KR100973756B1 - Experimental apparatus and method of ships - Google Patents

Experimental apparatus and method of ships Download PDF

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Publication number
KR100973756B1
KR100973756B1 KR1020100010327A KR20100010327A KR100973756B1 KR 100973756 B1 KR100973756 B1 KR 100973756B1 KR 1020100010327 A KR1020100010327 A KR 1020100010327A KR 20100010327 A KR20100010327 A KR 20100010327A KR 100973756 B1 KR100973756 B1 KR 100973756B1
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South Korea
Prior art keywords
model ship
ship
movable frame
frame
test
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KR1020100010327A
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Korean (ko)
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김훤모
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주식회사 태형중공업
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    • B63B9/02—
    • B63B9/08—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/02—Wind tunnels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes
    • G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
    • G09B9/06—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of ships, boats, or other waterborne vehicles

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)

Abstract

PURPOSE: A model ship test device and a test method using the same are provided to comprehensively measure the resistance generated in a model ship by considering even air resistance as well as underwater resistance. CONSTITUTION: A model ship test device comprises a circulating water channel, a fixed frame(310), a movable frame(320), a first sensor(330), and a second sensor(340). The circulating water channel provides a test section in which a model ship is set. The fixed frame is fixed on the upper side of the test section. The movable frame is arranged between the fixed frame and the test section. The first sensor interlinks the fixed frame and the movable frame and senses the X-axial displacement of the movable frame. The second sensor connects the movable frame to both sides of the model ship and senses the Z-axial displacement of the movable frame with respect to the model ship.

Description

Model ship test apparatus and test method using the same {EXPERIMENTAL APPARATUS AND METHOD OF SHIPS}

The present invention relates to a model ship testing apparatus and a test method using the same, and more specifically, by combining the circulating tank and the wind tunnel to detect the water resistance and air resistance applied to the model ship by water and wind in combination, The present invention relates to a model ship test apparatus capable of grasping posture changes and a test method using the same.

The ship is constantly affected by the waves and winds while it is in operation, and is shaken in six directions. This is called the six-freedom movement of the ship.

When the length direction connecting the ship's bow and stern is X axis, the width direction connecting port and starboard is Y axis, and the height direction of the ship is Z axis, the ship's 6-degree of freedom movement is along the X axis direction. Surge moving forward and backward, Sway moving left and right along the Y axis direction, Up and down swing moving up and down along the Z axis direction, and Y axis moving around the X axis like Seesaw There is a roll, a pitch that the X-axis moves like a seesaw around the Y-axis, and a yaw that the athlete turns left and right about the Z-axis.

This six-degree of freedom movement is caused by frictional resistance caused by the hull contacting water, air resistance caused by the hull and superstructure exposed to the air, and surplus resistance by water contacting other accessories. .

At this time, the underwater resistance including friction resistance and surplus resistance occupies most of the total resistance generated in the ship, while the air resistance occupies a relatively small proportion.

Therefore, it is true that a simulated flight test on a ship is only an experiment that measures only underwater resistance. However, these experiments overlook the fact that air resistance is not only a resistance of its own but also a negligible factor that increases the underwater resistance by changing the attitude of the ship.

That is, the test apparatus and method for measuring only the underwater resistance as in the prior art are often insufficient to interpret the motility of the model ship objectively and in multiple angles.

Therefore, in order to compensate for this, there is a need for a practical model ship testing apparatus and method that deals with air resistance in combination.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a model ship test apparatus and a test method using the same that can simultaneously measure the underwater resistance and air resistance of the model ship.

In order to achieve the above object, the present invention provides a test section in which a model ship is installed, and a flow tank providing water flowing through the test section; A fixed frame fixed to an upper portion of the test section; A movable frame disposed between the fixed frame and the test section and having the model ship installed therein; A first sensing unit which connects the fixed frame and the movable frame and detects an X-axis displacement of the movable frame in a longitudinal direction connecting the bow and stern of the model ship; And a second sensing unit connecting the movable frame to the sides of the model ship and sensing a Z-axis displacement with respect to the sides of the model ship.

The apparatus may further include a wind tunnel including a wind tunnel disposed along the length direction between the movable frame and the model ship and having a lower wall disposed in the test section, and an impeller generating wind in the wind tunnel. It features.

The movable frame may include a main frame above the model ship and a longitudinal frame extending from the main frame and disposed to face left and right of the model ship, wherein the second sensing unit is a bow of the vertical frame and the model ship. It is characterized by connecting the stern and the stern.

In addition, the second detection unit coupling means fixed to both sides of the model ship; Connecting means having both sides rotatably connected to the movable frame and the coupling means and having a variable length; And it characterized in that it comprises a rotation sensor for detecting a rotation angle with respect to the connecting portion of the movable frame and the connecting means.

The first sensing unit may further include: a fixing bar extending downward of the fixing frame; A displacement sensor installed at a lower end of the fixing bar; A connector fixed to the movable frame; A connecting rod connected to the connector and penetrating the displacement sensor; And weights provided at the ends of the connecting rods.

The apparatus may further include a support connecting the fixed frame and the movable frame through a ball joint or a universal joint.

In addition, in order to achieve the above object, the present invention provides a water tank provided with a test section in which a model ship is disposed, and a return tank provided with a pump for generating a flow of water in the water tank; A wind tunnel provided with a wind tunnel passing through an upper portion of the test section, and an impeller for generating wind in the wind tunnel; And a model ship installed in the test section, wherein the model ship includes a first sensing unit for sensing a longitudinal displacement of the model ship and a second sensing unit for sensing a lift height displacement of the model ship. A model ship testing method using a device comprising the steps of: a) setting output criteria of a pump and an impeller for each speed; b) installing a model ship on a ship testing apparatus; c) initializing the first sensing unit and the second sensing unit; d) operating the pump and the impeller; And e) processing the measured values of the first sensing unit and the second sensing unit through an external data processing apparatus.

The method may further include repeating the steps d) to e) by changing the outputs of the pump and the impeller.

Model ship test apparatus and a test method using the same according to the present invention has the effect of comprehensively measuring the overall resistance generated in the model ship in consideration of the underwater resistance as well as the air resistance.

In addition, it is possible to grasp the change of attitude of the model ship in various angles with respect to the flow of water and wind through the simulation of the model ship.

In addition, the objective test results for resistance and attitude changes occurring in the model ship can be used to derive useful interpretations of actual ship's kinetic performance and rollover and reflect them in the actual ship design.

In addition, there is an effect that can obtain a higher value added by grasping the seasickness of the ship and designing and building a leisure vessel in consideration of this.

1 is a schematic diagram of a ship testing apparatus according to the present invention.
Figure 2 is a perspective view showing the installation of the ship test apparatus according to the present invention.
Figure 3 is a perspective view showing a second detection unit of the ship test apparatus according to the present invention.
Figure 4 is a state ship model ship installed in the ship test apparatus installation unit according to the invention.
5 is a front view showing a transverse shaking in the ship test apparatus according to the present invention.
Figure 6 is a side view showing a driven yaw in the ship experimental apparatus according to the present invention.
Figure 7 is a perspective view showing a wind tunnel of the ship test apparatus according to the present invention.
8 is a flow chart showing a ship test method according to the present invention.

Hereinafter, an embodiment of a ship test apparatus and a test method using the same according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a ship testing apparatus according to the present invention and looks at the outline of the present invention with reference to the following.

Vessel test apparatus 100 according to the present invention by applying the water (B) and wind (C) to the model ship 500 by combining the flow tank 200 and the wind tunnel 400 to change the motility and posture of the vessel To measure, the configuration for this includes a flow tank 200, a wind tunnel 400, the installation unit 300.

At this time, the flow tank 200 provides a flow of water (B) to the lower portion of the test section (A) in which the model ship 500 is installed, and the wind tunnel 400 of the wind (C) above the test section (A) Providing a flow, the installation unit 300 properly places the model ship 500 in the test space (A), while the shaking of the model ship 500 in response to the flow of water (B) and wind (C) Calculate as an objective number.

As a result, the model ship test apparatus 100 according to the present invention determines the overall resistance of the model ship 500 including the underwater resistance and air resistance and observe the change in attitude to analyze the motility that the actual ship will take while in operation. can do. It can also be applied to ship design to build better ships.

Looking at each of them in more detail as follows.

First, look at the flow tank 200.

The circulating water tank 200 provides a flow of water B rectified and straightened under the test section A in which the model ship 500 is installed, and includes a water tank 210 and a pump 220.

The water tank 210 provides a predetermined straight section with the upper surface open as shown in FIG. 1, and preferably has a side shape similar to a playground track so that the water B can be infinitely circulated and the upper portion of the water tank 210. A straight section is provided with a predetermined width and length.

A test section A in which the model ship 500 is disposed is formed in the straight section as described above, and the water B flowing through the test section A is rectified to go straight at a constant speed.

Therefore, the rectified and straight water (B) gives the fixed model ship 500 the water flow of the same conditions as when the model ship is advanced.

In addition, the side wall of the water tank 210 of the test section (A) is provided with a transparent material so that the tester can observe the inside.

The pump 220 regulates the flow rate of the water (B) by controlling the output and circulates the water (B) in a predetermined direction.

In addition, the more detailed configuration and operation of the circulating water tank 200 used in the present invention is common to those used in model experiments of the ship, and will be obvious to those skilled in the art, and description thereof will be omitted.

Next, look at the installation unit 300.

For a more detailed description thereof, please refer to the accompanying drawings of FIG. 1.

2 is a perspective view showing the installation portion 300 of the model ship test apparatus according to the present invention, Figure 3 is a perspective view showing a second detection unit 340 of the model ship test apparatus according to the present invention, Figure 4 5 is a state diagram showing a model ship 500 installed in the installation portion 300 of the model ship test apparatus according to the invention, Figure 5 is a front view showing the lateral fluctuation of the model ship 500 in the model ship test apparatus according to the present invention 6 is a side view showing the driven yaw of the model ship 500 in the model ship experimental apparatus according to the present invention.

The installation unit 300 appropriately arranges the model ship 500 in the test space A of the model ship testing apparatus according to the present invention, while the model ship 500 responds to the flow of water (B) and wind (C). In order to calculate the fluctuation of) as an objective value, the installation unit 300 is a longitudinal direction (X-axis) of the fixed frame 310 and the movable frame 320 and the movable frame 320 disposed up and down on the test section A. Direction) to detect the displacement and the vertical displacement of the first sensing unit 330 connecting the fixed frame 310 and the movable frame 320, starboard and port (hereinafter referred to as a lateral port) of the model ship 500 And a second sensing unit 340 connecting the model ship 500 and the movable frame 320.

The fixed frame 310 is a support structure for supporting the movable frame 320 on the test section (A), preferably connecting the stern and the stern of the model ship 500 at a position higher than the superstructure of the model ship 500. Keep horizontal along the length. The fixed frame 310 may be fixed to the ground or the flow tank 200.

The movable frame 320 is disposed between the fixed frame 310 and the water surface, and the model ship 500 is installed therein, and moves together with the model ship 500 that surges back and forth in the test section A. Preferably, the main frame 321 connected to the fixed frame 310 and the main frame 321 is provided with a longitudinal frame 323 extending to both sides of the model ship 500.

At this time, the main frame 321 is horizontally extended in the longitudinal direction from the bottom of the fixed frame 310, the vertical frame 323 is orthogonally extended horizontally in the main frame 321 and both ends are bent downwardly extended.

In particular, the vertical frame 323 extends horizontally orthogonally from the leading end above the model ship 500 bow side of the main frame 321 and the rear end above the stern side, and both ends are bent downward.

The longitudinal bar 325 is connected to the lower end of the longitudinal frame 323 in the longitudinal direction, the length bar 325 is coupled to both sides of the bow, the stern of the model ship 500 as shown in FIG. The two sensing units 340 are rotatably connected.

As a result, the bow and stern of the model ship 500 are free to move up and down, respectively.

That is, the model ship 500 installed in the ship testing apparatus according to the present invention can be vertical swing, lateral swing as shown in FIG.

At this time, the lower end of the longitudinal frame 323 is disposed on both sides of the bow, the stern of the model ship 500 and the second sensing unit 340 is connected to the longitudinal frame 323 so as to be rotatable and the length bar 325 is May be omitted.

The first detecting unit 330 is a displacement sensor that connects the fixed frame 310 and the movable frame 320 and detects the displacement of the movable frame 320. The first sensor 330 is a relative position of the movable frame 320 with respect to the fixed frame 310. By detecting the longitudinal displacement (hereinafter referred to as "X-axis displacement"), the displacement of the forward and backward swing of the model ship 500 is calculated, and the experimenter can interpret the total resistance applied to the model ship 500 through the corresponding value. Can be.

To this end, the first sensing unit 330 is preferably a fixed bar 331 vertically extending downward of the fixed frame 310, displacement detector 333 installed on the lower end of the fixed bar 331, the main frame ( The connector 337 fixed to the 321, the connecting rod 335 to horizontally penetrate horizontally through the upper end of the connector 337 and the lower end of the displacement sensor 333, the other side of the connector 337 of both ends of the connecting rod 335 It includes a weight 339 provided at the end.

Here, the upper end is fixed to the fixed bar 331, the lower end is connected to the connecting rod 335, the displacement sensor 333 detects the X-axis displacement of the movable frame 320 to move by the forward and backward swing of the model ship 500 corresponding The displacement value is transmitted to a data processing device (not shown) connected to the outside.

For reference, the weight 339 not described above can adjust the draft of the model ship installed in the movable frame 320 by the adjustment of its position at the end of the connecting rod 335.

In addition, the main frame 321 extends vertically from the lower surface of the fixed frame 310 separately from the first sensing unit 330 and is fixed by the support frame 311 provided with a joint 313 at the end thereof. Can be connected. In this case, the joint 313 may be a ball joint or a universal joint.

As a result, the movable frame 320 is more stably coupled to the fixed frame 310 and the relative movement of the movable frame 320 with respect to the fixed frame 310 is limited to an appropriate range.

The second detection unit 340 is a displacement sensor for connecting the movable frame 320 and the model ship 500 and detects the vertical displacement of both sides of the model ship 500, the vertical displacement of both sides of the model ship 500 (hereinafter, "Z-axis displacement") is detected by the rotation angle of the second sensing unit 340 to measure the Z-axis displacement of both sides of the model ship 500 and the stern, and accordingly the vertical swing of the model ship 500, Lateral fluctuations and longitudinal fluctuations can be calculated to interpret the overall postural change.

To this end, the second sensing unit 340 is preferably both ends of the coupling means 341, the coupling means 341 and the length bar 325 of the longitudinal frame 323 is fixed to the outer surface of the model ship 500 The rotatable connection means 342 is connected to the variable length, the length bar 325 and the rotation sensor 347 for detecting the rotation angle of the connection portion of the connection means 342.

Here, the coupling means 341 is preferably coupled to the outer surface of the model ship 500 by vacuum suction.

In addition, the connecting means 342 is divided into a main connecting means 343 and a thinner longitudinal connecting means 344 and the longitudinal connecting means 344 protrude or extend in the longitudinal direction to the main connecting means 343 Low friction means (not shown) should be provided on the contact surface of the connecting means 343 and the longitudinal connecting means 344 to be extended and shortened without interference.

In addition, when the connection means 342 is disposed inside the wind tunnel 410 as described below, it becomes an impure element to add air resistance when subjected to wind. Therefore, the connecting means 342 is preferably provided with a symmetrical airfoil coinciding with the movement path of the air where the chord line is straight so as to minimize the influence on the flow of air.

Further, in order to obtain a more accurate experimental value, the coupling means 341 and the connecting portion of the length bar 325 and the connecting means 342 should be rotated without interference. Therefore, as shown in FIG. 3, the coupling means 342 and the coupling means 341 are the universal joints 345 which are sensitively rotatable, and the connecting means 342 and the length bar 325 are radially rotatable. It is preferable that the rotation shaft is connected to 346.

In addition, it will be apparent to those skilled in the art that other configurations for interference-free rotation and length changes can be applied.

Rotation sensor 347 detects the rotation of the connecting portion of the connecting means 342 and the length bar 325, the rotation of the connecting means 342 according to the vertical movement of the ship side of the model ship 500 based on the initial connection angle Detects the angle and delivers it to a data processing device (not shown) connected to the outside.

Next, look at the wind tunnel (400).

The wind tunnel 400 has the following configuration in order to be grafted to the flow tank 200, a detailed description thereof will be described with reference to FIG. 7 attached with FIG.

7 is a perspective view showing a wind tunnel 410 of the ship test apparatus according to the present invention.

The wind tunnel 400 is provided to flow the wind (C) rectified to the upper portion of the test section (A) to go straight, preferably the wind passing through the upper portion of the test section (A) along the longitudinal direction (X-axis direction) The passage includes a wind tunnel 410 and an impeller 420 for generating wind moving in the same direction and speed as the flow of water in the wind tunnel 410.

Here, the wind tunnel 410 penetrates the inside of the movable frame 320 in the longitudinal direction (X-axis direction).

Such a wind tunnel 410 is a tube form enclosed by four sides of the inner cross-section of the square to rectangular, but the wind tunnel 410 of the wind tunnel 400 applied to the ship testing apparatus according to the present invention is floating on the water surface The lower wall is omitted as much as the test section (A) to accommodate the model ship 500 in the interior.

In addition, the wind tunnel 410 is so as not to interfere with the movement of the movable frame 320, each wall is spaced apart from the model ship 500, that is, the upper wall 411 is the maximum of the superstructure of the model ship 500 The two side walls 413 are spaced apart from both sides of the model ship 500 as much as possible.

In addition, the lower end of both side wall 413 is higher than the length bar 325 so as not to interfere with the rotation and longitudinal retraction of the connecting means 342 connected to the length bar 325.

On the other hand, both side walls 413 of the wind tunnel 410 is provided with a through hole (not shown) in the corresponding portion so as not to interfere with the rotation and longitudinal movement of the connecting means 342 and the bottom may be locked below the surface of the water have.

That is, the wind tunnel 410 does not interfere with the movement of the movable frame 320, and the upper wall 411 and both side walls 413 are spaced apart from the model ship 500 as much as possible, so as to friction with the inner wall of the wind tunnel 410. To avoid the vortices generated by the air flow to the model ship 500 is ideally rectified and flows straight.

Wind rectified and thus straight (C) is given to the fixed model ship 500 the wind flow of the same conditions as when the model ship 500 is advanced.

The impeller 420 generates wind so that the wind moves in the same direction as the flow of water in the wind tunnel 410, and the output of the impeller 420 is interlocked with the output of the pump 220 such that a wind speed equal to the flow rate of water is generated. Can be.

The interlocking of the impeller 420 and the pump 220 in this regard can be apparent to those skilled in the art using an external controller (not shown), and a description thereof will be omitted.

In addition, the wind tunnel 400 may be provided with an impeller 420 disposed on the bow side of the model ship 500 to blow wind into the wind tunnel 410, but preferably more ideal air in the test section (A) It is preferable that the impeller 420 is disposed at the stern side of the model ship 500 by adopting a negative pressure type to form a flow of the ship.

In addition, the side wall of the wind tunnel 410 of the test section (A) is provided with a transparent material so that the experimenter can observe the inside.

In addition, the more detailed configuration and operation of the wind tunnel 400 used in the present invention, such as a rectifier is common to those used in the wind tunnel experiment, which will be apparent to those skilled in the art, and a description thereof will be omitted.

Hereinafter, look at the test method of the ship using the ship tester according to the present invention in detail.

8 is a test flowchart of a ship testing apparatus according to the present invention.

First, the output reference of the pump 220 and the impeller 420 for each speed is determined (st100).

The pump 220 and the impeller that can provide a flow rate and wind speed corresponding to the virtual speed of the model ship 500 through an experiment for operating the ship test apparatus 100 that is not installed model ship 500 ( An output reference of 420 is set.

For example, if you want to perform the experiment by adjusting the flow rate and wind speed through the test section (A) to 5 m / s, 10 m / s, 15 m / s, 20 m / s, respectively The output values of the pump 220 and the impeller 420 to be measured are determined in advance through experiments.

Next, the model ship 500 is installed in the ship test apparatus 100 (st200).

Coupling means 341 are respectively coupled to the bow and stern side of the model ship 500 to install the model ship 500 into the movable frame 320.

Then, the draft is adjusted by adjusting the position of the weight 339.

Next, the first sensing unit 330 and the second sensing unit 340 are initialized (st300).

An initial value delivered from the first sensing unit 330 and the second sensing unit 340 to an external data processing apparatus (not shown) is zero adjusted.

Next, the pump 220 and the impeller 420 are operated (st400).

By operating the pump 220 and the impeller 420 at the set output, the model ship 500 is placed at the flow rate and wind speed of the speed.

In this case, the model ship 500 has a longitudinal displacement against the water and the wind, and as shown in Figs. 5 to 6, both sides of the bow and stern are shaken to take respective postures. 330 and the second detector 340 detect the corresponding displacement and rotation angle.

Next, an external data processing apparatus (not shown) transmits the measured values for the displacement and the rotation angle detected by the first and second sensing units 330 and 340 (st500).

Next, the process of st400 to st500 is repeated while changing the output of the pump 220 and the impeller 420 (st600).

This is to measure the rotational angle according to the longitudinal displacement and the change in the height of the bow and stern of the bow and stern by speed step by changing the flow velocity and wind speed step by step as the speed of the model ship 500 virtually changes.

Next, using the measured data stored in the calculation using the formula equation and interpreted (st700).

Therefore, the resistance of the real ship can be estimated by substituting the scale ratio of the model ship 500 using the measurement data.

Motion Sickness Index can also be estimated, which is an important item that can be a measure of price in crew fatigue and leisure ships during long hours of sailing.

The above description is only a preferred embodiment of the present invention, and there may be various modifications. However, if these modifications are included in the technical spirit of the present invention will be within the scope of the present invention, the scope of the present invention can be easily understood by those skilled in the art through the following claims.

100: vessel test apparatus 200: circulating water tank
210: water tank 220: pump
300: installation unit 310: fixed frame
311: support 313: joint
320: movable frame 321: main frame
323: vertical frame 325: length bar
330: first detection unit 331: fixed bar
333: displacement sensor 335: connecting rod
337 connector 339 weight
340: second detection unit 341: coupling means
342: connecting means 343: main connecting means
344: longitudinal connection means 345: universal joint
346: bearing 347: rotation sensor
400: wind tunnel 410: wind tunnel
411: upper side wall 413: both side walls
420: Impeller 500: Model Ship
A: Test section B: Water
C: wind

Claims (8)

A circulating water tank providing a test section in which a model ship is installed and providing water flowing through the test section;
A fixed frame fixed to an upper portion of the test section;
A movable frame disposed between the fixed frame and the test section and having the model ship installed therein;
A first sensing unit which connects the fixed frame and the movable frame and detects an X-axis displacement of the movable frame in a longitudinal direction connecting the bow and stern of the model ship; And
And a second sensing unit connecting the movable frame and the ships of the model ship and sensing a Z-axis displacement of the ships of the model ship.
The method according to claim 1,
Model ship test further comprising a wind tunnel disposed between the movable frame and the model ship in the longitudinal direction and omitted the lower wall located in the test section, and an impeller for generating wind in the wind tunnel. Device.
The method according to claim 1,
The movable frame
A main frame above the model ship and a longitudinal frame extending from the main frame and disposed to face left and right of the model ship,
The second detecting unit
Model ship test apparatus for connecting the bow and stern Yang Hyun of the vertical frame and the model ship.
The method according to any one of claims 1 to 3,
The second detecting unit
Coupling means fixed to both sides of the model ship;
Connecting means having both sides rotatably connected to the movable frame and the coupling means and having a variable length; And
Model ship test apparatus including a rotation sensor for detecting the rotation angle of the connecting portion of the movable frame and the connecting means.
The method according to claim 1,
The first detection unit
A fixed bar extending downward of the fixed frame;
A displacement sensor installed at a lower end of the fixing bar;
A connector fixed to the movable frame;
A connecting rod connected to the connector and penetrating the displacement sensor; And
Model ship test apparatus comprising a weight provided at the end of the connecting rod.
The method according to claim 1,
Model ship testing apparatus further comprises a support for connecting the fixed frame and the movable frame via a ball joint or a universal joint.
A return tank provided with a test section in which a model ship is arranged and a pump for generating a flow of water in the tank; A wind tunnel provided with a wind tunnel passing through an upper portion of the test section, and an impeller for generating wind in the wind tunnel; And a model ship installed in the test section, wherein the model ship includes a first sensing unit for sensing a longitudinal displacement of the model ship and a second sensing unit for sensing a lift height displacement of the model ship. In the model ship test method using the device,
a) setting output criteria of the pump and the impeller for each speed;
b) installing a model ship on a ship testing apparatus;
c) initializing the first sensing unit and the second sensing unit;
d) operating the pump and the impeller; And
and e) processing the measured values of the first sensing unit and the second sensing unit through an external data processing apparatus.
The method according to claim 7,
Changing the output of the pump and the impeller further comprises the step of repeating the process of d) to e) model ship test method.
KR1020100010327A 2010-02-04 2010-02-04 Experimental apparatus and method of ships KR100973756B1 (en)

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CN102829949A (en) * 2012-08-21 2012-12-19 广东海洋大学 Small-sized closed horizontal circulating water channel device
KR101243786B1 (en) 2010-10-07 2013-03-14 한국해양과학기술원 Fluid static load measuring apparatus for marine structure
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WO2014109442A1 (en) * 2013-01-10 2014-07-17 부산대학교 산학협력단 Device for adjusting length of mooring rope for testing floating body and method for operating same
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KR101527784B1 (en) * 2013-10-18 2015-06-11 한국해양과학기술원 Linear Resistance measuring device of miniature recreational watercraft and resistance measuring method using Thereof
KR101557428B1 (en) 2014-12-30 2015-10-07 한국해양과학기술원 Seakeeping test apparatus for model ship
KR20160001690U (en) * 2014-11-11 2016-05-19 대우조선해양 주식회사 Multipurpose Towing Carridge with which Resistance and Propulsion Test and Maneuverability Test can be performed
US9714880B2 (en) 2014-11-18 2017-07-25 Korea Institute Of Ocean Science And Technology Inertia test apparatus for model ship
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CN109632257A (en) * 2019-01-29 2019-04-16 中国海洋大学 Submarine navigation device surface drag reduction simulating test device under deep-sea high-pressure environment
CN111122113A (en) * 2019-12-31 2020-05-08 南通理工学院 Experiment testing device for racing boat
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CN114088337A (en) * 2021-10-18 2022-02-25 西北工业大学 Flow field synchronous shooting test platform and method
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KR101243786B1 (en) 2010-10-07 2013-03-14 한국해양과학기술원 Fluid static load measuring apparatus for marine structure
CN102162766A (en) * 2010-12-15 2011-08-24 中国船舶重工集团公司第七一○研究所 Durability test device of contrary rotating propulsion system in long underwater voyage
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KR101527784B1 (en) * 2013-10-18 2015-06-11 한국해양과학기술원 Linear Resistance measuring device of miniature recreational watercraft and resistance measuring method using Thereof
CN103776612A (en) * 2014-01-13 2014-05-07 哈尔滨工程大学 Testing device and method for assessing drag reduction effect of bionic non-smooth surface
CN103776612B (en) * 2014-01-13 2016-06-29 哈尔滨工程大学 The assay device of assessment bionic non-smooth surface drag-reduction effect and method
KR101505606B1 (en) 2014-03-14 2015-03-24 삼성중공업 주식회사 Apparatus for rotating test of turret
CN104019960A (en) * 2014-05-26 2014-09-03 中国船舶重工集团公司第七○二研究所 Stand test bench for semi-submerged propeller driving device
CN104048810A (en) * 2014-07-09 2014-09-17 哈尔滨工程大学 Rigid cylinder vortex-induced vibration testing device capable of achieving nonlinear boundary conditions
CN104048810B (en) * 2014-07-09 2016-09-14 哈尔滨工程大学 A kind of rigid cylindrical vortex vibration testing device realizing nonlinear boundary condition
KR20160001690U (en) * 2014-11-11 2016-05-19 대우조선해양 주식회사 Multipurpose Towing Carridge with which Resistance and Propulsion Test and Maneuverability Test can be performed
US9714880B2 (en) 2014-11-18 2017-07-25 Korea Institute Of Ocean Science And Technology Inertia test apparatus for model ship
CN104517514B (en) * 2014-11-25 2017-02-22 哈尔滨工程大学 Experiment device for forcing rolling of ship model
CN104517514A (en) * 2014-11-25 2015-04-15 哈尔滨工程大学 Experiment device for forcing rolling of ship model
KR101557428B1 (en) 2014-12-30 2015-10-07 한국해양과학기술원 Seakeeping test apparatus for model ship
WO2018016679A1 (en) * 2016-07-18 2018-01-25 한국해양과학기술원 Model ship wind load measuring device
KR101900324B1 (en) * 2017-12-26 2018-09-19 한국해양과학기술원 Towing device for high-speed vessels
KR101900898B1 (en) * 2017-12-26 2018-09-21 한국해양과학기술원 Towing method for high-speed vessels
CN108426697A (en) * 2018-04-12 2018-08-21 江苏科技大学 A kind of cargo loads the experimental provision of shear stress suffered by uneven ship
CN108548651A (en) * 2018-04-12 2018-09-18 江苏科技大学 The experimental provision of shear stress suffered by the ship navigated by water in a kind of wave
CN109632257A (en) * 2019-01-29 2019-04-16 中国海洋大学 Submarine navigation device surface drag reduction simulating test device under deep-sea high-pressure environment
CN111122113A (en) * 2019-12-31 2020-05-08 南通理工学院 Experiment testing device for racing boat
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