CN112504626A - Bubble tracer particle PIV experimental apparatus - Google Patents
Bubble tracer particle PIV experimental apparatus Download PDFInfo
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- CN112504626A CN112504626A CN202011292758.9A CN202011292758A CN112504626A CN 112504626 A CN112504626 A CN 112504626A CN 202011292758 A CN202011292758 A CN 202011292758A CN 112504626 A CN112504626 A CN 112504626A
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- piv
- bubble
- ship body
- tracer particles
- generating device
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- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention provides a PIV (particle image velocimetry) experimental device for bubble tracer particles, which is characterized by comprising a ship body opening bubble generating device and a PIV testing and analyzing device; the ship body opening bubble generating device provides bubble tracer particles for a PIV experimental object, and the PIV testing and analyzing device obtains the space-time distribution of ship body bubbles through the measurement of the bubble tracer particles. The hull opening bubble generating device comprises a hull model, an air hole pipeline and an air source system; the middle part of the ship body model is provided with a cylindrical moon pool, two sides of the bow are provided with side thrusts, the air hole pipelines are respectively arranged at the back sides of the bow and the two side thrusts and the front and back sides of the bottom surface of the moon pool, and the air source system is communicated with the air hole pipelines. Compared with the solid tracer particles adopted by the traditional PIV technology, the bubble tracer particles are cleaner and more environment-friendly, can be recycled, do not need to be recovered, and greatly improve the experimental efficiency.
Description
Technical Field
The invention relates to a trace particle PIV experimental device, in particular to a bubble trace particle PIV experimental device, and belongs to the technical field of ship and ocean engineering.
Background
The PIV test is also called a refined flow field test, and the suspended particles are illuminated by laser, and the motion trail of the underwater tracing particles is captured by a high-speed camera to reflect the change of the flow field. The traditional PIV tracer particles are granular and can suspend in water for a long time.
However, if the experimental time interval is short, the previously used conventional tracer particles will be suspended in the water without settling. Therefore, a new PIV tracer particle needs to be invented to meet the requirement of PIV repeated tests in a short time.
Disclosure of Invention
The invention aims to provide a bubble tracing particle PIV experimental device for reflecting the space-time distribution condition of bubbles generated at a bottom moon pool, a side thrust and the like in the advancing process of a boat.
The purpose of the invention is realized as follows:
a bubble tracing particle PIV experimental facility comprises a ship body opening bubble generating device and a PIV testing and analyzing device; the ship body opening bubble generating device provides bubble tracer particles for a PIV experimental object, and the PIV testing and analyzing device obtains the space-time distribution of ship body bubbles through the measurement of the bubble tracer particles
The invention also includes such features:
the hull opening bubble generating device comprises a hull model, an air hole pipeline and an air source system; the middle part of the hull model is provided with a cylindrical moon pool, two sides of the bow are provided with side thrusts, air hole pipelines are respectively arranged at the bow, the rear sides of the two side thrusts and the front and rear sides of the bottom surface of the moon pool, and the air source system is communicated with the air hole pipelines;
the PIV testing and analyzing device comprises a circulating water tank, a target plate, a normally-on laser sheet light source and a high-speed camera.
Compared with the prior art, the invention has the beneficial effects that:
compared with the solid tracer particles adopted by the traditional PIV technology, the bubble tracer particles are cleaner and more environment-friendly, can be recycled, do not need to be recovered, and greatly improve the experimental efficiency. Moreover, when the bubble tracing particle PIV experiment technology is applied to the experiment, the real situation of the moon pool type boat when bubbles are generated at the bottom moon pool, the side thrust and the like in the advancing process can be accurately simulated.
Drawings
FIG. 1 is a schematic layout of the experimental technique;
fig. 2 is a schematic view of a hull model and its air hole arrangement.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A PIV experiment technology for bubble tracing particles comprises a ship body opening bubble generating device and a PIV testing and analyzing device. The ship hull opening bubble generating device provides bubble tracer particles for the PIV experimental object; the PIV testing and analyzing device obtains the space-time distribution of the hull bubbles through the measurement of the bubble tracing particles.
Furthermore, the ship body opening bubble generating device comprises a ship body model, an air hole pipeline and an air source system. The middle part of the hull model is provided with a cylindrical moon pool, two sides of the bow are provided with side thrusters, and the air hole pipelines are respectively arranged at the back sides of the bow and the two side thrusters and the front and back sides of the bottom surface of the moon pool in a certain arrangement mode. The air source system conveys air with certain air pressure to air holes arranged on the ship body through the air supply steel pipe to generate bubble tracer particles, and the air pressure and the flow in the air passage can be controlled through a valve.
Furthermore, the PIV testing and analyzing device comprises a target plate, a normally-on laser sheet light source and a high-speed camera. The method comprises the steps of vertically placing a target plate for calibrating the position coordinates of tracer particles in a water tank, adjusting a high-speed camera to focus the plane of the target plate, fixing the camera, then opening and adjusting a light source of the camera to be overlapped with the plane of the target plate, then removing the target plate, and placing a ship model in a ship opening bubble generating device in the water tank in a direction perpendicular to the direction of the light source. Starting an air source system in the hull opening bubble generating device, illuminating the bubble tracing particles flowing through the plane of the target plate by a normally-on laser sheet light source, shooting the bubble tracing particles through a high-speed camera, and integrating shot bubble tracing particle pictures with the target plate to obtain the space-time distribution condition of bubbles.
As shown in fig. 1, firstly, a target plate painted with black and white square grids is placed in a circulating water tank 2 perpendicular to the water surface, and the shooting angle of a high-speed camera 5 is adjusted to be aligned to the target plate; turning on a normally bright laser sheet light source 3, adjusting the spatial position and the focusing position of the laser sheet light source to enable the sheet light source to be superposed with the plane of the target plate, and then removing the target plate in the water tank; placing a hull model 4 in a hull opening bubble generating device in a water tank, and adjusting the position of the hull model to enable the cross section of the hull to be parallel to the plane of a target plate; the air source system 1 supplies air to three air holes 7, 8 and 10 on the surface of the ship body model, namely an air hole at the moon pool 6, an air hole at the side push 9 and an air hole at the bow. The air holes are arranged alternately with different diameters, so that the air holes are different in size, the quantity and size of the air bubbles generated by each group of air holes can be controlled by adjusting the air pressure and the size of the opening of the valve, and the actual air bubble generation condition can be simulated; after the circulating water tank is started, bubbles flow along with water flow, bubble tracer particles flowing through the plane of the target plate are illuminated by a normally bright laser sheet light source, and the distribution condition of the bubble tracer particles at the moment can be shot by a high-speed camera.
In addition to the above embodiments, the present invention may have other embodiments, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (3)
1. A bubble tracer particle PIV experimental facility is characterized by comprising a ship body opening bubble generating device and a PIV testing and analyzing device; the ship body opening bubble generating device provides bubble tracer particles for a PIV experimental object, and the PIV testing and analyzing device obtains the space-time distribution of ship body bubbles through the measurement of the bubble tracer particles.
2. The particle PIV experimental facility as claimed in claim 1, wherein the hull open bubble generating device comprises a hull model, a gas hole pipeline and a gas source system; the middle part of the ship body model is provided with a cylindrical moon pool, two sides of the bow are provided with side thrusts, the air hole pipelines are respectively arranged at the back sides of the bow and the two side thrusts and the front and back sides of the bottom surface of the moon pool, and the air source system is communicated with the air hole pipelines.
3. The device for testing and analyzing the PIV of the bubble tracer particles as claimed in claim 1, wherein the device for testing and analyzing the PIV comprises a circulating water tank, a target plate, a normally-on laser sheet light source and a high-speed camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011292758.9A CN112504626A (en) | 2020-11-18 | 2020-11-18 | Bubble tracer particle PIV experimental apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011292758.9A CN112504626A (en) | 2020-11-18 | 2020-11-18 | Bubble tracer particle PIV experimental apparatus |
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| CN112504626A true CN112504626A (en) | 2021-03-16 |
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| CN202011292758.9A Pending CN112504626A (en) | 2020-11-18 | 2020-11-18 | Bubble tracer particle PIV experimental apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577437A (en) * | 2022-02-15 | 2022-06-03 | 哈尔滨工程大学 | Gas-liquid two-phase flow bubble measuring device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011220891A (en) * | 2010-04-12 | 2011-11-04 | Ihi Corp | Particle-spraying device and flow field observation system using the same |
| JP2013156140A (en) * | 2012-01-30 | 2013-08-15 | Ihi Corp | Flow field observation method and flow field observation apparatus |
| CN107631857A (en) * | 2017-07-21 | 2018-01-26 | 哈尔滨工程大学 | The measuring system in fine flow field between a kind of trimaran main leaf body |
| CN108020168A (en) * | 2017-11-23 | 2018-05-11 | 哈尔滨工程大学 | Nearly free surface gas-liquid two-phase flow field three-dimension measuring system and measuring method based on particle image velocimetry |
| CN109738153A (en) * | 2019-01-08 | 2019-05-10 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of supercavity internal flow test device |
| CN110803266A (en) * | 2019-11-14 | 2020-02-18 | 哈尔滨工程大学 | Method and device for measuring bow bubble sweep phenomenon |
-
2020
- 2020-11-18 CN CN202011292758.9A patent/CN112504626A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011220891A (en) * | 2010-04-12 | 2011-11-04 | Ihi Corp | Particle-spraying device and flow field observation system using the same |
| JP2013156140A (en) * | 2012-01-30 | 2013-08-15 | Ihi Corp | Flow field observation method and flow field observation apparatus |
| CN107631857A (en) * | 2017-07-21 | 2018-01-26 | 哈尔滨工程大学 | The measuring system in fine flow field between a kind of trimaran main leaf body |
| CN108020168A (en) * | 2017-11-23 | 2018-05-11 | 哈尔滨工程大学 | Nearly free surface gas-liquid two-phase flow field three-dimension measuring system and measuring method based on particle image velocimetry |
| CN109738153A (en) * | 2019-01-08 | 2019-05-10 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of supercavity internal flow test device |
| CN110803266A (en) * | 2019-11-14 | 2020-02-18 | 哈尔滨工程大学 | Method and device for measuring bow bubble sweep phenomenon |
Non-Patent Citations (2)
| Title |
|---|
| 史泽宇: "月池诱生气泡在船底分布特征试验研究", 《中国博士学位论文全文数据库》 * |
| 张福民: "基于PIV的船首气泡下扫现象试验研究", 《舰船科学技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577437A (en) * | 2022-02-15 | 2022-06-03 | 哈尔滨工程大学 | Gas-liquid two-phase flow bubble measuring device |
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Application publication date: 20210316 |