CN105758619B - Model test method for simulating observation of bow bubble diarrhea track of scientific investigation ship - Google Patents
Model test method for simulating observation of bow bubble diarrhea track of scientific investigation ship Download PDFInfo
- Publication number
- CN105758619B CN105758619B CN201610192970.5A CN201610192970A CN105758619B CN 105758619 B CN105758619 B CN 105758619B CN 201610192970 A CN201610192970 A CN 201610192970A CN 105758619 B CN105758619 B CN 105758619B
- Authority
- CN
- China
- Prior art keywords
- ship
- model
- dyeing liquid
- diarrhea
- test method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a model test method for simulating and observing the bow bubble diarrhea track of a scientific research ship, which comprises the following steps: s1, marking on the ship model to show the multi-beam transmitting and receiving area and the height mark of the dyeing liquid spray pipe, and arranging an underwater camera at a certain depth below the bottom of the ship model; s2, installing a dyeing liquid spray pipe, and adjusting a nozzle of the dyeing liquid spray pipe to a certain height mark; s3, placing the ship model into a towing tank, adjusting the water discharge amount to a preset draught state, and connecting the ship model with a driving device; s4, connecting the dyeing liquid spray pipe with the dyeing liquid container and the flow control valve, and simultaneously starting the underwater camera; and S5, opening the trailer to tow the ship model, then opening the flow control valve, and releasing the dyeing liquid into the water while observing in real time through the monitor. The method is used for judging whether the bow of the scientific investigation ship with the underwater detection function generates bubbles in the driving process of the scientific investigation ship and influences the normal work of the multi-beam detection equipment or not at the initial design stage of the scientific investigation ship.
Description
Technical Field
The invention relates to the technical field of ship model experiments, in particular to a model test method for simulating and observing a bow bubble diarrhea track of a scientific investigation ship.
Background
Nowadays, for scientific research ships with underwater detection function, a multi-beam detection device is generally required to be installed at the bottom of a ship body. When the scientific investigation ship sails in a real marine environment, the bow continuously goes out of water and enters water due to pitching motion, and bubbles are easily generated at the bow. If the bubbles at the bow of the ship are entrained by water flow and flow through the ship bottom multi-beam detection area in the process of descending towards the back of the ship, the normal work of the detection equipment is directly interfered.
Therefore, it is necessary to effectively analyze and judge the bubble interference problem at the early stage of the design of the scientific investigation ship in order to modify the bow line type or adjust the arrangement of the multi-beam detection apparatus in time.
Disclosure of Invention
In view of the above, the model test method for simulating and observing the bow bubble diarrhea trajectory of the scientific research ship provided by the invention is used for judging at the initial design stage of the scientific research ship: when the bow of the scientific investigation ship with the underwater detection function generates bubbles in the driving process, whether the normal work of the multi-beam detection equipment is influenced or not is judged.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a model test method for simulating and observing a bow bubble diarrhea track of a scientific investigation ship comprises the following steps:
s1, marking on the ship model to show the multi-beam transmitting and receiving area and the height mark for installing the dyeing liquid spray pipe, and arranging an underwater camera at a certain depth below the multi-beam transmitting and receiving area at the bottom of the ship model and pre-adjusting the focal length;
s2, installing the dyeing liquid spray pipe, and adjusting the spout of the dyeing liquid spray pipe to a certain height mark;
s3, placing the ship model into a towing tank, adjusting the water discharge amount to a preset draught state, and connecting the ship model with a driving device;
s4, connecting the dyeing liquid spray pipe with the dyeing liquid container and the flow control valve, and simultaneously starting the underwater camera;
and S5, starting the trailer towing ship model to move forwards at a preset speed, then starting the flow control valve, slowly and discontinuously releasing the dyeing liquid into the water, and simultaneously carrying out real-time observation through an external monitor of the underwater camera.
The model test method for simulating observation of the bow bubble diarrhea trajectory of the scientific investigation ship is described above, wherein the S1 includes the steps of:
s11, drawing a target in a multi-beam transmitting and receiving area corresponding to the bottom of the ship model by using lines with obvious color contrast with the appearance of the ship model;
and S12, drawing each height mark needing to be tested on the ship model fore-post.
In the above model test method for simulating and observing the bow bubble diarrhea trajectory of the scientific investigation ship, in step S5, when the speed of the trailer reaches a predetermined value, the trailer keeps moving forward at a constant speed, and then the flow control valve is opened.
The model test method for simulating and observing the bow bubble diarrhea locus of the scientific investigation ship is characterized in that the staining solution container is filled with the staining solution, and the mass density of the staining solution is close to that of fresh water.
The model test method for simulating observation of the bow bubble diarrhea track of the scientific investigation ship is characterized in that the underwater camera is positioned at a certain depth right below the target.
The above model test method for simulating and observing the bow bubble diarrhea trajectory of the scientific investigation ship comprises connecting the staining solution container to one end of the staining solution nozzle, wherein the other end of the staining solution nozzle faces the bottom of the ship model and is located at a predetermined height, and the flow control valve is arranged on the staining solution nozzle and used for controlling the flow of the staining solution.
Due to the adoption of the technology, the invention has the following positive effects:
(1) the method utilizes the specially-made dyeing liquid to simulate the fluid containing bubbles, simulates the downward movement track of bow bubbles by the movement track of the dyeing liquid, and is used for judging whether the bow bubbles generated by the scientific investigation ship with the underwater detection function influence the normal work of the multi-beam detection equipment or not in the driving process of the scientific investigation ship at the initial design stage of the scientific investigation ship.
(2) And the target is used for simulating and identifying the transmitting and receiving areas of the ship bottom multi-beam detection equipment which are easily interfered by bubbles.
(3) And recording and observing whether the motion trail of the dyeing liquid passes through the right lower part of the target in real time through an underwater camera and an external monitor thereof.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of experimental equipment in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention;
FIG. 2 is a side view of a ship model in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention;
FIG. 3 is a front view of a ship model in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention;
FIG. 4 is a top view of a ship model in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention;
FIG. 5 is a schematic view of a connection structure of a monitor and an underwater camera in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention;
FIG. 6 is a schematic position diagram of a target drawn on the surface of a ship model in a model test method for simulating and observing a bow bubble diarrhea track of a scientific investigation ship according to the invention;
FIG. 7 is a schematic structural diagram of a ship model bow column in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific investigation ship according to the present invention;
fig. 8 is a schematic diagram of a dyeing liquid flowing below a target observed in a monitor in a model test method for simulating observation of a bow bubble diarrhea trajectory of a scientific research ship according to the present invention.
In the drawings: 1. a ship model; 11. the bottom of the ship model; 12. a ship model fore-post; 2. a multi-beam detection device; 21. a target; 3. height marking; 4. an underwater camera; 5. a monitor; 6. a dyeing liquid spray pipe; 7. and (4) dyeing liquor.
Detailed Description
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
FIG. 1 is a schematic structural diagram of experimental equipment in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention; FIG. 2 is a side view of a ship model in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention; FIG. 3 is a front view of a ship model in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention; fig. 4 is a top view of a ship model in the model test method for simulatively observing the bow bubble diarrhea locus of a scientific investigation ship of the present invention, and fig. 5 is a schematic view of a connection structure of a monitor and an underwater camera in the model test method for simulatively observing the bow bubble diarrhea locus of a scientific investigation ship of the present invention; FIG. 6 is a schematic position diagram of a target drawn on the surface of a ship model in a model test method for simulating and observing a bow bubble diarrhea track of a scientific investigation ship according to the invention; please refer to fig. 1-6. The model test method for simulating and observing the bow bubble diarrhea track of the scientific investigation ship in the preferred embodiment is suitable for the model test of the scientific investigation ship with the multi-beam detection device 2 at the bottom, and comprises the following steps:
s1, marking on the ship model 1 to show the multiple beam emitting and receiving area and the height mark 3 installed on the dyeing liquid spray pipe 6, and arranging the underwater camera 4 at a certain depth below the multiple beam emitting and receiving area on the bottom 11 of the ship model and pre-focusing (as shown in fig. 5);
wherein, S1 specifically includes the steps of:
s11, drawing a target 21 (shown in figure 6) in the multi-beam transmitting and receiving area corresponding to the ship model bottom 11 by using lines with obvious contrast with the appearance color of the ship model;
s12, drawing each of the height markings 3 to be tested on the ship model stem 12.
S2, installing the dyeing liquid spray pipe 6, and adjusting the spout of the dyeing liquid spray pipe 6 to a certain height mark 3;
s3, placing the ship model 1 into a towing tank, adjusting the water discharge amount to a preset draught state, and connecting the ship model 1 with a driving device;
s4, connecting the dyeing liquid spray pipe 6 with the dyeing liquid container and the flow control valve, and simultaneously starting the underwater camera 4;
and S5, starting the trailer towing ship model 1 to move forwards at a preset speed, then opening the flow control valve, slowly and discontinuously releasing the dyeing liquid 7 into the water, and simultaneously observing in real time through the external monitor 5 of the underwater camera 4.
In step S5, when the vehicle speed of the trailer reaches a predetermined value, the trailer keeps moving forward at a constant speed, and then the flow control valve is opened.
Fig. 7 is a schematic structural diagram of a ship model stem in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific investigation ship according to the present invention, and is shown in fig. 1 to 7. Wherein, the staining solution container is provided with the staining solution 7, the mass density of the staining solution 7 is close to fresh water, and the staining solution does not diffuse when flowing through the area where the target 21 is located in the process of the diarrhea movement.
Further, in a preferred embodiment, the ship model 1 is similar to the structure of an actual ship, so as to simulate the actual ship.
The multi-beam detection device 2 is arranged at the bottom 11 of the ship model and used for simulating the multi-beam detection device 2 on an actual ship.
The dyeing liquid container is connected with one end of the dyeing liquid spray pipe 6, the other end of the dyeing liquid spray pipe 6 is positioned at a certain height mark 3 on a fore column 12 of the ship model 1, and the flow control valve is arranged on the dyeing liquid spray pipe 6 and used for controlling the flow of the dyeing liquid 7.
The underwater camera 4 is located at a certain depth under the target 21, and monitors the area of the target 21 drawn on the surface of the ship model bottom 11. The underwater camera 4 records and observes whether the movement locus of the staining solution 7 passes right below the target 21 in real time together with an externally connected monitor 5. The monitor 5 is located above the water surface.
The scientific investigation ship comprises various civil or military investigation ships, detection ships, monitoring ships and the like which are provided with the multi-beam detection equipment 2. The specific size, shape and material of the target 21 are limited by a detection area which can clearly identify the attention of the test, and the specific model and function of the underwater camera 4 are limited by a movement track which can clearly observe and record the dyeing liquid 7.
The invention utilizes the experimental equipment to judge that: when the ship sails at a certain draught and a certain sailing speed, bubbles are generated near the draught of the bow of the ship, and whether the two positions of the front point outside the multi-beam transmitting array and the rear point outside the receiving array are interfered by the bubbles or not is judged.
Fig. 8 is a schematic diagram of a dyeing liquid flowing below a target observed in a monitor in a model test method for simulating and observing a bow bubble diarrhea trajectory of a scientific research ship according to the present invention, and is shown in fig. 1 to 8. If the dyeing liquid 7 flows through the target 21 area (as shown in fig. 8), the ship is predicted to actually sail under the working conditions corresponding to the test draught and the test sailing speed, when the bow generates bubbles near the corresponding test height, the ship bottom multi-beam detection device 2 is interfered by the bubbles, and a ship designer is correspondingly reminded to carry out necessary adjustment on the bow line type or the arrangement of the multi-beam detection device 2 according to the test result; otherwise, the arrangement of the bow line type and the multi-beam detection device 2 is reasonable.
The method utilizes the specially-made dyeing liquid 7 to simulate the fluid containing bubbles, and the movement track of the dyeing liquid 7 simulates the downward movement track of bow bubbles, so as to judge whether the bow bubbles generated by the scientific investigation ship with the underwater detection function influence the normal work of the multi-beam detection equipment 2 during the driving process of the scientific investigation ship at the initial design stage of the scientific investigation ship. And the target 21 is used for simulating and identifying the detection area of the ship bottom multi-beam detection device 2 which is easily interfered by bubbles. Whether the motion track of the dyeing liquid 7 passes right below the target 21 is recorded and observed in real time through the underwater camera 4 and an external monitor 5 thereof.
In summary, the above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and it should be understood that those skilled in the art should be able to recognize that the invention includes all equivalent and obvious modifications made by the present description and the illustrated contents.
Claims (6)
1. A model test method for simulating and observing the bow bubble diarrhea track of a scientific investigation ship is characterized by comprising the following steps:
s1, marking on the ship model to show the multi-beam transmitting and receiving area and the height mark for installing the dyeing liquid spray pipe, and arranging an underwater camera at a certain depth below the multi-beam transmitting and receiving area at the bottom of the ship model and pre-adjusting the focal length;
s2, installing the dyeing liquid spray pipe, and adjusting the spout of the dyeing liquid spray pipe to a certain height mark;
s3, placing the ship model into a towing tank, adjusting the water discharge amount to a preset draught state, and connecting the ship model with a driving device;
s4, connecting a dyeing liquid spray pipe with a dyeing liquid container and a flow control valve, wherein the dyeing liquid container is provided with the dyeing liquid, and simultaneously starting an underwater camera;
and S5, starting the trailer towing ship model to move forwards at a preset speed, then starting the flow control valve to slowly and discontinuously release the staining solution into the water, and simultaneously observing the motion track of the staining solution in real time through an external monitor of the underwater camera, wherein the monitor is positioned above the water surface.
2. The model test method for simulating observation of the bow bubble diarrhea trajectory of a scientific research ship as claimed in claim 1, wherein said S1 comprises the steps of:
s11, drawing a target in the multi-beam transmitting and receiving area corresponding to the bottom of the ship model by using lines with obvious color contrast with the appearance of the ship model;
and S12, drawing each height mark needing to be tested on the ship model fore-post.
3. The model test method for simulating the observation of the bow bubble diarrhea trajectory of a scientific research ship as claimed in claim 1, wherein in step S5, the speed of the trailer is kept constant after reaching a predetermined value, and then the flow control valve is opened.
4. The model test method for simulating and observing the bow bubble diarrhea locus of a scientific research ship according to claim 2, wherein the mass density of the staining solution is close to that of fresh water.
5. The model test method for simulating observation of bow bubble diarrhea locus of a scientific research ship according to claim 4, wherein the underwater camera is located at a certain depth right below the target.
6. The model test method for simulating and observing the bow bubble diarrhea locus of a scientific research ship according to claim 4, wherein the staining solution container is connected to one end of the staining solution nozzle, the other end of the staining solution nozzle is located at a certain height mark, and the flow control valve is disposed on the staining solution nozzle for controlling the flow of the staining solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610192970.5A CN105758619B (en) | 2016-03-30 | 2016-03-30 | Model test method for simulating observation of bow bubble diarrhea track of scientific investigation ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610192970.5A CN105758619B (en) | 2016-03-30 | 2016-03-30 | Model test method for simulating observation of bow bubble diarrhea track of scientific investigation ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105758619A CN105758619A (en) | 2016-07-13 |
| CN105758619B true CN105758619B (en) | 2020-08-04 |
Family
ID=56345924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610192970.5A Active CN105758619B (en) | 2016-03-30 | 2016-03-30 | Model test method for simulating observation of bow bubble diarrhea track of scientific investigation ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105758619B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225997B (en) * | 2016-08-28 | 2018-09-25 | 成都润博科技有限公司 | A method of it is tested using intelligent being sealed property of bubble detection device |
| CN110937085A (en) * | 2019-12-11 | 2020-03-31 | 上海彩虹鱼海洋科技股份有限公司 | Identification system for recovering offshore equipment and method for identifying offshore equipment using same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203902779U (en) * | 2014-04-03 | 2014-10-29 | 中国船舶工业集团公司第七〇八研究所 | Anti-bubble bulbous bow and scientific research ship |
| CN203996756U (en) * | 2014-08-13 | 2014-12-10 | 中国船舶工业集团公司第七〇八研究所 | A kind of multi-beam streamlined reefer housing that is applied to scientific investigation ship |
| CN204514567U (en) * | 2015-04-09 | 2015-07-29 | 中国人民解放军91439部队 | A kind of Ship Bubbles Wake field laboratory simulation device |
| CN105021231B (en) * | 2015-07-31 | 2017-05-31 | 中国矿业大学 | A kind of flotation Moving Bubble feature observation experiment device and method |
-
2016
- 2016-03-30 CN CN201610192970.5A patent/CN105758619B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105758619A (en) | 2016-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105758619B (en) | Model test method for simulating observation of bow bubble diarrhea track of scientific investigation ship | |
| CN105571818A (en) | Variable-water-depth towing tank air-layer resistance reduction test device and method | |
| US6053121A (en) | Method and apparatus for exchanging ballast water in a ship | |
| US20150009254A1 (en) | Printing apparatus | |
| KR101767216B1 (en) | Slamming load measuring device for model tests | |
| CN102841216A (en) | Portable speed measuring device for ship | |
| CN105716796A (en) | Packaging bag air leakage detection device | |
| CN107953968A (en) | A kind of vertical stream jet drag reduction method of ship | |
| JP5599482B1 (en) | Ship equipped with bubble resistance reduction device and ship resistance reduction method | |
| CN104059431A (en) | Ink for ink jet recording, recording apparatus, and recorded medium | |
| KR101531491B1 (en) | Wake measuring apparatus | |
| CN100557397C (en) | Test device for wind tunnel color smoke flow | |
| JP6366172B2 (en) | Flow field measurement method using microbubbles and flow field measurement device for aquarium | |
| CN202765235U (en) | Submerged buoy for marine observation | |
| DE102005006430B4 (en) | Unmanned underwater vehicle | |
| CN105197208A (en) | Towed underwater vehicle | |
| CN206395359U (en) | A kind of reverse image production line | |
| KR101556251B1 (en) | Wake measuring apparatus | |
| CN211329501U (en) | Feeding device of rice polishing machine | |
| JP5806251B2 (en) | Ship equipped with bubble resistance reduction device and ship resistance reduction method | |
| US20170113468A1 (en) | Printing apparatus | |
| CN203084790U (en) | Marine data unit release device | |
| JP3874662B2 (en) | Remote visual inspection device | |
| CN207708266U (en) | A kind of automatic liquid-stopping alarm infusion apparatus | |
| CN117554025A (en) | Bubble wake flow simulation device of underwater vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |