CN111674533A - Underwater glider flow control device based on electromagnetic flow control - Google Patents
Underwater glider flow control device based on electromagnetic flow control Download PDFInfo
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- CN111674533A CN111674533A CN202010580815.7A CN202010580815A CN111674533A CN 111674533 A CN111674533 A CN 111674533A CN 202010580815 A CN202010580815 A CN 202010580815A CN 111674533 A CN111674533 A CN 111674533A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/14—Control of attitude or depth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/001—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/001—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations
- B63G2008/002—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations unmanned
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Abstract
The invention discloses an underwater glider flow control device based on electromagnetic flow control, which relates to the technical field of active flow control and comprises an electromagnetic flow control device arranged at wings of an underwater glider, wherein the electromagnetic flow control device comprises a flow field parameter acquisition unit, a control unit and an electromagnetic flow control actuator unit which are sequentially and electrically connected; the electromagnetic flow control actuator unit comprises an electromagnetic activation plate arranged on the upper surface of the wing of the underwater glider. The invention forms an active flow control system by arranging the electromagnetic flow control devices at different positions of the underwater glider, thereby realizing the flow control targets at different positions of the underwater glider.
Description
Technical Field
The invention relates to the technical field of active flow control, in particular to an underwater glider flow control device based on electromagnetic flow control.
Background
An Underwater Glider (UG) is a new type of Underwater vehicle that uses net buoyancy and attitude angle adjustments to obtain propulsion. Compared with the traditional underwater vehicle, the underwater glider has the advantages of long range, strong continuous working capability, good economical efficiency and the like. The underwater glider serving as an underwater unmanned intelligent mobile platform has wide application prospect and great potential value in the fields of exploration of marine resources, marine scientific investigation, military and the like. The underwater glider can be divided into a traditional rotary type and a wing body fusion type according to the appearance. Because the shape of the revolution body shell can not provide very high lift force like hydrofoils, the maximum lift-drag ratio of the traditional revolution body type glider under the condition of additionally arranging the hydrofoils with high aspect ratio can only reach about 5. The wing body integrated underwater glider can obviously improve the lift-drag ratio due to larger water wing area.
The glide ratio of an underwater glider is one of the key factors determining the range and the economy of the underwater glider, and the glide ratio is mainly determined by the lift-drag ratio of the underwater glider. Thus, lift-drag ratio is critical to glider range and economy. At present, the lift-drag ratio of the underwater glider with the fused wing body can reach 15-20 through shape optimization design, however, no matter how the shape is optimized, the resistance coefficient is increased and the lift coefficient is reduced due to the flow separation phenomenon in the sailing process, and further improvement of the lift-drag ratio is limited. Furthermore, relying solely on profile optimization to raise the lift-to-drag ratio of an underwater glider can narrow the interior space of the glider, impairing its detection capability or operating time.
Disclosure of Invention
The invention aims to provide an underwater glider flow control device based on electromagnetic flow control, which aims to solve the problems in the prior art, and an active flow control system is formed by arranging electromagnetic flow control devices at different positions of an underwater glider so as to realize the flow control targets at different positions of the underwater glider.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an underwater glider flow control device based on electromagnetic flow control, which comprises an electromagnetic flow control device arranged at wings of an underwater glider, wherein the electromagnetic flow control device comprises a flow field parameter acquisition unit, a control unit and an electromagnetic flow control actuator unit which are sequentially and electrically connected; the electromagnetic flow control actuator unit comprises an electromagnetic activation plate arranged on the upper surface of the wing of the underwater glider.
Optionally, the flow field parameter obtaining unit is arranged at a position where the underwater glider is adjacent to the electromagnetic flow control actuator unit; the flow field parameter acquisition unit comprises a sensor and is used for acquiring the flow field parameters corresponding to the position of the electromagnetic flow control actuator unit on the underwater glider and uploading the flow field parameters to the control unit.
Optionally, the control unit includes a signal receiving unit, a signal processing unit, and a policy library unit; the signal receiving unit is used for receiving and storing the flow field parameters uploaded by each flow field parameter acquisition unit; the signal processing unit calls the flow field parameters stored by the signal receiving unit and processes the flow field parameters, wherein the processing comprises transcoding, calculation and the like; the strategy base unit outputs a control strategy of the electromagnetic flow control actuator unit according to each control data.
Optionally, the electromagnetic activation plate includes a plurality of electric magnetic strips arranged in parallel, and magnetic poles of the electric magnetic strips are arranged alternately in positive and negative directions.
Compared with the prior art, the invention has the following technical effects:
the invention forms an active flow control system by arranging the electromagnetic flow control devices at different positions of the underwater glider, thereby realizing the flow control targets at different positions on the underwater glider; and then, multi-target control is implemented through a control system, so that the electromagnetic flow control devices at all parts on the aircraft work coordinately and exert the maximum efficiency, the flow control of the underwater glider fused with the wing body is finally realized, and the practical engineering problem is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of the mounting position of an electromagnetic activation plate according to the present invention;
FIG. 2 is a schematic view of the electromagnetic flow control device connection of the present invention;
FIG. 3 is a schematic diagram of an electromagnetic activation plate structure according to the present invention;
wherein, 1 is an underwater glider wing, 2 is an electromagnetic activation plate, 3 is a flow field parameter acquisition unit, and 4 is a control unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an underwater glider flow control device based on electromagnetic flow control, which aims to solve the problems in the prior art, and an active flow control system is formed by arranging electromagnetic flow control devices at different positions of an underwater glider so as to realize the flow control targets at different positions of the underwater glider.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Electromagnetic flow control changing the structure of the fluid boundary layer by electromagnetic force is one of the active flow control methods. The electromagnetic flow control adopts electromagnetic force to control the flow of fluid with certain conductivity, in particular to the flow field structure of weak conductive fluid (such as seawater, weak electrolyte solution and the like), and improves the flow field structure and the dynamic characteristics by reconstructing and adjusting the fluid boundary layer structure. And because the electromagnetic force has the structural transmission characteristic of volume force, momentum, energy and accident quantity can be conveniently transmitted to the flow field under the conditions of not changing the boundary condition of the original flow field and not needing to transmit quality to the flow field, thereby effectively changing and constructing the structures of the fluid boundary layer and the flow field. The electromagnetic flow control device can effectively change and construct the structures of a fluid boundary layer and a flow field, so that the electromagnetic flow control device is widely applied to the field of fluid control.
Based on the above, the invention provides an underwater glider flow control device based on electromagnetic flow control, as shown in fig. 1-3, comprising an electromagnetic flow control device installed at an underwater glider wing 1, wherein the electromagnetic flow control device comprises a flow field parameter acquisition unit 3, a control unit 4 and an electromagnetic flow control actuator unit which are sequentially and electrically connected; the electromagnetic flow control actuator unit comprises an electromagnetic activation plate 2 mounted on the upper surface of the wing of the underwater glider. The flow field parameter acquisition unit 3 is arranged at the position where the underwater glider is adjacent to the electromagnetic flow control actuator unit; the flow field parameter acquiring unit 3 includes various sensors, such as a speed sensor, a pressure sensor, and the like, and is configured to acquire a flow field parameter corresponding to a position of the electromagnetic flow control actuator unit on the underwater glider and upload the flow field parameter to the control unit 4. The control unit 4 comprises a signal receiving unit, a signal processing unit and a strategy library unit; the signal receiving unit is used for receiving and storing the flow field parameters uploaded by each flow field parameter acquisition unit; the signal processing unit calls the flow field parameters stored by the signal receiving unit and processes the flow field parameters, wherein the processing comprises transcoding, calculation and the like; the strategy base unit outputs a control strategy of the electromagnetic flow control actuator unit according to each control data. The electromagnetic activation plate comprises a plurality of electric magnetic strips arranged in parallel, and magnetic poles of the electric magnetic strips are alternately arranged in a positive and negative mode; the electromagnetic activation plate is used for inhibiting boundary layer separation and eliminating vortex street, and the purposes of reducing drag, reducing vibration, improving wing body and combining the lift drag characteristic of the underwater glider are achieved. The electromagnetic flow control actuator unit obtains a database by means of a large number of numerical calculation and experimental exploration, and specifically achieves electromagnetic flow control parameters such as electric field intensity, electric field direction, magnetic field intensity and magnetic field direction of the electromagnetic flow control actuator at each position on an aircraft according to matching corresponding control strategies such as characteristic data of an underwater glider and working conditions of the underwater glider. The electromagnetic activation plate is the main functional component of the electromagnetic flow control actuator. And coating the electromagnetic activation plate on the surface of the wing body fused with the underwater glider. As shown in the schematic diagram of the electromagnetic activation plate in fig. 3, electromagnetic volume force can be formed in the fluid boundary layer near the surface of the glider by applying an electromagnetic field through the electromagnetic activation plate. When the direction of the formed electromagnetic force is parallel to the moving direction of the fluid, the fluid can be accelerated, so that the separation of a boundary layer is inhibited, the vortex street is eliminated, and the purposes of reducing drag, reducing vibration, and improving the lift drag characteristic of the wing body integrated with the underwater glider are achieved.
According to the method, the flow separation and hydrodynamic characteristic change rule and change mechanism obtained by researching the basic hydrodynamic characteristics of the underwater glider are combined with the flow field reduced model ROM of the underwater glider obtained by utilizing the POD method and the surface pressure distribution of the underwater glider according to a control strategy, and the closed-loop active flow control design of the underwater glider is carried out by taking the set flow separation and lift-drag ratio improvement degree as a design judgment condition. The active flow control design of the underwater glider is carried out by adopting the electromagnetic flow control, and the parameters such as the position, the arrangement quantity, the action strength and the direction of an electric field and a magnetic field of the electromagnetic activation plates are determined. The active flow control system is formed by arranging electromagnetic flow control devices at different positions of the underwater glider, so that the flow control targets at different positions of the underwater glider are realized; and then, multi-target control is implemented through a control system, so that the electromagnetic flow control devices at all parts on the aircraft work coordinately and exert the maximum efficiency, the flow control of the underwater glider fused with the wing body is finally realized, and the practical engineering problem is solved.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (4)
1. The utility model provides an underwater glider flow control device based on electromagnetic flow control which characterized in that: the device comprises an electromagnetic flow control device arranged at the wing of the underwater glider, wherein the electromagnetic flow control device comprises a flow field parameter acquisition unit, a control unit and an electromagnetic flow control actuator unit which are sequentially and electrically connected; the electromagnetic flow control actuator unit comprises an electromagnetic activation plate arranged on the upper surface of the wing of the underwater glider.
2. The electromagnetic flow control based underwater glider flow control apparatus according to claim 1, wherein: the flow field parameter acquisition unit is arranged at the position where the underwater glider is adjacent to the electromagnetic flow control actuator unit; the flow field parameter acquisition unit comprises a sensor and is used for acquiring the flow field parameters corresponding to the position of the electromagnetic flow control actuator unit on the underwater glider and uploading the flow field parameters to the control unit.
3. The electromagnetic flow control based underwater glider flow control apparatus according to claim 2, wherein: the control unit comprises a signal receiving unit, a signal processing unit and a strategy library unit; the signal receiving unit is used for receiving and storing the flow field parameters uploaded by each flow field parameter acquisition unit; the signal processing unit calls the flow field parameters stored by the signal receiving unit and processes the flow field parameters, wherein the processing comprises transcoding, calculation and the like; the strategy base unit outputs a control strategy of the electromagnetic flow control actuator unit according to each control data.
4. The electromagnetic flow control based underwater glider flow control apparatus according to claim 1, wherein: the electromagnetic activation plate comprises a plurality of electric magnetic strips arranged in parallel, and magnetic poles of the electric magnetic strips are alternately arranged in a positive mode and a negative mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010580815.7A CN111674533A (en) | 2020-06-23 | 2020-06-23 | Underwater glider flow control device based on electromagnetic flow control |
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| CN202010580815.7A CN111674533A (en) | 2020-06-23 | 2020-06-23 | Underwater glider flow control device based on electromagnetic flow control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112986875A (en) * | 2021-04-13 | 2021-06-18 | 中国海洋大学 | Underwater glider magnetic field characteristic test system, data acquisition method and test method |
| CN113277047A (en) * | 2021-06-18 | 2021-08-20 | 西北工业大学 | Synthetic fluidic device of glider under water based on electromagnetic induction formula |
| CN114771789A (en) * | 2022-04-08 | 2022-07-22 | 西北工业大学 | Electromagnetic flow control device with extremely-high power consumption and application |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112986875A (en) * | 2021-04-13 | 2021-06-18 | 中国海洋大学 | Underwater glider magnetic field characteristic test system, data acquisition method and test method |
| CN112986875B (en) * | 2021-04-13 | 2022-01-14 | 中国海洋大学 | Method for testing magnetic field characteristics of underwater glider |
| CN113277047A (en) * | 2021-06-18 | 2021-08-20 | 西北工业大学 | Synthetic fluidic device of glider under water based on electromagnetic induction formula |
| CN113277047B (en) * | 2021-06-18 | 2022-09-06 | 西北工业大学 | Synthetic fluidic device of glider under water based on electromagnetic induction formula |
| CN114771789A (en) * | 2022-04-08 | 2022-07-22 | 西北工业大学 | Electromagnetic flow control device with extremely-high power consumption and application |
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