CN117073975A - Multi-channel synchronous test array for complex unsteady wake turbulence field of ship and application thereof - Google Patents
Multi-channel synchronous test array for complex unsteady wake turbulence field of ship and application thereof Download PDFInfo
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- CN117073975A CN117073975A CN202310927398.2A CN202310927398A CN117073975A CN 117073975 A CN117073975 A CN 117073975A CN 202310927398 A CN202310927398 A CN 202310927398A CN 117073975 A CN117073975 A CN 117073975A
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- array
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- ship
- pressure pulsation
- wake
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 20
- 230000010349 pulsation Effects 0.000 claims abstract description 37
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000012805 post-processing Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 2
- 230000008447 perception Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 5
- 238000001228 spectrum Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
Abstract
The application provides a multi-channel synchronous test array for a complex unsteady wake turbulence field of a ship, which is characterized by comprising N pressure pulsation sensing units, N diversion seats and an array structural member, wherein the grid array is arranged below a free liquid level. The application also provides an application of the complex unsteady wake turbulence field multichannel synchronous test array of the ship. Aiming at the characteristics of the wake field, such as width, thickness and complex unsteady characteristics, the application provides a pressure pulsation sensing grid array, and the pressure pulsation and spectrum characteristics of the wake field are measured with high precision by pressure pulsation sensing and signal processing of a group of thin wing structural members arranged below the free liquid level behind the ship. The application has the advantages of exquisite structural design, high precision and easy processing, installation and disassembly, and fills the blank that the complex unsteady characteristic of the ship wake field lacks an effective test measurement means at present.
Description
Technical Field
The application relates to a device for measuring a ship wake field and application thereof, and belongs to the technical field of ship hydrodynamic force tests.
Background
When a ship sails in water, due to the interaction between a ship body and a water body, hydrodynamic wake with a length of several times of the ship length can be formed behind the ship, pressure pulsation of a wake field is intense, physical characteristics such as sound, light, heat and electricity are generated, and wake detection becomes an important mode for positioning and tracking the ship. At present, the analysis of the wake field is limited to adopting shooting and photographing observation for simple qualitative assessment, and no test means is adopted for the pressure pulsation and distribution for representing the strength of the wake field.
Disclosure of Invention
The application aims to solve the technical problems that: the ship wake field is an unsteady turbulence flow field, and an effective test measurement means for representing the pressure fluctuation of the strength of the ship wake field is lacking at present.
In order to solve the technical problems, the technical scheme of the application provides a multi-channel synchronous test array for a complex unsteady wake turbulence field of a ship, which is characterized by comprising N pressure pulsation sensing units, N diversion seats and an array structural member, wherein the grid array is arranged below a free liquid level, and the grid array comprises the following components:
the pressure pulsation sensing unit is used for capturing wake flow field pressure signal changes;
each guide seat is fixedly connected with a pressure pulsation sensing unit;
the array structural member is used for connecting the N diversion seats.
Preferably, the pressure pulsation sensing unit transmits the captured wake flow field pressure signal changes to a workstation, and the workstation performs post-processing and analysis.
Preferably, the pressure pulsation sensing unit is fixed on the flow guiding seat through a threaded hole in the flow guiding seat.
Preferably, the diversion seat and the wake field are integrated, and the appearance is smooth streamline.
Preferably, the small diameter end of the flow guiding seat is the signal detecting head placing position of the pressure pulsation sensing unit, and faces the incoming flow direction.
Preferably, the array structural member changes array distribution through different combination forms, and multi-point measurement is realized through the N pressure pulsation sensing units.
Preferably, the array structural member is designed as a symmetrical ultrathin airfoil in cross section.
Preferably, the deflector seat and the array structural member are lightweight structural members.
Preferably, the diversion seat and the array structural member are spliced and fastened through a plurality of set screws to form a smooth and seamless array structure.
The application also provides an application of the complex unsteady wake turbulence field multichannel synchronous test array of the ship, which is characterized in that the complex unsteady wake turbulence field multichannel synchronous test array of the ship is arranged below the free liquid level behind the ship and can be fixed or sailed with the ship to capture flow field information in the depth and width directions of the water in the plane so as to realize measurement of wake field pressure pulsation.
Aiming at the characteristics of the wake field, such as width, thickness and complex unsteady characteristics, the application provides a pressure pulsation sensing grid array, and the pressure pulsation and spectrum characteristics of the wake field are measured with high precision by pressure pulsation sensing and signal processing of a group of thin wing structural members arranged below the free liquid level behind the ship. The application has the advantages of exquisite structural design, high precision and easy processing, installation and disassembly, and fills the blank that the complex unsteady characteristic of the ship wake field lacks an effective test measurement means at present.
Drawings
FIG. 1 is a schematic diagram of a ship wake field pressure pulsation multi-channel synchronous test array;
fig. 2 is a schematic cross-sectional view of a baffle seat.
Detailed Description
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.
Aiming at the characteristics of width, thickness and unsteady characteristics of a wake field, the application forms a measuring array through a plurality of pressure sensing units, flow guide seats and structural members, and the measuring array is arranged behind a ship, and realizes high-precision measurement of the wake pressure pulsation and frequency spectrum characteristics through pressure pulsation sensing and signal processing.
Aiming at the problem that the pressure pulsation and the frequency spectrum characteristic of the unsteady wake turbulence field of the ship cannot be measured, the application discloses a multi-channel synchronous test array for the pressure pulsation of the ship wake field, and as shown in figure 1, the whole device of the test array is a fitting part and can be divided into three parts. The first part is a pressure pulsation sensing unit 1, which can capture the pressure signal change of a fine wake flow field, and transmit the pressure signal change to a workstation for post-processing and analysis. The second part is the guide seat 2 of the pressure pulsation sensing unit 1, in order to reduce the blocking effect on incoming flow, the guide seat 2 is smooth streamline with special design in appearance, a threaded hole is formed in the guide seat and used for connecting and fixing the pressure pulsation sensing unit 1, and the small diameter end of the guide seat is the signal probe placement position of the pressure pulsation sensing unit 1 and faces the incoming flow direction, as shown in fig. 2. The third part is an array structural member 3 for connecting each flow guiding seat 2, the array structural member 3 comprises a plurality of lengths, and the array distribution can be changed through different combination forms, so that multi-point measurement is realized. The cross-sectional shape of the array structural member 3 is designed as a symmetrical ultrathin airfoil shape aiming at the flow field characteristics so as to reduce the interference on the ship wake field flow field. The material of the flow guide seat 2 and the array structural member 3 is aluminum alloy, and the flow guide seat and the array structural member are light structural members which are spliced and fastened through a plurality of set screws to form a smooth and seamless array structure. The whole device is arranged below the free liquid level behind the ship, can be fixed or sailed with the ship, and realizes the measurement of the pressure pulsation of the wake field.
Aiming at the problem of ship wake fields, the application provides a ship wake field pressure pulsation measurement array, and designs a grid array capable of being flexibly combined, aiming at the characteristics of width, thickness and complex unsteady characteristics of the wake fields, the array is formed by connecting a plurality of thin wing structural members in parallel, and the array is arranged below the free liquid level behind a ship, so that high-precision measurement and analysis of the wake field multi-point pressure pulsation and the frequency spectrum characteristics can be realized.
Claims (10)
1. The utility model provides a complex unsteady wake turbulent flow field multichannel synchronous test battle array of boats and ships, its characterized in that is for arranging the grid array below the free liquid level, including N pressure pulsation perception unit, N water conservancy diversion seat and array structure spare, wherein:
the pressure pulsation sensing unit is used for capturing wake flow field pressure signal changes;
each guide seat is fixedly connected with a pressure pulsation sensing unit;
the array structural member is used for connecting the N diversion seats.
2. The complex unsteady wake turbulence field multichannel synchronous test array of the ship according to claim 1, wherein the pressure pulsation sensing unit transmits the captured wake flow field pressure signal changes to a workstation, and the workstation performs post-processing and analysis.
3. The multi-channel synchronous test array for the complex unsteady wake turbulence field of the ship according to claim 1, wherein the pressure pulsation sensing unit is fixed on the flow guide seat through a threaded hole in the flow guide seat.
4. The complex unsteady wake turbulence field multichannel synchronous test array of claim 1, wherein the flow guide seat and the wake field are integrated and have a smooth streamline shape.
5. The multi-channel synchronous test array for the complex unsteady wake turbulence field of the ship according to claim 4, wherein the small-diameter end of the flow guide seat is the placement position of the signal probe of the pressure pulsation sensing unit and faces the incoming flow direction.
6. The complex unsteady wake turbulence field multichannel synchronous test array of the ship according to claim 1, wherein the array structural member changes array distribution through different combination forms, and the multi-point measurement is realized through the N pressure pulsation sensing units.
7. A complex unsteady wake turbulence field multichannel synchronous test array for a ship as claimed in claim 1, wherein the array structural member is designed as a symmetrical ultrathin airfoil in section.
8. The multi-channel synchronous test array for a complex unsteady wake turbulence field of a ship according to claim 1, wherein the flow guide seat and the array structural member are light structural members.
9. The multi-channel synchronous test array for the complex unsteady wake turbulence field of the ship according to claim 1, wherein the flow guide seat and the array structural member are spliced and fastened through a plurality of set screws to form a smooth and seamless array structure.
10. The application of the complex unsteady wake turbulence field multichannel synchronous test array of the ship according to claim 1 is characterized in that the complex unsteady wake turbulence field multichannel synchronous test array of the ship according to claim 1 is arranged below the free liquid level behind the ship and can be fixed or sailed with the ship for capturing flow field information in the depth and width directions of the water in the plane so as to realize measurement of wake field pressure pulsation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310927398.2A CN117073975A (en) | 2023-07-26 | 2023-07-26 | Multi-channel synchronous test array for complex unsteady wake turbulence field of ship and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310927398.2A CN117073975A (en) | 2023-07-26 | 2023-07-26 | Multi-channel synchronous test array for complex unsteady wake turbulence field of ship and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117073975A true CN117073975A (en) | 2023-11-17 |
Family
ID=88706995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310927398.2A Pending CN117073975A (en) | 2023-07-26 | 2023-07-26 | Multi-channel synchronous test array for complex unsteady wake turbulence field of ship and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117073975A (en) |
-
2023
- 2023-07-26 CN CN202310927398.2A patent/CN117073975A/en active Pending
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