CN110220610A - A kind of system that achievable ignition temperature field measures simultaneously with velocity field - Google Patents
A kind of system that achievable ignition temperature field measures simultaneously with velocity field Download PDFInfo
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- CN110220610A CN110220610A CN201810170500.8A CN201810170500A CN110220610A CN 110220610 A CN110220610 A CN 110220610A CN 201810170500 A CN201810170500 A CN 201810170500A CN 110220610 A CN110220610 A CN 110220610A
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- 238000003384 imaging method Methods 0.000 claims abstract description 24
- 238000005070 sampling Methods 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 16
- 239000002245 particle Substances 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 5
- 238000012876 topography Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000000041 tunable diode laser absorption spectroscopy Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
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Abstract
The present invention relates to the systems that a kind of achievable ignition temperature field and velocity field measure simultaneously, including the first CCD camera, first light splitting wedge and laser, the lower left of first CCD camera is provided with the second CCD camera, and second is equipped with imaging screen on the right side of CCD camera, Ronchi grating is provided on the right side of the imaging screen, and the first plane mirror is installed on the right side of Ronchi grating, the second light splitting wedge is provided with below the first light splitting wedge, and first is divided the lower section that wedge is located at second plane mirror, laser is installed on the right side of the isochronous controller, and isochronous controller is located at the lower section of the second CCD camera.The system combines particle imaging technique (PIV) with light deflection image-forming principle, flow field 3D velocity field is measured using particle imaging technique, flow field three-dimensional temperature field is measured using light deflection image-forming principle, the two combines while obtaining 3D velocity field and the temperature field of combustion field.
Description
Technical field
The present invention relates to field of measuring technique, specially a kind of achievable ignition temperature field is with what velocity field measured simultaneously
System.
Background technique
The whole audience of Combustion Flow Field is shown and measurement is the heat that the fields such as Engineering Thermophysics and information optics are not fully solved yet
Point problem, study frontier have extended to the complicated Combustion Flow Field many reference amounts distribution synchro measure of research and development and visual new technology,
Point-measurement technique can be used for simple laminar flame parameter measurement, including use laser-induced optical grating spectrum, be concerned with anti-stoke
The technologies such as this Raman scattering, two-wire atomic fluorescence measure temperature, and the point of local velocity is carried out using laser Doppler vibration
Measurement obtains concentration and temperature using tunable diode laser absorption spectroscopy technology, detects micro fire using chamber enhancing technology
Flame component.However it is modern fresh few to three-dimensional measurement and the display technology simultaneously of the temperature field for burning flow field and velocity field, to temperature
With the measurement of velocity field again there is it is at high cost, expend the problem of time, low efficiency, for this purpose, it is proposed that a kind of achievable
The system that ignition temperature field and velocity field measure simultaneously.
Summary of the invention
The purpose of the present invention is to provide the systems that a kind of achievable ignition temperature field and velocity field measure simultaneously, to solve
It is mentioned above in the background art modern fresh to three-dimensional measurement and the display technology simultaneously of the temperature field for burning flow field and velocity field
It is few, to the measurement in temperature field and velocity field again there is it is at high cost, expend the problem of time, low efficiency.
To achieve the above object, the invention provides the following technical scheme: a kind of achievable ignition temperature field and velocity field are same
When the system that measures, including the first CCD camera, the first light splitting wedge and laser, the lower left setting of first CCD camera
There is the second CCD camera, and imaging screen be installed on the right side of the second CCD camera, is provided with Ronchi grating on the right side of the imaging screen,
And the first plane mirror is installed on the right side of Ronchi grating, it is anti-to be provided with the second plane on the right side of first plane mirror
Mirror is penetrated, the second light splitting wedge is provided with below the first light splitting wedge, and the first light splitting wedge is located at the second plane reflection
The lower section of mirror is equipped with third light splitting wedge below the second light splitting wedge, and the left side of third light splitting wedge is fixed
There are lens, and be provided with the 4th light splitting wedge on the left of lens, set of cylindrical lenses is installed above the 4th light splitting wedge,
And tested flow field is provided with above set of cylindrical lenses, the first CCD camera is connected by connection with an isochronous controller, institute
It states and laser is installed on the right side of isochronous controller, and isochronous controller is located at the lower section of the second CCD camera, the laser
Lower section is provided with host, and signal wire is equipped on the right side of host, is provided with computer on the right side of the signal wire.
Preferably, first CCD camera is provided with 3, and specification between the first CCD camera and the second CCD camera altogether
It is equal.
Preferably, light path angle is in 108 ° of angles between the 4th light splitting wedge and the first light splitting wedge, and the 4th point
Light path angle is in 144 ° of angles between light wedge and second plane mirror.
Preferably, light path angle is in 36 ° of angles between the 4th light splitting wedge and third light splitting wedge, and the 4th is divided
Light path angle is in 72 ° of angles between wedge and the second light splitting wedge.
Preferably, the first plane mirror form of zigzag is distributed in the leftward position in tested flow field, and first is flat
It is equal sized between the reflecting mirror of face.
Preferably, big between the first light splitting wedge, the second light splitting wedge, third light splitting wedge and the 4th light splitting wedge
It is small equal, and L-shaped distribution between the first light splitting wedge, the second light splitting wedge, third light splitting wedge and the 4th light splitting wedge
On the right side in tested flow field.
Preferably, it is electrically connected by conducting wire between the isochronous controller and laser, host, and laser and master
Mutual onrelevant between machine.
During reconstruction of temperature field, grid is turned to by field to be measured is discrete, derives the partial derivative meter that region refractive index indicates
Formula is calculated, and then converts linear algebraic equation systems for non-linear projection.Accurately boundary information can significantly improve reconstruction essence
Degree and speed, fusion prior distribution constraint CS are rebuild, and establish the algorithm for reconstructing model for combining frontier probe
In formula, n be index distribution to be reconstructed, α | | Φ n | |1It is regularization term,For with weight
Anisotropy total variation, FpFor coefficient matrix relevant to opticpath, b is projection information sampling.For Combustion Flow Field, flame
Boundary is formed by connecting by the maximum discrete point of refractive index gradient.Each step reconstruction iteration be all alternately performed anisotropy total variation and
Frontier probe is modified, to obtain the reconstruction index distribution for meeting iteration ends criterion, and then leads to-Dell by lattice Lars
Formula and flow regime equation obtain density and Temperature Distribution.
The beneficial effects of the present invention are:
The present invention combines particle imaging technique (PIV) with light deflection image-forming principle, is measured using particle imaging technique
Flow field 3D velocity field measures flow field three-dimensional temperature field using light deflection image-forming principle, and the two combines and obtains the three-dimensional of combustion field
Velocity field and temperature field, the first CCD camera shoot combustion field, and combine the processing of INSIGHT4G processing system that combustion field can be obtained
Three-dimensional velocity information, utilize the second CCD camera shooting light splitting after four Moire fringes and combine light deflection CT reconstruction technique
Processing obtains the three-dimensional temperature field of combustion field, the 4th light splitting wedge and second plane mirror, the first light splitting wedge, the second light splitting
Different optical path angles can reflect optical path between wedge and third light splitting wedge, and beam of laser light source is divided into four
Stock passes through tested flow field, forms 4 tunnels by the first light splitting wedge, the second light splitting wedge and third light splitting this 3 light splitting wedges of wedge
Light beam is detected, the multi-angle that controllable precise is formed by changing each beam direction detects light beam by tested flow field, passes through first
The spatial arrangement and combination of plane mirror and second plane mirror, the laser beam for carrying different perspectives information of flow are modulated
For collimated light beam, after Ronchi grating normal thereto, moiré topography battle array is formed on imaging screen, the first light splitting wedge,
Spatial arrangement and combination between second light splitting wedge, third light splitting wedge and the 4th light splitting wedge makes optical path spread out, and with
Various angles pass through tested flow field, make finally to form 4 groups of images on imaging screen, by isochronous controller, make particle imaging with
Bar graph battle array synchronized sampling (3 the first CCD cameras and the second CCD camera simultaneously operation), and it is common for combustion field
And important axial symmetry flame, light deflection CT, which generates Moire fringe using any visual angle monochromatic light road detection flow field, can meet sampling
It is required that.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is workflow schematic diagram of the present invention.
In figure: 1, the first CCD camera, the 2, second CCD camera, 3, imaging screen, 4, Ronchi grating, the 5, first plane reflection
Mirror, 6, second plane mirror, the 7, first light splitting wedge, the 8, second light splitting wedge, 9, third light splitting wedge, 10, lens, 11,
4th light splitting wedge, 12, set of cylindrical lenses, 13, tested flow field, 14, isochronous controller, 15, laser, 16, host, 17, lead
Line, 18, computer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of achievable ignition temperature field is surveyed simultaneously with velocity field
The system of amount, including the first CCD camera 1, first light splitting wedge 7 and laser 15, the lower left of the first CCD camera 1 are provided with
Second CCD camera 2, and the right side of the second CCD camera 2 is equipped with imaging screen 3, the first CCD camera 1 is provided with 3, and first altogether
Specification is equal between CCD camera 1 and the second CCD camera 2, and the first CCD camera 1 shoots combustion field, and combines at INSIGHT 4G
The three-dimensional velocity information of combustion field can be obtained in the processing of reason system, utilizes four Moire fringes after the shooting light splitting of the second CCD camera 2
And handle to obtain the three-dimensional temperature field of combustion field in conjunction with light deflection CT reconstruction technique, the right side of imaging screen 3 is provided with Ronchi grating
4, and the right side of Ronchi grating 4 is equipped with the first plane mirror 5, the right side of the first plane mirror 5 is provided with the second plane
The lower section of reflecting mirror 6, the first light splitting wedge 7 is provided with the second light splitting wedge 8, and to be located at the second plane anti-for the first light splitting wedge 7
The lower section of mirror 6 is penetrated, the lower section of the second light splitting wedge 8 is equipped with third light splitting wedge 9, and the left side of third light splitting wedge 9 is fixed with
Lens 10, and the left side of lens 10 is provided with the 4th light splitting wedge 11, light between the 4th light splitting wedge 11 and the first light splitting wedge 7
Road angle be in 108 ° of angles, and the 4th light splitting wedge 11 and second plane mirror 6 between light path angle be in 144 ° of angles, the 4th
Being divided light path angle between wedge 11 and third light splitting wedge 9 is in 36 ° of angles, and the 4th light splitting wedge 11 and second is divided wedge
Light path angle is in 72 ° of angles between 8, and the 4th light splitting wedge 11 and second plane mirror 6, first are divided wedge 7, second and are divided
Different optical path angles can reflect optical path between wedge 8 and third light splitting wedge 9, and beam of laser light source is divided into four
Stock passes through tested flow field 13, is divided wedge 8 by the first light splitting wedge 7, second and third is divided this 3 light splitting wedge shapes of wedge 9
Light beam is detected at 4 tunnels, the multi-angle that controllable precise is formed by changing each beam direction detects light beam and passes through tested flow field 13, the
The top of four light splitting wedges 11 is equipped with set of cylindrical lenses 12, and the top of set of cylindrical lenses 12 is provided with tested flow field 13, the
One plane mirror, 5 form of zigzag is distributed in the leftward position in tested flow field 13, and size phase between the first plane mirror 5
Deng carrying different perspectives information of flow by the spatial arrangement and combination of the first plane mirror 5 and second plane mirror 6
Laser beam is modulated to collimated light beam, after Ronchi grating 4 normal thereto, forms moiré topography on imaging screen 3
Battle array, it is equal in magnitude between the 4th light splitting wedge 11 that the first light splitting wedge 7, second is divided wedge 8, third is divided wedge 9, and the
One light splitting wedge 7, second be divided wedge 8, third light splitting wedge 9 the 4th light splitting wedge 11 between it is L-shaped be distributed in it is tested
The right side in flow field 13, the first light splitting wedge 7, second are divided between wedge 8, third light splitting wedge 9 and the 4th light splitting wedge 11
Spatial arrangement and combination makes optical path spread out, and passes through tested flow field 13 with various angles, makes finally to form 4 on imaging screen 3
Group image, the right side of isochronous controller 14 is equipped with laser 15, and isochronous controller 14 is located at the lower section of the second CCD camera 2,
The lower section of laser 15 is provided with host 16, and the right side of host 16 is equipped with conducting wire 17, isochronous controller 14 and laser 15,
It is electrically connected by conducting wire 17 between host 16, and mutual onrelevant between laser 15 and host 16, by isochronous controller
14, make particle imaging and bar graph battle array synchronized sampling (3 the first CCD cameras 1 and second CCD camera 2 move at the same time), and
Axial symmetry flame common for combustion field and important, light deflection CT generate More using any visual angle monochromatic light road detection flow field
Striped can meet sampling request, and the right side of conducting wire 17 is provided with computer 18.
Working principle: the system laser 15 first measured simultaneously for this kind of achievable ignition temperature field and velocity field
(Nd:YAG) laser (532nm) issued is first divided into two equal beam laser of energy, and wherein beam of laser is by set of cylindrical lenses 12
It is modulated to cone-beam light to be imaged for V3V, acquires particle picture, benefit by 3 the first CCD cameras 1 (2352 pixels × 1768 pixels)
With " control reflection mirror array modulates spatial light " this principle and thought of Digital Micromirror Device, new light deflection CT sampling is constructed
Method: the another beam of laser after being divided is divided wedge 8 by the first light splitting wedge 7, second and third is divided after beam-expanding collimation
This 3 light splitting wedges of wedge 9 form 4 tunnels and detect light beam, and the multi-angle that controllable precise is formed by changing each beam direction detects
Light beam is carried not by tested flow field 13 by the spatial arrangement and combination of the first plane mirror 5 and second plane mirror 6
Laser beam with visual angle information of flow is modulated to collimated light beam, after Ronchi grating 4 normal thereto, in imaging screen 3
Upper formation moiré topography battle array carries out dynamic sampling, the light deflection by 1 the second CCD camera 2 (2352 pixels × 1768 pixels)
Imaging system overcomes existing more (point) light path systems and needs multiple groups image-forming component and Duo Tai CCD photographic device, it is difficult to ensure that light
The defects of road is strictly replicated completes instant 4 direction projection oldered array imaging, by isochronous controller on CCD single image
14 (SYNC) make particle imaging and bar graph battle array synchronized sampling (4 CCD cameras move at the same time), and common for combustion field
And important axial symmetry flame, light deflection CT, which generates Moire fringe using any visual angle monochromatic light road detection flow field, can meet sampling
It is required that image analysis uses advanced INSIGHT 4G processing system, algorithm uses pipeline processing mode, obtains fluid knot
The complete information of structure, including mean flow rate, vorticity, turbulent flow information, higher derivative and higher order statistical value, the reconstruction of three-dimensional temperature field
There are two steps, first stripe information of the extraction containing high intensity noise, analyze from noise producing cause and noise intensity, electronics dissipates
Spot interferes moiré topography noise caused by (ESPI) bar graph noise and trace particle to have good analogy, uses for reference ESPI
The denoising of bar graph is theoretical, using the directionality of bar graph, using a kind of Moire fringe swirler blade angle method based on blur direction,
4 blur direction windows are defined in current neighborhood of a point, and the determination of one-dimensional, the accurate direction window of classical swirler blade angle turns
The determination for becoming blur direction window, when carrying out low-pass filtering in determining window, using adaptive weighted mean filter generation
For traditional median filtering, fringe stopping is based on to the bar graph after denoising and deviation information is extracted in displacement analysis；Then right
Reconstruction of temperature field turns to grid for field to be measured is discrete, and it is public to derive that partial derivative that region refractive index indicates calculates
Formula, and then linear algebraic equation systems are converted by non-linear projection, accurately boundary information can significantly improve reconstruction essence
Degree and speed, fusion prior distribution constraint CS are rebuild, and establish the algorithm for reconstructing model for combining frontier probe:In formula, n be index distribution to be reconstructed, α | | Φ n | |1It is regularization
,For the anisotropy total variation with weight, FpFor coefficient matrix relevant to opticpath, b is projection
Intelligence sample, for Combustion Flow Field, flame edge is formed by connecting by the maximum discrete point of refractive index gradient, each step reconstruction iteration
It is all alternately performed anisotropy total variation and frontier probe is modified, to obtain the reconstruction refraction for meeting iteration ends criterion
Rate distribution, so by lattice Lars it is logical-Dell's formula and flow regime equation obtain density and Temperature Distribution, in the method, adopt
Particle imaging technique (PIV) combines light deflection image-forming principle to measure Combustion Flow Field velocity field, temperature field, compares microfluid three
Micro HPTV system combination LIP systematic survey velocity field, temperature field in dimension velocity field, temperature field measurement method, it is more economical,
Can measure routine scale also can measure miniature scale, measure simultaneously and display with non-contact, three-dimensional, velocity field and temperature field
Advantage.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. the system that a kind of achievable ignition temperature field and velocity field measure simultaneously, including the first CCD camera (1), the first light splitting
Wedge (7) and laser (15), it is characterised in that: the lower left of first CCD camera (1) is provided with the second CCD camera
(2), it is equipped with imaging screen (3) on the right side of second CCD camera (2), is provided with Ronchi grating on the right side of the imaging screen (3)
(4), it is equipped with the first plane mirror (5) on the right side of the Ronchi grating (4), the right side of first plane mirror (5)
It is provided with second plane mirror (6), is provided with the second light splitting wedge (8) below first light splitting wedge (7), first point
Light wedge (7) is located at the lower section of the second plane mirror (6), is equipped with third below second light splitting wedge (8)
It is divided wedge (9), is fixed with lens (10) on the left of third light splitting wedge (9), is provided on the left of the lens (10)
4th is divided wedge (11), is equipped with set of cylindrical lenses (12) above the 4th light splitting wedge (11), the cylindrical lens
It is provided with above group (12) tested flow field (13), the first CCD camera (1) passes through connection and isochronous controller (14) phase
Even, it is equipped with laser (15) on the right side of the isochronous controller (14), the isochronous controller (14) is located at the second CCD camera
(2) lower section is provided with host (16) below the laser (15), and is equipped with signal wire on the right side of host (16)
(17), computer (18) are provided on the right side of the signal wire (17).
2. the system that achievable ignition temperature field according to claim 1 and velocity field measure simultaneously, it is characterised in that: institute
It states the first CCD camera (1) and is provided with 3 altogether, and specification is equal between the first CCD camera (1) and the second CCD camera (2).
3. the system that achievable ignition temperature field according to claim 1 and velocity field measure simultaneously, it is characterised in that: institute
Stating light path angle between the 4th light splitting wedge (11) and the first light splitting wedge (7) is in 108 ° of angles, and the 4th is divided wedge (11)
Light path angle is in 144 ° of angles between second plane mirror (6).
4. the system that achievable ignition temperature field according to claim 1 and velocity field measure simultaneously, it is characterised in that: institute
Light path angle is stated between the 4th light splitting wedge (11) and third light splitting wedge (9) in 36 ° of angles, and the 4th light splitting wedge (11) and
Light path angle is in 72 ° of angles between second light splitting wedge (8).
5. the system that achievable ignition temperature field according to claim 1 and velocity field measure simultaneously, it is characterised in that: institute
State the leftward position that the first plane mirror (5) form of zigzag is distributed in tested flow field (13), and the first plane mirror (5)
Between it is equal sized.
6. the system that achievable ignition temperature field according to claim 1 and velocity field measure simultaneously, it is characterised in that: institute
State the first light splitting wedge (7), second light splitting wedge (8), third light splitting wedge (9) and the 4th be divided wedge (11) between size phase
Deng, and the first light splitting wedge (7), the second light splitting wedge (8), third light splitting wedge (9) and the 4th are divided between wedge (11) and are in
L shape is distributed in the right side of tested flow field (13).
7. the system that achievable ignition temperature field according to claim 1 and velocity field measure simultaneously, it is characterised in that: institute
It states and is electrically connected by conducting wire (17) between isochronous controller (14) and laser (15), host (16), and laser (15)
The mutual onrelevant between host (16).
8. the achievable ignition temperature field according to 1 to 7 any claim of the claims measures simultaneously with velocity field
System, it is characterised in that: the algorithm for reconstructing model in conjunction with frontier probe is
In formula, n be index distribution to be reconstructed, α | | Φ n | |1It is regularization term,For with weight it is each to
Anisotropic total variation, FpFor coefficient matrix relevant to opticpath, b is projection information sampling.
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| CN201810170500.8A CN110220610A (en) | 2018-03-01 | 2018-03-01 | A kind of system that achievable ignition temperature field measures simultaneously with velocity field |
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| CN201810170500.8A CN110220610A (en) | 2018-03-01 | 2018-03-01 | A kind of system that achievable ignition temperature field measures simultaneously with velocity field |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823849A (en) * | 2019-09-25 | 2020-02-21 | 北京航空航天大学 | Quantitative measurement method and device for transient combustion field |
| CN111458533A (en) * | 2020-04-17 | 2020-07-28 | 东北电力大学 | Concentration field-density field synchronous measurement system and method |
| CN112255186A (en) * | 2020-10-30 | 2021-01-22 | 中国人民解放军战略支援部队航天工程大学 | Method and system for calculating integral absorbance of non-uniform flow field |
| CN113092056A (en) * | 2021-04-25 | 2021-07-09 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Method for measuring three-dimensional density field of hypersonic flow field |
| CN113295629A (en) * | 2021-04-08 | 2021-08-24 | 西安电子科技大学 | Spectral absorptivity distribution acquisition method and system |
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| CN114755449A (en) * | 2022-06-14 | 2022-07-15 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Particle image speed measurement distortion correction device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823849A (en) * | 2019-09-25 | 2020-02-21 | 北京航空航天大学 | Quantitative measurement method and device for transient combustion field |
| CN111458533A (en) * | 2020-04-17 | 2020-07-28 | 东北电力大学 | Concentration field-density field synchronous measurement system and method |
| CN112255186A (en) * | 2020-10-30 | 2021-01-22 | 中国人民解放军战略支援部队航天工程大学 | Method and system for calculating integral absorbance of non-uniform flow field |
| CN112255186B (en) * | 2020-10-30 | 2021-09-28 | 中国人民解放军战略支援部队航天工程大学 | Method and system for calculating integral absorbance of non-uniform flow field |
| CN113295629A (en) * | 2021-04-08 | 2021-08-24 | 西安电子科技大学 | Spectral absorptivity distribution acquisition method and system |
| CN113092056A (en) * | 2021-04-25 | 2021-07-09 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Method for measuring three-dimensional density field of hypersonic flow field |
| CN114518230A (en) * | 2022-03-01 | 2022-05-20 | 上海交通大学 | Engine plume field speed and temperature synchronous measurement system |
| CN114518230B (en) * | 2022-03-01 | 2022-10-28 | 上海交通大学 | Engine plume field speed and temperature synchronous measurement system |
| CN114754891A (en) * | 2022-06-13 | 2022-07-15 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Combustion flow field optical temperature field measuring device and measuring method |
| CN114754891B (en) * | 2022-06-13 | 2022-08-16 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Combustion flow field optical temperature field measuring device and measuring method |
| CN114755449A (en) * | 2022-06-14 | 2022-07-15 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Particle image speed measurement distortion correction device and method |
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