including speed, seakeeping, and maneuverability. Speed ​​studies the ship's ability to overcome resistance and sail at a high speed in calm water with a given main engine power; seakeeping studies the ship's ability to maintain its motion performance and structural integrity in turbulent environments such as wind and waves, as well as its ability to provide a relatively stable environment for the crew and equipment on board; maneuverability studies the ship's ability to maintain or change its course, speed, and position according to the driver's intentions.

[0003] During the ship design phase, scaled-down models are typically used to conduct model tests and optimization studies on the overall navigation performance of the ship in a laboratory tank environment, ensuring the safety, economy, comfort, and mission execution capabilities of the actual ship at sea.

[0004] Traditional water tanks have a single function. For example, specialized water tanks are used for testing and research on speed, seakeeping, and maneuverability. However, when ships sail at sea and encounter wind and waves, they need to meet the comprehensive testing requirements of speed, maneuverability, and seakeeping in wind and waves. Therefore, large-scale comprehensive seakeeping and maneuverability water tanks have become important testing sites for conducting hydrodynamic performance tests on ships and marine engineering.

[0005] When conducting scaled-down model tests in laboratory tanks, to reduce the impact of scale effects and improve the accuracy of test predictions, it is generally required to use a larger scaled-down model. The shipbuilding industry both domestically and internationally has established relevant test procedures or standards that specify requirements for tank model tests. However, using a larger scaled-down model for tank model tests places higher demands on the main dimensions of the test tank. The size and scale of the main dimensions of the tank directly affect the investment in tank construction costs. Therefore, the selection of the main dimensions of the tank must simultaneously consider the requirements of the test procedures or standards and the economic efficiency of tank construction.

[0006] In other words, if the test pool is too large, although it can meet the requirements of various tests for ships in the test pool, the test pool is usually located indoors, resulting in an excessive footprint. At the same time, the size requirements for wave-making and wave-dissipating equipment are also larger, resulting in excessive construction costs. However, if the test pool is too small, it cannot accommodate all the test items, affecting the test results. Ultimately, it will be necessary to build a new test pool, which will also cause additional costs.

[0007] Therefore, under the premise of meeting the requirements of comprehensive ship model testing and relevant test procedures or standards in the shipbuilding industry, and considering the economic efficiency of tank construction, this invention provides a design method for the main dimensions of a large seakeeping and maneuvering comprehensive tank, which designs and determines the main dimensions of the comprehensive tank. Summary of the Invention

[0008] Therefore, it is necessary to address the technical problem that the main dimensions of existing ship test tanks cannot be accurately determined, which leads to high construction costs or limited test results. A design method for the main dimensions of a large-scale integrated seakeeping and maneuverability test tank should be provided. This method will enable the test tank to meet the multi-functional requirements of speed, seakeeping, and maneuverability, while optimizing the spatial layout, reducing construction costs, and ensuring the accuracy and reliability of test data.

[0009] The technical solution adopted in this invention is as follows:

[0010] A method for designing the main dimensions of a large, wave-resistant, maneuverable integrated water tank, comprising:

[0011] The test water tank adopts a rectangular layout, and wave-generating devices and wave-absorbing devices are respectively set on the long and short sides of the test water tank to meet the requirements of wave generation and absorption.

[0012] A trailer assembly is disposed above a test pool, the trailer assembly comprising a main trailer that moves along the length direction and a secondary trailer disposed on the main trailer and moving along the width direction;

[0013] Length design module: Based on the requirements of the wave resistance test, the minimum length of the test pool is determined by superimposing the lengths of the main trailer acceleration section, the model stabilization section, the effective test section and the deceleration section;

[0014] Width design module: Based on the width requirements of the wave resistance test and the maneuverability test, the maximum value of the two is taken to determine the width of the test pool;

[0015] Depth design module: Determine the minimum depth of the test pool based on the wave attenuation law with water depth and the wavelength requirements of the wave resistance test.

[0016] In one embodiment, in the test water tank, the long-side wave-generating device and the wave-dissipating device are arranged in parallel opposite directions, and the short-side wave-generating device and the wave-dissipating device are arranged in parallel opposite directions.

[0017] In one embodiment, the main trailer spans the width of the test pool and moves along its length, while the auxiliary trailer is suspended below the main trailer and moves along its width.

[0018] In one embodiment, the length L of the test pool satisfies:

[0019] L = L 加速段 +L 稳定段+L 测试段 +L 减速段 +L 拖车长度 +L 消波装置长度

[0020] Among them, L 加速段 Length of the main trailer acceleration section; L 稳定段 This is the length of the stable segment of the model's motion;

[0021] L 测试段 L represents the effective test segment length for model tests, including the effective test segment length for regular wave tests and the effective test segment length for irregular wave tests. 减速段 Length of the main trailer deceleration section; L 拖车长度 Main trailer length; L 消波装置长度 The length of the wave-damping device is in the longitudinal direction.

[0022] In one embodiment, the effective test segment length of the regular wave test is:

[0023]

[0024] In the above formula: L m V is the length of the test ship model. m For model test speed.

[0025] In one embodiment, the effective test segment length of the irregular wave test is:

[0026]

[0027] In the above formula: λ is the model scaling ratio, V m N represents the model test speed, and N represents the number of wave splicing operations.

[0028] In one embodiment, the width B of the test pool designed in the width design module satisfies:

[0029] B = max(B 耐波性试验 B 操纵性试验 )

[0030] B 耐波性试验 B represents the width dimension of the test pool in the wave resistance test. 操纵性试验 This refers to the width dimension of the test pool during the maneuverability test.

[0031] In one embodiment, the B 耐波性试验 satisfy:

[0032] B 耐波性试验 =B1+B 2+ B3

[0033] In the formula, B1 is the distance between the center of the ship model and the wave generator on the long side of the test pool; B2 is the distance between the center of the ship model and the end of the wave-damping device on the long side; B3 is the dimension of the wave-damping device on the long side in the width direction.

[0034] In one embodiment, the B 操纵性试验 satisfy:

[0035] B 操纵性试验 =2R+L m ×tgβ+2B s

[0036] In the above formula: R is the radius of the ship model slewing test, L m Let L be the length of the test boat model, tg be the tangent function, β be the maximum test drift angle, and Bs be the safe distance between the model and the pool wall, which is one time the boat length L. m .

[0037] In one embodiment, the minimum depth H of the test pool in the depth design module satisfies:

[0038] H = 0.5 × 1.5 L m =0.75L m

[0039] In the formula, Lm is the length of the ship model.

[0040] The beneficial effects of this invention are as follows:

[0041] This invention features a compact and rational structure, and is easy to operate. By optimizing the length, rationally determining the width, and accurately determining the depth, it comprehensively considers various testing requirements such as speed, seakeeping, and maneuverability. The length design improves testing efficiency and data accuracy; the width design meets the needs of multi-functional testing and enhances the utilization rate of the testing tank; and the depth design ensures effective wave simulation. This method can accurately determine the main dimensions of the testing tank, optimizing the spatial layout, reducing construction costs, and ensuring the accuracy and reliability of test data while meeting the comprehensive testing needs of ship models. It provides an efficient and reliable venue for hydrodynamic performance testing of ships and marine engineering projects, and promotes the development of testing technology in the shipbuilding industry.

[0042] In addition, the present invention also has the following advantages:

[0043] This design method, through a length design module, comprehensively considers the lengths of multiple segments, including the acceleration section of the main trailer, the stabilization section of the model, the effective testing section (including regular and irregular wave tests), and the deceleration section, to accurately determine the minimum length of the test pool. Taking a specific embodiment as an example, given relevant parameters, the minimum length required to meet the wave resistance test requirements can be accurately calculated. This design avoids the problems of excessively long pools leading to large footprints and high construction costs, as well as pools that are too short to meet testing needs. It ensures that the model can complete acceleration, stabilization, testing, and deceleration stages within a suitable length range during the test, improving testing efficiency and data accuracy.

[0044] The width design module is based on the different width requirements of seakeeping and maneuverability tests, determining the test tank width by taking the maximum of the two values. In seakeeping tests, the distance between the model's center and the ends of the long-side wave generator and wave-damping devices, as well as the dimensions of the wave-damping devices in the width direction, are fully considered. In maneuverability tests, the width is determined based on factors such as the model's turning radius and maximum drift angle. This design allows the test tank to meet both the requirements of seakeeping tests for wave generation and full development, and the needs of complex movements such as model turning in maneuverability tests, enabling multi-functional tests to be conducted in a single tank and improving the tank's utilization rate.

[0045] The depth design module precisely determines the minimum depth of the test pool based on the wave attenuation law with water depth and the wavelength requirements of the seakeeping test. By analyzing the variation of the radius of the water mass orbital circle with water depth during wave propagation, and combining this with the wavelength-to-length ratio requirements of the seakeeping model test, the relationship between the minimum depth and the length of the test ship model is derived. This design ensures that the test pool can accurately simulate waves that meet the requirements under different test model lengths, avoiding the impact of insufficient water depth on wave propagation. This guarantees the realism and accuracy of wave simulation in the seakeeping test, providing reliable conditions for the seakeeping test of the ship model. Attached Figure Description

[0046] Figure 1 This is a top view of the test water tank of the present invention.

[0047] Figure 2 for Figure 2 A sectional view of section AA in the middle.

[0048] Figure 3 This is a graph showing the relationship between wave attenuation and water depth in this invention.

[0049] in:

[0050] 100. Test pool; 200. Wave damping device; 201. Short-side wave damping device; 202. Long-side wave damping device; 300. Wave generating device; 301. Short-side wave generating device; 302. Long-side wave generating device; 400. Trailer assembly; 401. Main trailer; 402. Auxiliary trailer. Detailed Implementation

[0051] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0052] This embodiment discloses a main dimension design method for a large-scale integrated water tank with wave resistance and maneuverability. Based on the test objectives of speed, wave resistance, and maneuverability, it includes a length design module, a width design module, and a depth design module, which are used to design and analyze the length, width, and depth of the test water tank 100, respectively, so as to meet the above test requirements while minimizing the occupied area.

[0053] The large-scale wave resistance and maneuverability comprehensive test pool 100 adopts a rectangular layout, usually rectangular. It is necessary to set up corresponding wave-generating devices 300 and wave-damping devices 200 on the long and short sides of the test pool 100 to meet the test requirements. Specifically, a long-side wave-generating device 302 and a long-side wave-damping device 200 are respectively set on the two long sides of the test pool 100, and a short-side wave-generating device 301 and a short-side wave-damping device 201 are set on the short side of the test pool 100.

[0054] Meanwhile, to facilitate the test, a trailer assembly 400 is arranged above the test pool 100. The trailer assembly 400 is usually composed of a main trailer 401, a secondary trailer 402, trailer rails, an electrical control system, etc. The main trailer 401 is erected across the width of the test pool 100 and moves along the length of the test pool 100. The secondary trailer 402 is suspended under the main trailer 401 and moves along the width.

[0055] In this embodiment, the length design module is used to design and analyze the dimensions of the test water tank 100 in the length direction:

[0056] The length of the test tank 100 needs to meet the requirements of the seakeeping test of the ship model, and its minimum length is also the minimum standard to meet the seakeeping test of the ship model. During the model test, the main trailer 401 is located at one end of the length of the test tank 100. After the main trailer 401 starts, it goes through the acceleration, stabilization, testing and deceleration stages. Therefore, the length of the test tank 100 is mainly determined by the following formula:

[0057] L = L 加速段 +L 稳定段 +L 测试段 +L 减速段 +L 拖车长度 +L 消波装置长度

[0058] Among them, the length of the acceleration section of the main trailer 401 is determined, L 加速段 The acceleration section length of the main trailer 401, i.e., the acceleration of the main trailer 401 from 0 m / s to the model test speed V after startup. m The length (in m / s), the acceleration section length of the main trailer 401 is L. 加速段 =V m 2 / 2a 启动加速度 V m For the model test speed, a 启动加速度 The starting acceleration of the main trailer 401 is typically 0.05g to 0.10g, where g is the acceleration due to gravity, taken as 9.81 m / s². 2 .

[0059] In this embodiment, L 稳定段 To determine the length of the stable motion segment of the model, the model speed synchronously accelerates from 0 m / s to the model test speed V during the acceleration of the main trailer 401. m Due to the influence of the model's acceleration inertia, the model needs a certain period of stabilization time in the test pool 100 to ensure the stability of the model's attitude or motion. The length of the stabilization period is L. 稳定段 =V m ×t1, V m t1 is the model test speed and t1 is the model motion stabilization time. t1 is usually taken as 2 to 4 seconds, which is mainly related to the magnitude of the model test speed. The higher the model test speed, the longer the motion stabilization period.

[0060] In this embodiment, the effective test segment length of the model experiment is determined, L 测试段 To determine the effective test section length for the model test, according to the ITTC seakeeping model test procedure and the "Seakeeping Test Procedure for Surface Ship Models" (CB / T3675-2016), in regular wave model tests, there should be at least 10 stable oscillations per voyage, excluding drift waves and stern-angle waves. Considering that the transverse wave test has a higher requirement for the 100mm length of the test tank compared to the crest wave or bow-angle wave test, the design can be based on the 100mm length requirement for the transverse wave model test. To obtain a more complete frequency response transfer function curve, the wavelength-to-length ratio should be 0.5λ / L for the model test. m ~2.5λ / L m The maximum wavelength tested was 2.5L. m Therefore, the effective test segment length for the regular wave test is:

[0061]

[0062] In the above formula: L m V is the length of the test ship model. m For model test speed.

[0063] During irregular wave model testing, the motion response model should encounter more than 200 waves in non-repeating waves. For tests of nonlinear seakeeping events such as deck waves and slamming, the model test time must correspond to at least one hour on a real ship. If the irregular wave test time history curve has N splices, the corresponding test voyage is N+1. To ensure the accuracy of statistical analysis of the test results, the number of splices is usually around 10. Therefore, the effective test segment length for irregular wave testing is:

[0064]

[0065] In the above formula: λ is the model scaling ratio, V m For model test speed.

[0066] In this embodiment, the length of the deceleration section of the main trailer 401 is determined, L 减速段 The length of the deceleration section of the main trailer 401, i.e., the length of the main trailer 401 from the model test speed V. m The length of the deceleration section to 0 m / s for the main trailer 401 is L. 减速段 =V m 2 / 2a 制动加速度 V m For the model test speed, a 制动加速度 The braking acceleration of the main trailer 401 is typically 0.05g to 0.10g, where g is the acceleration due to gravity, taken as 9.81 m / s². 2 .

[0067] Meanwhile, along the length direction, the size of the ship model is smaller than the size of the main trailer 401. Therefore, when the ship model is towed by the main trailer 401, it is completely covered by the main trailer 401. Thus, when considering the length of the test pool 100, only the size of the main trailer 401 needs to be considered.

[0068] In this embodiment, the length of the main trailer 401 is determined, L 拖车长度 The main trailer 401 has a length of 8 to 15 meters along its length.

[0069] In this embodiment, the length of the short-side wave-damping device 201 of the test water tank 100 is determined, L 消波装置长度 The length of the short-side wave-damping device 201 of the test pool 100 (along the length of the test pool 100) is defined. The wave-damping device 200 is usually designed in the form of an arc-shaped wave-damping device 200 or a vertical wave-damping device 200. The wave-damping device 200 can effectively absorb wave reflections generated during the model test. The length of the wave-damping device 200 is mainly determined by the maximum wavelength of effective wave suppression required by the model test, and is usually taken as 6 to 12 m.

[0070] In this embodiment, the width design module is used to design and analyze the width dimension of the test water tank 100:

[0071] The width of the test pool 100 is determined by the width requirements of the wave resistance model test and the maneuverability model test, respectively. The maximum value of the width requirement of the test pool 100 during the two tests is taken. That is, if the width of the test pool 100 can meet the test with higher width requirements, it will necessarily meet the test with lower width requirements.

[0072] That is, B = max(B 耐波性试验 B 操纵性试验 )

[0073] In this embodiment, the design of the 100mm width of the test pool in the wave resistance model test must meet the requirements of the transverse wave model test.

[0074] like Figure 2 As shown, therefore, in the wave resistance model test, the test pool has a width of 100 mm (B). 耐波性试验 satisfy:

[0075] B 耐波性试验 =B1+B 2+ B3

[0076] (a) Distance B1 between the center of the ship model and the wave generator on the long side of the test pool (100 mm)

[0077] Sufficient distance must be maintained between the experimental ship model and the long-side wave generator to meet the requirements for wave generation and full development, and to avoid the influence of wave reflection from the ship model. Generally, the distance B1 between the long-side wave generator and the experimental ship model should be approximately 2.0 to 3.0 times the maximum wavelength λ. max Maximum wavelength λ max Take 1.5 times the length L of the ship model m ,Right now:

[0078] B1 = (2.0 ~ 3.0)λ max = (2.0~3.0)×1.5×L m = (3.0~4.5)L m

[0079] (b) Distance B2 between the center of the ship model and the end of the long-side wave-damping device 202

[0080] The test ship model must be sufficiently far from the end of the long-side wave-damping device 202 to avoid the impact of wave reflection from the long-side wave-damping device 202 on the ship model. B2 must be at least one times the length of the ship model, i.e., B2 ≥ 1.0L. m .

[0081] (c) Dimension B3 of the long-side wave-damping device 202 in the width direction

[0082] A wave-damping device 200 needs to be installed on the opposite bank of the long-side wave generator to meet the wave-damping requirements. The length of the wave-damping device 201 on the short side of the test pool 100 is determined in the same way, with B3 being 6 to 12 meters.

[0083] In this embodiment, the design method for the width of the test pool (100mm) in the maneuverability test is as follows:

[0084] The constraint model rotation maneuverability test width B in the comprehensive test tank 100 操纵性试验 The requirements can be determined according to the following formula:

[0085] B 操纵性试验 =2R+L m ×tgβ+2B s

[0086] In the above formula: R is the radius of the ship model slewing test, L m Let L be the length of the test boat model, tg be the tangent function, β be the maximum test drift angle, and Bs be the safe distance between the model and the pool wall, approximately one time the boat length L. m .

[0087] In this embodiment, the depth design module is used to design and analyze the dimensions of the test water tank 100 in the depth direction:

[0088] The depth H of the test pool 100 is mainly determined by the wave simulation requirements of the wave resistance model test. During wave propagation, the radius of the orbital circle of a water particle in deep water decreases rapidly and exponentially with its depth relative to the water surface, which can be expressed as:

[0089] ξ z / ξ a =e -kz

[0090] In the above formula: ξ z Let ξ be the wave amplitude at the water surface. a Let be the wave amplitude at a certain depth below the water surface, z be the average depth of the water particle below the water surface, and k be the wave number, which is related to the wavelength λ by k = 2π / λ. Based on the above expression, the wave attenuation relationship with water depth can be graphically represented as follows: Figure 3 In the figure, the horizontal axis represents the ratio of water depth to wavelength, z / λ, and the vertical axis represents the ratio of wave amplitude at a certain depth below the water surface to wave amplitude at the water surface, ξ. z / ξ a ,from Figure 3 As can be seen, when the water depth exceeds 0.5 times the wavelength, the water depth has almost no effect on wave propagation.

[0091] Different experimental model lengths L mDuring the seakeeping model test, according to the ITTC seakeeping model test procedure, in order to obtain a more complete frequency response transfer function curve, it is required that the wavelength-to-ship length ratio be selected of 0.5λ / L during the model test. m ~2.5λ / L m Typically, domestic and international test pools with 100 pairs of wave-generating systems require a minimum wave simulation capability within a wavelength λ range of 0.5L. m ~1.5L m This is because the wavelength-to-length ratio exceeds 1.5λ / L. m The motion response value of the time model is already relatively small, greater than 1.5L. m The test wavelength is determined by using depth-based correction during wave generation. Therefore, based on the wave attenuation relationship with water depth, the minimum depth H of the 100mm test pool is:

[0092] H = 0.5 × 1.5 L m =0.75L m

[0093] In the formula, L m The length of the test ship model.

[0094] Example 1

[0095] I. Regarding the design of the length of the test water tank 100, when the starting acceleration a of the main trailer 401 of the test water tank 100 is... 启动加速度 The braking acceleration is 0.05g, a 制动加速度 The weight is 0.05g, the scale ratio λ of the experimental model is 30, and the model length L is... m The model velocity is 6.0m. m When the speed is 2.5 m / s, then:

[0096] (1)L 加速段 =V m 2 / 2a 启动加速度 =2.5 2 / (2×0.05×9.81)=6.4m

[0097] (2)L 稳定段 =V m ×t1=2.5×2=5.0m

[0098] (3) Regular wave test:

[0099] Irregular wave experiment:

[0100] (4)L 减速段 =V m 2 / 2a 制动加速度=2.5 / (2×0.05×9.81) = 6.4m

[0101] (5)L 拖车长度 =12.0m

[0102] (6)L 消波装置长度 =9.0m

[0103] Therefore, the minimum length of the test pool 100 is:

[0104] L = L 加速段 +L 稳定段 +L 测试段 +L 减速段 +L 拖车长度 +L 消波岸长度

[0105] =6.4+5.0+149.4+6.4+12.0+9.0=188.2m

[0106] II. Design of the 100mm width of the test pool: (1) Design of the 100mm width of the wave resistance model test pool

[0107] When the length of the test model is L m When the length is 6.0m, then:

[0108] B1 = 4.5 × L m =4.5 × 6.0 = 27.0m

[0109] B2 = 1.0L m =1.0 × 6.0 = 6.0m

[0110] B3 = 9.0m

[0111] Therefore, the minimum width of the 100mm wave-resistance model test pool is:

[0112] B 耐波性试验 =B1+B 2+ B3 = 27.0 + 6.0 + 9.0 = 42.0m

[0113] (2) Design of a 100mm wide test tank for the operational model

[0114] When the length of the test model is L m The length is 6.0m, and the test radius R is 3.0L. m The maximum experimental drift angle β was 20°, and Bs was the safe distance of the model from the pool wall, which was 1.0L. m At that time, the minimum width of the maneuverability model test pool 100 is:

[0115] B 操纵性试验 =2R+L m ×tgβ+2B s=2×3.0×6.0+6.0×tg20°+2×6.0=39.7m

[0116] Therefore, the wave resistance model test was taken into account, while also meeting the requirements of the maneuverability model test.

[0117] That is, the width B of the test pool 100 is B = max(B 耐波性试验 B 操纵性试验 =42.0m, the width of the test pool 100 is at least 42.0m.

[0118] III. For the design of a test pool with a depth of 100 mm, when the model length L... m When the depth is 6.0m, therefore, based on the wave attenuation relationship with water depth, the minimum depth H of the test pool is:

[0119] H = 0.5 × 1.5 L m =0.75L m =0.75 × 6.0 = 4.5m

[0120] That is, the depth of the test pool 100 is 4.5m.

[0121] This invention features a compact and rational structure, and is easy to operate. By optimizing the length, rationally determining the width, and accurately determining the depth, it comprehensively considers various testing requirements such as speed, seakeeping, and maneuverability. The length design improves testing efficiency and data accuracy; the width design meets the needs of multi-functional testing and enhances the utilization rate of the water tank; and the depth design ensures effective wave simulation. This method can accurately determine the main dimensions of the 100mm test tank, optimizing the spatial layout, reducing construction costs, and ensuring the accuracy and reliability of test data while meeting the comprehensive testing requirements of ship models. It provides an efficient and reliable venue for hydrodynamic performance testing of ships and marine engineering, and promotes the development of testing technology in the shipbuilding industry.

[0122] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A method for designing the main dimensions of a large, wave-resistant, maneuverable integrated water tank, characterized in that: include: The test water tank adopts a rectangular layout, and wave-generating devices and wave-absorbing devices are respectively set on the long and short sides of the test water tank to meet the requirements of wave generation and absorption. A trailer assembly is disposed above a test pool, the trailer assembly comprising a main trailer that moves along the length direction and a secondary trailer disposed on the main trailer and moving along the width direction; Length design module: Based on the requirements of the wave resistance test, the minimum length of the test pool is determined by superimposing the lengths of the main trailer acceleration section, the model stabilization section, the effective test section and the deceleration section; Width design module: Based on the width requirements of the wave resistance test and the maneuverability test, the maximum value of the two is taken to determine the width of the test pool; Depth design module: Determine the minimum depth of the test pool based on the wave attenuation law with water depth and the wavelength requirements of the wave resistance test.

2. The design method according to claim 1, characterized in that, In the test water tank, the long-side wave-generating device and the wave-dissipating device are arranged in parallel opposite directions, and the short-side wave-generating device and the wave-dissipating device are arranged in parallel opposite directions.

3. The design method according to claim 1, characterized in that, The main trailer spans the width of the test pool and moves along its length, while the auxiliary trailer is suspended below the main trailer and moves along its width.

4. The design method according to claim 1, characterized in that, The length L of the test pool designed in the length design module satisfies: L=L 加速段 +L 稳定段 +L 测试段 +L 减速段 +L 拖车长度 +L 消波装置长度 Among them, L 加速段 Length of the main trailer acceleration section; L 稳定段 This is the length of the stable segment of the model's motion; L 测试段 L represents the effective test segment length for model tests, including the effective test segment length for regular wave tests and the effective test segment length for irregular wave tests. 减速段 Length of the main trailer deceleration section; L 拖车长度 Main trailer length; L 消波装置长度 The length of the wave-damping device is in the longitudinal direction.

5. The design method according to claim 4, characterized in that, The effective test segment length of the regular wave test is: In the above formula: L m V is the length of the test ship model. m For model test speed.

6. The design method according to claim 4, characterized in that, The effective test segment length of the irregular wave test is: In the above formula: λ is the model scaling ratio, V m N represents the model test speed, and N represents the number of wave splicing operations.

7. The design method according to claim 1, characterized in that, The width B of the test pool designed in the width design module satisfies: B=max(B 耐波性试验 ,B 操纵性试验 ) B 耐波性试验 B represents the width dimension of the test pool in the wave resistance test. 操纵性试验 This refers to the width dimension of the test pool during the maneuverability test.

8. The design method according to claim 7, characterized in that, The B 耐波性试验 satisfy: B 耐波性试验 =B1+B 2+ B3 In the formula, B1 is the distance between the center of the ship model and the wave generator on the long side of the test pool; B2 is the distance between the center of the ship model and the end of the wave-damping device on the long side; and B3 is the dimension of the wave-damping device on the long side in the width direction.

9. The design method according to claim 7, characterized in that, The B 操纵性试验 satisfy: B 操纵性试验 =2R+L m ×tgβ+2B s In the above formula: R is the radius of the ship model slewing test, L m Let L be the length of the test boat model, tg be the tangent function, β be the maximum test drift angle, and Bs be the safe distance between the model and the pool wall, which is one time the boat length L. m .

10. The design method according to claim 1, characterized in that, The minimum depth H of the test pool in the depth design module satisfies: H=0.5×1.5L m =0.75L m In the formula, Lm is the length of the ship model.

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