CN111692117A - Gas compressor active flow control method and device based on sweep frequency type ejector - Google Patents
Gas compressor active flow control method and device based on sweep frequency type ejector Download PDFInfo
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- CN111692117A CN111692117A CN202010439430.9A CN202010439430A CN111692117A CN 111692117 A CN111692117 A CN 111692117A CN 202010439430 A CN202010439430 A CN 202010439430A CN 111692117 A CN111692117 A CN 111692117A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
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Abstract
The invention discloses a method and a device for controlling the active flow of a gas compressor based on a sweep frequency type ejector, wherein the method comprises the following steps: collecting the pneumatic parameters of the blade cascade; determining dimensionless frequency and momentum coefficient according to the pneumatic parameters; determining the geometric size, the number and the arrangement position of the sweep jet device according to the dimensionless frequency and the momentum coefficient; and controlling the separation flow in the flow channel of the gas compressor according to the geometric dimension, the number and the arrangement position of the sweep jet device. According to the active flow control method of the gas compressor based on the frequency sweeping type ejector, the frequency sweeping type ejector is arranged on the surface of the suction surface or the end wall of the blade of the gas compressor to control the separation of the angle area, the control range is wider, the turbulent kinetic energy in a flow field can be controlled, the flow field is more orderly, the pneumatic performance of the cascade of the gas compressor can be improved, the performance of an engine is further improved, and the active flow control method of the gas compressor based on the frequency sweeping type ejector has higher engineering value and economic benefit.
Description
Technical Field
The invention relates to the technical field of flow control, in particular to an active flow control method and device for a gas compressor based on a sweep frequency type ejector.
Background
Flow separation in the cascade is often difficult to avoid due to the presence of the counter pressure gradient within the compressor.
The separation of the corner regions generated between the rear part of the suction surface of the compressor and the end wall can affect the pneumatic performance of the compressor to a great extent, and the separation of the corner regions and the implementation of a flow control means have important significance for reducing the pneumatic loss in the compressor, improving the stability of parts of the compressor and further improving the performance of an engine.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the first purpose of the invention is to provide a method for controlling the active flow of the compressor based on the sweep frequency type ejector, which controls the separation of the angular regions by arranging the sweep frequency type ejector on the surface of the suction surface or the end wall of the blade of the compressor, has the advantages of larger control range, capability of controlling the turbulent kinetic energy in a flow field and enabling the flow field to be more orderly, and can improve the pneumatic performance of the cascade of the compressor, further improve the performance of an engine, and have higher engineering value and economic benefit.
The second purpose of the invention is to provide an active flow control device of the gas compressor based on the sweep frequency type ejector.
A third object of the invention is to propose an electronic device.
A fourth object of the invention is to propose a computer-readable storage medium.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a method for controlling an active flow of a gas compressor based on a frequency sweep ejector, including the following steps: collecting the pneumatic parameters of the blade cascade; determining dimensionless frequency and momentum coefficients according to the pneumatic parameters; determining the geometric size, the number and the arrangement position of the sweep jet ejector according to the dimensionless frequency and the momentum coefficient; and controlling the separation flow in the flow channel of the gas compressor according to the geometric dimension, the number and the arrangement position of the frequency sweeping jet device.
In addition, the method for controlling the active flow of the compressor based on the sweep frequency type ejector according to the embodiment of the invention can also have the following additional technical characteristics:
according to an embodiment of the invention, the dimensionless frequency is obtained by the following formula:
wherein f is the frequency of the sweep jet device, b is the axial chord length of the compressor blade, vx,inThe flow velocity at the inlet of the compressor cascade;
the jet flow momentum coefficient is obtained by the following formula:
wherein m isjetIs the average flow rate v of jetjetIs the time-average flow rate of the jet, q0Is the dynamic pressure at the compressor inlet, and A is the area at the compressor inlet.
According to one embodiment of the invention, the sweep jet device is arranged inside the angular separation of the surface of the suction surface of the compressor blade, or at the initial position of the angular separation of the surface of the suction surface of the compressor blade, or at the end wall of the compressor.
According to one embodiment of the invention, the angle between the swept frequency ejector and the blade is 15-30 degrees.
According to the active flow control method of the gas compressor based on the sweep frequency type ejector, the dimensionless frequency and the momentum coefficient are determined according to the pneumatic parameters of the blade cascade, the geometric size, the number and the arrangement position of the sweep frequency ejector are further determined, and the angular region separation of the gas compressor is effectively controlled. Therefore, the sweep frequency type jet device is arranged on the surface of the suction surface or the end wall of the blade of the compressor to control the separation of the angle area, the control range is larger, the turbulent kinetic energy in a flow field can be controlled, the flow field is more ordered, the pneumatic performance of the blade cascade of the compressor can be improved, the performance of an engine is further improved, and the engineering value and the economic benefit are higher.
In order to achieve the above object, a second aspect of the present invention provides an active flow control device for a compressor based on a swept-frequency ejector, including: the acquisition module is used for acquiring the pneumatic parameters of the blade cascade; the first determining module is used for determining dimensionless frequency and momentum coefficient according to the pneumatic parameters; the second determination module is used for determining the geometric size, the number and the arrangement position of the sweep jet device according to the dimensionless frequency and the momentum coefficient; and the control module is used for controlling the separation flow in the flow channel of the gas compressor according to the geometric dimension, the number and the arrangement position of the frequency sweeping jet device.
According to an embodiment of the invention, the dimensionless frequency is obtained by the following formula:
wherein f is the frequency of the sweep jet device, b is the axial chord length of the compressor blade, vx,inThe flow velocity at the inlet of the compressor cascade;
the jet flow momentum coefficient is obtained by the following formula:
wherein m isjetIs the average flow rate v of jetjetIs the time-average flow rate of the jet, q0Is the dynamic pressure at the compressor inlet, and A is the area at the compressor inlet.
According to one embodiment of the invention, the sweep jet device is arranged inside the angular separation of the surface of the suction surface of the compressor blade, or at the initial position of the angular separation of the surface of the suction surface of the compressor blade, or at the end wall of the compressor.
According to one embodiment of the invention, the angle between the swept frequency ejector and the blade is 15-30 degrees.
According to the active flow control device of the gas compressor based on the sweep frequency type ejector, the dimensionless frequency and the momentum coefficient are determined according to the pneumatic parameters of the blade cascade, the geometric size, the number and the arrangement position of the sweep frequency ejector are further determined, and the angular region separation of the gas compressor is effectively controlled. Therefore, the sweep frequency type jet device is arranged on the surface of the suction surface or the end wall of the blade of the compressor to control the separation of the angle area, the control range is larger, the turbulent kinetic energy in a flow field can be controlled, the flow field is more ordered, the pneumatic performance of the blade cascade of the compressor can be improved, the performance of an engine is further improved, and the engineering value and the economic benefit are higher.
To achieve the above object, a third aspect of the present invention provides an electronic device, including: the active flow control method of the gas compressor based on the sweep frequency type jet device comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the active flow control method of the gas compressor based on the sweep frequency type jet device is realized.
In order to achieve the above object, a fourth aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the above method for active flow control of a compressor based on a swept-frequency type jet device.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flow chart of an active flow control method of a gas compressor based on a sweep frequency type ejector according to an embodiment of the invention;
FIG. 2 is a schematic diagram of the working principle of a swept frequency ejector according to one embodiment of the invention;
FIG. 3 is a schematic diagram of the placement of a swept frequency ejector within a compressor cascade according to one embodiment of the invention;
fig. 4 is a block schematic diagram of a compressor active flow control device based on a swept frequency type ejector according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes an active flow control method and an active flow control device for a gas compressor based on a sweep frequency type ejector, which are provided by the embodiment of the invention, with reference to the attached drawings.
Fig. 1 is a flowchart of an active flow control method of a gas compressor based on a swept-frequency ejector according to an embodiment of the present invention.
In this embodiment, the swept-frequency ejector is capable of converting a steady source of gas at the inlet into a periodically swept flow pattern at the outlet without the use of any valves and other reciprocating components. In addition, the device also has the characteristic of high frequency, and the specific size of the frequency can be adjusted by changing the geometrical parameters of each part of the ejector and the pressure at the inlet.
First, in order to describe the working principle of the swept-frequency ejector, the coanda effect is described first. The coanda effect refers to the tendency of a jet to flow proximate to a solid surface as it flows near the solid surface. As shown in fig. 2, a stable pressure source is provided at the left inlet of the sweep jet device, after fluid at the inlet is injected into the sweep jet device, the fluid flows close to the coanda surface on one side due to the coanda effect, and the fluid does not flow close to the upper wall surface, so that most of the fluid flows downward out of the sweep jet device through the throat, and meanwhile, a feedback fluid is formed in the upper feedback channel, flows to the initial position of the jet flow, pushes the jet flow direction to the opposite coanda surface, and at this time, most of the fluid flows upward out of the sweep jet device through the throat and forms a feedback fluid in the lower feedback channel. So reciprocating, the flow at the outlet takes on a flow pattern that is swept over a period.
Compared with the traditional steady active flow control means, the influence range of the sweep frequency type jet device on the flow field is larger. Meanwhile, the introduction of unsteady excitation can play an active control role in the turbulent kinetic energy in the flow field, and when reasonable control parameters are adopted, the control effect of the unsteady excitation is obviously superior to that of steady flow control.
Specifically, as shown in fig. 1, the method for controlling the active flow of the compressor based on the swept-frequency ejector includes the following steps:
and S1, acquiring the aerodynamic parameters of the blade cascade.
And S2, determining the dimensionless frequency and momentum coefficient according to the aerodynamic parameters.
It can be understood that the embodiment of the present invention may acquire the pneumatic parameters of the blade cascade by an acquisition method in the related art, and details are not described herein for avoiding redundancy.
Further, according to an embodiment of the present invention, the dimensionless frequency is obtained by the following formula:
wherein f is the frequency of the sweep jet device, b is the axial chord length of the blades of the air compressor, vx,inThe flow velocity at the inlet of the blade grid of the compressor;
the jet momentum coefficient is obtained by the following formula:
wherein m isjetIs the average flow rate v of jetjetIs the time-average flow rate of the jet, q0Is the dynamic pressure at the compressor inlet, and A is the area at the compressor inlet.
According to one embodiment of the invention, the angle between the sweep jet and the blade is 15-30 degrees.
It should be noted that the specific selection of the aerodynamic parameters should ensure a dimensionless frequency F+Not less than 1, jet flow momentum coefficient not more than 0.05 percent and CμLess than or equal to 0.2 percent, and the included angle between the sweep jet device and the blade is between 15 and 30 degrees. Wherein, when F+When the content is more than or equal to 1, the effect is more obvious, and when the content is more than or equal to 0.05 percent, the content is more than or equal to CμWhen the content is less than or equal to 0.5 percent, the effect is more obvious.
And S3, determining the geometric size, the number and the arrangement position of the sweep jet device according to the dimensionless frequency and the momentum coefficient.
Alternatively, according to an embodiment of the invention, as shown in fig. 3, the sweep jet device is arranged inside the angular separation of the surface of the suction surface of the compressor blade, or at the initial position of the angular separation of the surface of the suction surface of the compressor blade, or at the end wall of the compressor.
That is, when the position of the sweep-frequency type jet device is in the corner separation or the separation starting position, the effect is more obvious.
And S4, controlling the separation flow in the flow channel of the compressor according to the geometric dimension, the number and the arrangement position of the sweep jet device.
Therefore, the embodiment of the invention can lead the sweep frequency jet device as a new unsteady active flow control technology to the control of the corner separation of the compressor aiming at the problems of the increase of the flow loss and the deterioration of the stability caused by the three-dimensional flow separation in the compressor. The sweep frequency ejectors in single or multiple arrays are added in the proper positions in the blades or on the end walls of the compressor, so that the effect of effectively controlling the separation flow in the flow channel of the compressor can be achieved, the control range is wider, the generation and development of the separation flow in the flow channel of the compressor can be effectively slowed down, and the pneumatic performance of the compressor is improved. And through the method of different sweep frequency ejector inlet pressures and ejector geometric shapes, different sweep frequencies can be realized, the turbulent kinetic energy spectrum in the flow field is further controlled, the whole flow field is more ordered, the active flow control method in the gas compressor is enriched, theoretical technical reserve can be provided for the pneumatic performance improvement direction of the gas compressor, and the method has practicability and engineering value.
According to the active flow control method of the gas compressor based on the sweep frequency type ejector, which is provided by the embodiment of the invention, dimensionless frequency and momentum coefficients are determined according to pneumatic parameters of a blade cascade, so that the geometric size, the number and the arrangement position of the sweep frequency ejector are further determined, and the angular region separation of the gas compressor is effectively controlled. Therefore, the sweep frequency type jet device is arranged on the surface of the suction surface or the end wall of the blade of the compressor to control the separation of the angle area, the control range is larger, the turbulent kinetic energy in a flow field can be controlled, the flow field is more ordered, the pneumatic performance of the blade cascade of the compressor can be improved, the performance of an engine is further improved, and the engineering value and the economic benefit are higher.
Fig. 4 is a block diagram of an active flow control device of a compressor based on a sweep frequency type ejector according to an embodiment of the invention.
As shown in fig. 4, the active flow control device of the compressor based on the sweep frequency type ejector comprises: an acquisition module 100, a first determination module 200, a second determination module 300, and a control module 400.
Wherein, the collection module 100 is used for collecting the pneumatic parameters of the blade cascade. The first determination module 200 is configured to determine a dimensionless frequency and a momentum coefficient based on the aerodynamic parameter. The second determination module 300 is used for determining the geometric size, the number and the arrangement position of the sweep jet ejectors according to the dimensionless frequency and the momentum coefficient. The control module 400 is used to control the separation flow in the compressor flow channel according to the geometric size, number and arrangement position of the sweep jet device.
According to one embodiment of the invention, the dimensionless frequency is obtained by the following formula:
wherein f is the frequency of the sweep jet device, b is the axial chord length of the blades of the air compressor, vx,inThe flow velocity at the inlet of the blade grid of the compressor;
the jet momentum coefficient is obtained by the following formula:
wherein m isjetIs the average flow rate v of jetjetIs the time-average flow rate of the jet, q0Is the dynamic pressure at the compressor inlet, and A is the area at the compressor inlet.
According to one embodiment of the invention, the arrangement position of the sweep jet device is arranged inside the surface angular separation of the suction surface of the compressor blade, or is arranged at the initial position of the surface angular separation of the suction surface of the compressor blade, or is arranged at the end wall of the compressor.
According to one embodiment of the invention, the angle between the sweep jet and the blade is 15-30 degrees.
It should be noted that the above explanation of the embodiment of the method for controlling the active flow of the gas compressor based on the swept-frequency ejector is also applicable to the device for controlling the active flow of the gas compressor based on the swept-frequency ejector in this embodiment, and is not repeated here.
According to the active flow control device of the gas compressor based on the sweep frequency type ejector, which is provided by the embodiment of the invention, dimensionless frequency and momentum coefficients are determined according to pneumatic parameters of a blade cascade, so that the geometric size, the number and the arrangement position of the sweep frequency ejector are further determined, and the angular region separation of the gas compressor is effectively controlled. Therefore, the sweep frequency type jet device is arranged on the surface of the suction surface or the end wall of the blade of the compressor to control the separation of the angle area, the control range is larger, the turbulent kinetic energy in a flow field can be controlled, the flow field is more ordered, the pneumatic performance of the blade cascade of the compressor can be improved, the performance of an engine is further improved, and the engineering value and the economic benefit are higher.
An embodiment of the present invention provides an electronic device, including: the active flow control method of the gas compressor based on the sweep frequency type jet device is realized when the processor executes the program.
The embodiment of the invention provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the program is executed by a processor to realize the active flow control method of the air compressor based on the sweep frequency type jet device.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A gas compressor active flow control method based on a sweep frequency type ejector is characterized by comprising the following steps:
collecting the pneumatic parameters of the blade cascade;
determining dimensionless frequency and momentum coefficients according to the pneumatic parameters;
determining the geometric size, the number and the arrangement position of the sweep jet ejector according to the dimensionless frequency and the momentum coefficient; and
and controlling the separation flow in the flow channel of the gas compressor according to the geometric dimension, the number and the arrangement position of the frequency sweeping jet device.
2. A method for active flow control of a sweep frequency type ejector-based compressor as claimed in claim 1, wherein the dimensionless frequency is obtained by the following formula:
wherein f is the frequency of the sweep jet device, b is the axial chord length of the compressor blade, vx,inThe flow velocity at the inlet of the compressor cascade;
the jet flow momentum coefficient is obtained by the following formula:
wherein m isjetIs the average flow rate v of jetjetIs the time-average flow rate of the jet, q0Is the dynamic pressure at the compressor inlet, and A is the area at the compressor inlet.
3. A method for active flow control of a gas compressor based on a swept frequency type ejector according to claim 1,
the arrangement position of the sweep frequency ejector is arranged in the surface angular separation of the suction surface of the blade of the gas compressor, or is arranged at the initial position of the surface angular separation of the suction surface of the blade of the gas compressor, or is arranged at the end wall of the gas compressor.
4. A method for actively controlling the flow of the air compressor based on the sweep frequency type ejector as claimed in claim 1, wherein the included angle between the sweep frequency ejector and the blade is 15-30 °.
5. A compressor initiative flow control device based on sweep frequency formula ejector, characterized by that includes:
the acquisition module is used for acquiring the pneumatic parameters of the blade cascade;
the first determining module is used for determining dimensionless frequency and momentum coefficient according to the pneumatic parameters;
the second determination module is used for determining the geometric size, the number and the arrangement position of the sweep jet device according to the dimensionless frequency and the momentum coefficient; and
and the control module is used for controlling the separation flow in the flow channel of the gas compressor according to the geometric dimension, the number and the arrangement position of the frequency sweeping jet device.
6. A swept frequency ejector-based compressor active flow control device as claimed in claim 5, wherein the dimensionless frequency is obtained by the following formula:
wherein f is the frequency of the sweep jet device, b is the axial chord length of the compressor blade, vx,inThe flow velocity at the inlet of the compressor cascade;
the jet flow momentum coefficient is obtained by the following formula:
wherein m isjetIs the average flow rate v of jetjetIs the time-average flow rate of the jet, q0Is the dynamic pressure at the compressor inlet, and A is the area at the compressor inlet.
7. A sweep frequency type ejector-based compressor active flow control device as claimed in claim 5,
the arrangement position of the sweep frequency ejector is arranged in the surface angular separation of the suction surface of the blade of the gas compressor, or is arranged at the initial position of the surface angular separation of the suction surface of the blade of the gas compressor, or is arranged at the end wall of the gas compressor.
8. A compressor active flow control device based on a swept frequency ejector as claimed in claim 5, wherein the angle between the swept frequency ejector and the blade is 15-30 degrees.
9. An electronic device, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor and arranged to perform the swept frequency ejector-based compressor active flow control method of any one of claims 1 to 4.
10. A computer-readable storage medium, on which a computer program is stored, the program being executed by a processor for implementing the swept frequency ejector-based compressor active flow control method as claimed in any one of claims 1 to 4.
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| CN202010439430.9A CN111692117A (en) | 2020-05-22 | 2020-05-22 | Gas compressor active flow control method and device based on sweep frequency type ejector |
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| CN202010439430.9A CN111692117A (en) | 2020-05-22 | 2020-05-22 | Gas compressor active flow control method and device based on sweep frequency type ejector |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240602A (en) * | 2007-03-27 | 2008-10-09 | Calsonic Compressor Inc | Gas compressor |
| CN103982462A (en) * | 2014-05-15 | 2014-08-13 | 北京理工大学 | Wavelike jet method for blade trailing edges |
-
2020
- 2020-05-22 CN CN202010439430.9A patent/CN111692117A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240602A (en) * | 2007-03-27 | 2008-10-09 | Calsonic Compressor Inc | Gas compressor |
| CN103982462A (en) * | 2014-05-15 | 2014-08-13 | 北京理工大学 | Wavelike jet method for blade trailing edges |
Non-Patent Citations (2)
| Title |
|---|
| QINGHE MENG ET AL: "NUMERICAL INVESTIGATION OF A SWEEPING JET ACTUATOR FOR ACTIVE FLOW CONTROL IN A COMPRESSOR CASCADE", 《PROCEEDINGS OF ASME TURBO EXPO 2018》 * |
| 孟庆鹤等: "扫频式射流对设计工况压气机叶栅流动分离影响的数值研究", 《推进技术》 * |
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Application publication date: 20200922 |