CN114295532B - Icing porosity measuring device and method - Google Patents
Icing porosity measuring device and method Download PDFInfo
- Publication number
- CN114295532B CN114295532B CN202210221236.2A CN202210221236A CN114295532B CN 114295532 B CN114295532 B CN 114295532B CN 202210221236 A CN202210221236 A CN 202210221236A CN 114295532 B CN114295532 B CN 114295532B
- Authority
- CN
- China
- Prior art keywords
- ice
- icing
- optical power
- porosity
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention belongs to the field of icing wind tunnel tests, and particularly relates to an icing porosity measuring device and an icing porosity measuring method. Wherein one kind freezes the measuring device of porosity, including laser instrument, refrigeration platform, optical power meter and calculation module, the refrigeration platform is used for placing the icing that awaits measuring, the relative both sides of refrigeration platform set up laser instrument and optical power meter respectively, the calculation module is connected to the optical power meter, calculation module utilizes laser power
Thickness of ice formation
And optical power
Calculating to obtain the porosity of the ice to be detected
. The invention does not need to place ice in water for measurement, and improves the accuracy of measuring the power of the ice-forming light, thereby achieving the purpose of improving the accuracy of the obtained ice porosity.
Description
Technical Field
The invention belongs to the field of icing wind tunnel tests, and particularly relates to an icing porosity measuring device and an icing porosity measuring method.
Background
When an airplane flies at a temperature lower than the freezing point, if a cloud layer containing supercooled water drops (the supercooled water drops refer to water drops with the temperature lower than the freezing point but still in a liquid state) is encountered, the water drops in the cloud layer impact the surface of the airplane, an icing phenomenon occurs in a collision area and the vicinity of the collision area, the icing phenomenon can cause the pneumatic performance of the airplane to be deteriorated, the power of an engine to be reduced, the ice falls off, the internal mechanical damage of the engine can be caused, even the whole engine is damaged, and finally, accidents which seriously threaten the flight safety and are caused by insufficient pneumatic stability of the engine, automatic flameout in the air and the like occur. Therefore, aircraft icing has been a hot problem in the field of aerodynamics.
The icing porosity is related to the icing strength, and in the numerical simulation of the aircraft icing prediction, the icing porosity directly determines the growth appearance of the aircraft, and is a key intermediate physical quantity for accurate icing prediction; in the anti-icing/deicing design, the icing porosity influences the deicing heat, and the quantitative information of the icing porosity is expected to be accurately acquired in the design so as to optimize the anti-icing/deicing system.
The existing method for obtaining the porosity of the ice is as follows: the density of ice needs to be tested firstly, and then the porosity of the ice is obtained, and the test of the ice density is mainly realized by adopting a densimeter.
When a densitometer is used for testing the density of ice, the ice needs to be soaked in a solution, and the ice can melt and even break during the testing process, so that the error of the measurement result is large.
Disclosure of Invention
In order to overcome the defect of the error of the freezing porosity obtained in the prior art, the invention provides the device and the method for measuring the freezing porosity. According to the icing porosity measuring method provided by the invention, the icing porosity obtained by the method has higher accuracy.
The invention is realized by the following technical scheme:
the invention provides an icing porosity measuring device which comprises a laser, a refrigerating table, an optical power meter and a calculating module, wherein the refrigerating table is used for placing icing to be measured, the laser and the optical power meter are respectively arranged on two opposite sides of the refrigerating table, the optical power meter is connected with the calculating module, and the calculating module utilizes the laser power to measure the icing porosity
Thickness of ice formation
And optical power
Calculating to obtain the porosity of the ice to be detected
。
According to the measuring device provided by the invention, the ice to be measured does not need to be placed in water for measurement, and the condition that the ice to be measured is melted or cracked in the measuring process is ensured by the refrigerating table with the refrigerating function, so that the defect that the ice to be measured is melted and cracked when placed in water is overcome; the resulting frozen porosity is provided with greater accuracy.
Further, a fine adjustment platform is connected below the refrigerating table and used for adjusting the position of the refrigerating table. The refrigeration platform can be directly adjusted through the fine adjustment platform in multiple measurements of the ice to be measured, so that the position of the ice to be measured can be adjusted, and the adjustment of the position of the ice to be measured through the fine adjustment platform is more convenient and simpler, and is beneficial to manual operation; meanwhile, the fine adjustment platform is utilized to adjust the position of the ice to be measured with high accuracy, so that the measured porosity is ensured
High precision.
Further, refrigeration platform is including putting ice platform and refrigeration piece, refrigeration piece is connected put the ice platform.
Further, the refrigeration piece is arranged on the upper surface of the ice placing platform. When the ice to be detected is placed on the ice placing table, the ice to be detected can be directly contacted with the refrigerating piece, and the refrigerating effect of the refrigerating piece on the ice to be detected is better; meanwhile, the effect of saving energy can be achieved, and the cost is saved.
Further, still include the collimater, the collimater sets up between laser instrument and refrigeration platform. The collimator collimates the laser emitted by the laser and then emits the laser onto the ice to be detected.
The invention also provides an icing porosity measuring method based on the icing porosity measuring device, which comprises the following steps of:
s100: arranging a measurement device of icing porosity;
s200: measuring the thickness of ice to be measured
Measuring the laser power emitted by the laser
(ii) a Or placing the ice to be detected on a refrigerating table and measuring the optical power of the laser passing through different positions of the ice to be detected
；
S300: placing the ice to be detected on a refrigeration platform and measuring the optical power of the laser passing through different positions of the ice to be detected
(ii) a Or measuring the thickness of ice to be measured
Measuring the laser power emitted by the laser
；
S400: calculation model of calculation module using laser power
Thickness of ice formation
And optical power
Calculating to obtain the porosity of the ice to be detected
；
Wherein:
，
indicating the number of measurements of the laser light passing through the ice to be measured.
Further, the calculation model is:
wherein:
。
the icing porosity measuring method of the invention is used for measuring the thickness of icing to be measured
Only the measurement needs to be carried out by the existing length measuring tool, such as: the vernier caliper, the ruler and the like have the advantages of simple measuring mode, small measuring difficulty and accurate measuring result; in measuring the power of the laser passing through the ice to be measured
In the time, only need to set up laser instrument and optical power meter and just can realize measuring, have that measuring mode is simple, the measurement degree of difficulty is little, the accurate advantage of measuring result.
By adopting the technical scheme, the invention has the following advantages:
1. the freezing porosity measuring device is simple in structure, low in material consumption, simple to operate and low in cost.
2. The icing porosity measuring method of the invention is used for measuring the thickness
And power
The measurement is very simple, the time consumption is short, and the method has the advantages of simple operation and high efficiency.
3. The method for obtaining the porosity of the ice adopts a new method completely different from the prior art, and the obtained porosity has higher precision than the porosity obtained by the prior art.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of an icing porosity measurement apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an icing porosity measurement apparatus according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method of ice porosity measurement according to an embodiment of the present invention;
FIG. 4 is a schematic front view of an icing porosity measurement apparatus according to an embodiment of the invention;
FIG. 5 is a schematic top view of an ice porosity measurement apparatus according to an embodiment of the present invention;
in the drawings: 1. the device comprises a laser 2, an icing to be detected 21, a refrigerating table 23, an optical power meter 4 and a fine adjustment platform 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the embodiment provides an icing porosity measuring device, which includes a laser 1, a refrigeration table 3, an optical power meter 4 and a calculation module, where the refrigeration table 3 is used to place an icing 2 to be measured, and two opposite sides of the refrigeration table 3 are respectively provided with the laser 1 and the optical power meter 4, it should be understood that the refrigeration table 3 is located between the laser 1 and the optical power meter 4, and laser emitted by the laser 1 can be received by the optical power meter 4 after passing through the icing 2 to be measured on the refrigeration table 3; the optical power meter 4 is connected with a calculation module which utilizes laser power
Thickness of ice formation
And optical power
Calculating to obtain the porosity of the ice to be detected
。
According to the measuring device provided by the invention, the ice to be measured does not need to be placed in water for measurement, and the condition that the ice to be measured is melted or cracked in the measuring process is ensured by the refrigerating table with the refrigerating function, so that the defect that the ice to be measured is melted and cracked when placed in water is overcome; the resulting frozen porosity is provided with greater accuracy.
It should be noted that, the laser 1 and the optical power meter 4 are both prior art, and can be purchased and used directly; the detailed description of the specific model parameters of the laser 1 and the optical power meter 4 is omitted in this embodiment.
It should be noted that the computing module may be a mobile terminal, such as a computer, and a computing model needs to be set in the computer before use; measuring the thickness of ice 2 to be measured
Then, the thickness is measured
Inputting a calculation model, placing the ice 2 to be detected on the refrigerating table 3 after the preparation is finished, or directly placing the ice 2 to be detected on the refrigerating table 3 and then measuring the thickness of the ice 2 to be detected
The measurement is performed.
Further, as shown in fig. 2, a fine adjustment platform 5 is connected below the refrigeration table 3, and the fine adjustment platform 5 is used for adjusting the position of the refrigeration table 3. The refrigerating table 3 can be directly adjusted through the fine adjustment platform 5 in multiple measurements of the ice 2 to be measured, so that the position of the ice 2 to be measured can be adjusted, and the adjustment of the position of the ice 2 to be measured through the fine adjustment platform 5 is more convenient and simpler and is beneficial to manual operation; meanwhile, the position of the icing 2 to be measured is adjusted with high accuracy by utilizing the fine adjustment platform 5, so that the measured porosity is high
High precision. If the freezing platform 2 to be measured is moved under the condition that the fine adjustment platform is not used, the freezing platform 2 to be measured can be manually moved, and the refrigerating platform 3 can also be manually moved, but the moving modes have the defect of insufficient adjusting accuracy, and a large amount of time is consumed to ensure the adjusting accuracy in the moving modes, so that the time is wasted.
It should be noted that the fine adjustment platform 5 may be an XYZ axis fine adjustment platform, and it is required to ensure an X axis of the XYZ axis fine adjustment platformThe adjustment or Y-axis adjustment is vertical to the connecting line of the laser 1 and the optical power meter 4; if the X axis of the XYZ axis fine tuning platform is vertical to the connecting line of the laser 1 and the optical power meter 4, the X axis or the Z axis of the XYZ axis fine tuning platform is adjusted after the icing 2 to be measured is measured once, and the power passing through the icing 2 to be measured once is measured after each adjustment
。
The XYZ axis fine adjustment platform can be purchased and used directly, but the icing to be measured 2 only needs to be adjusted in 4 directions: as shown in fig. 4, adjusted up and down; as shown in fig. 5, is adjusted left and right with respect to the line connecting the laser 1 and the optical power meter 4.
The icing 2 to be measured simulates the icing of an airplane, and the bubbles in the icing 2 to be measured are not uniformly distributed, so that the power of the icing 2 to be measured passing through different positions needs to be measured, and the porosity is calculated by the average value of the power of the icing 2 to be measured for multiple times
。
Further, refrigeration platform 3 is including putting ice platform and refrigeration piece, refrigeration piece is connected put the ice platform. It should be noted that the ice placing table and the refrigerating piece can be purchased and used directly, wherein the refrigerating piece can be a semiconductor refrigerating piece.
Further, the refrigeration piece is arranged on the upper surface of the ice placing platform. When the ice to be detected is placed on the ice placing table, the ice to be detected can be in direct contact with the refrigerating piece, and the refrigerating piece has a better refrigerating effect on the ice to be detected; meanwhile, the effect of saving energy can be achieved, and the cost is saved.
Further, still include the collimater, the collimater sets up between laser instrument and refrigeration platform. The collimator collimates the laser emitted by the laser and then emits the laser onto the ice to be detected.
It should be noted that the collimator can be purchased and used directly, and the specific model parameters are not described in detail.
As shown in fig. 3, the present embodiment further provides another aspect of the present invention to provide an icing porosity measuring method, based on the icing porosity measuring apparatus, including the following steps:
s100: arranging a measurement device of icing porosity;
s200: measuring the thickness of ice 2 to be measured
Measuring the laser power emitted by the laser
(ii) a Or placing the ice 2 to be detected on a refrigerating table and measuring the optical power of the laser passing through different positions of the ice 2 to be detected
(ii) a It is noted that the optical power
Thickness of the film
Laser power
The order of measurement of (a) is not limited, and any order of measurement should be included in the present invention;
s300: placing the ice 2 to be detected on a refrigerating table and measuring the optical power of the laser passing through different positions of the ice 2 to be detected
(ii) a Or measuring the thickness of the ice 2 to be measured
Measuring the laser power emitted by the laser
；
It is noted that the object of the invention is to obtain the porosity of the ice 2 to be measured,the icing 2 to be measured simulates the flight icing of an airplane, and the bubbles in the icing 2 to be measured are not uniformly distributed, so that the optical power of laser passing through different positions of the icing to be measured needs to be measured
. In the invention, the optical power of the icing 2 to be measured is measured
And thickness of ice formation
The icing 2 to be measured has to be polished to measure the optical power
The thickness of the icing 2 to be detected, which is penetrated by the laser each time, is consistent (namely the laser incident surface 21 and the laser emergent surface 22 of the icing 2 to be detected are parallel);
measuring the optical power of the laser passing through different positions of the ice 2 to be measured
The specific operation of the method is as follows:
firstly, the ice 2 to be detected is placed on a refrigerating table 3 (the laser is required to be ensured to be vertical to both an incident surface 21 and an emergent surface 22 of the ice 2 to be detected), a laser 1 is turned on to emit laser, and an optical power meter measures optical power
Moving the icing 2 to be detected (ensuring the laser to be vertical to the incident surface 21 and the emergent surface 22 of the icing 2 to be detected), and measuring the secondary optical power
Measuring multiple optical powers repeatedly
；
S400: computing model utilization of computing modulesOptical power
Thickness of ice formation
And optical power
Calculating to obtain the porosity of the ice to be detected
；
Wherein:
，
indicating the number of measurements of the laser light passing through the ice to be measured.
Further, the calculation model is:
wherein:
。
average optical power
Comprises the following steps: the optical power of the laser light passing through the ice to be detected
、
、
、...、
Is subjected to normalization processing to obtain
、
、
、...、
To, for
、
、
、...、
Averaging to obtain average optical power
。
It should be noted that the calculation of the calculation module may be automatic calculation or manual operation; if the calculation module is a computer, if automatic calculation is needed, a calculation model needs to be preset in the calculation module, and the laser power is increased
Optical power
And thickness of ice formation
And directly finishing the calculation after input.
It should be noted that, in the invention, the thickness measurement of the icing 2 to be measured is only completed before the calculation of the calculation module.
According to the icing porosity measuring method, when the thickness of the icing 2 to be measured is measured, only the existing length measuring tool is needed to measure, such as: the vernier caliper, the ruler and the like have the advantages of simple measuring mode, small measuring difficulty and accurate measuring result; when the power of the laser passing through the icing 2 to be measured is measured, the measurement can be realized only by arranging the laser 1 and the optical power meter 4, and the method has the advantages of simple measurement mode, small measurement difficulty and accurate measurement result.
In the method for measuring the freezing porosity, the method for measuring the power is simple, the method for measuring the thickness is simple, the method for calculating the porosity is simple, and the whole method is simple in flow operation; has the advantages of short time consumption and high efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. An icing porosity measurement device, characterized by: including laser instrument, refrigeration platform, optical power meter and calculation module, the refrigeration platform is used for placing and awaits measuring icing, the relative both sides of refrigeration platform set up laser instrument and optical power meter respectively, the laser of laser instrument transmission can be received by the optical power meter after passing the awaiting measuring icing that is located on the refrigeration platform, the calculation module is connected to the optical power meter, the calculation module utilizes the laser power of laser instrument transmission
Thickness of ice formation
And the optical power measured by the optical power meter
Calculating to obtain the porosity of the ice to be detected
；
The calculation model of the calculation module is as follows:
wherein:
，
，
indicating the number of measurements of the laser light passing through the ice to be measured,
indicating measured by an optical power meter
The second pass is the optical power of the ice to be measured.
2. An ice porosity measurement device according to claim 1, wherein: the refrigeration platform is connected with a fine adjustment platform below, and the fine adjustment platform is used for adjusting the position of the refrigeration platform.
3. An icing porosity measuring device as claimed in claim 1 or 2, wherein: the refrigeration platform is including putting ice platform and refrigeration piece, refrigeration piece is connected put the ice platform.
4. An ice porosity measurement device according to claim 3, wherein: the refrigerating piece is arranged on the upper surface of the ice placing table.
5. An ice porosity measurement device according to claim 1, wherein: still include the collimater, the collimater sets up between laser instrument and refrigeration platform.
6. An icing porosity measuring method based on the icing porosity measuring device according to any one of claims 1 to 5, characterized by comprising the steps of:
s100: arranging a measuring device of icing porosity;
s200: measuring the thickness of ice to be measured
And measuring the laser power emitted by the laser
；
S300: placing the ice to be detected on a refrigerating platform and measuring the optical power of the laser passing through different positions of the ice to be detected by using an optical power meter
；
S400: calculation model of calculation module using laser power
Thickness of ice formation
And optical power
Calculating to obtain the ice to be detectedPorosity of (2)
；
The calculation model is as follows:
wherein:
，
，
indicating the number of measurements of the laser light passing through the ice to be measured,
indicating measured by an optical power meter
The second pass is the optical power of the ice to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210221236.2A CN114295532B (en) | 2022-03-09 | 2022-03-09 | Icing porosity measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210221236.2A CN114295532B (en) | 2022-03-09 | 2022-03-09 | Icing porosity measuring device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114295532A CN114295532A (en) | 2022-04-08 |
| CN114295532B true CN114295532B (en) | 2022-06-03 |
Family
ID=80978686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210221236.2A Active CN114295532B (en) | 2022-03-09 | 2022-03-09 | Icing porosity measuring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114295532B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2602564A1 (en) * | 2009-03-27 | 2013-06-12 | Mitsubishi Electric Corporation | Electrostatic atomizing apparatus, appliance, air conditioner, and refrigerator |
| CN104597033A (en) * | 2015-02-02 | 2015-05-06 | 俞国林 | Equipment for detecting nickel sulfide explosive object in glass by virtue of Raman spectra |
| US9068890B2 (en) * | 2013-09-18 | 2015-06-30 | Dmitry Maznichenko | Three-dimensional titania nano-fibrous architecture for molecular detection by Raman spectroscopy |
| CN105004630A (en) * | 2015-06-10 | 2015-10-28 | 国家电网公司 | Method for measuring power grid icing volume density and porosity |
| CN107014728A (en) * | 2016-01-27 | 2017-08-04 | 中国石油化工股份有限公司 | A kind of hole measuring method |
| CN209432282U (en) * | 2019-01-23 | 2019-09-24 | 无锡厦泰生物科技有限公司 | A kind of laser power test macro |
| CN110890862A (en) * | 2019-12-04 | 2020-03-17 | 孙倩兰 | Solar photovoltaic auxiliary device capable of automatically removing ice and snow according to gravity change |
| JP2020085751A (en) * | 2018-11-29 | 2020-06-04 | ラトックシステムエンジニアリング株式会社 | Method, device, and program for evaluating structure of porous body |
| CN111952819A (en) * | 2020-08-20 | 2020-11-17 | 国网湖南省电力有限公司 | Deicing laser wavelength optimization selection method and system |
| CN114076727A (en) * | 2022-01-10 | 2022-02-22 | 中国空气动力研究与发展中心低速空气动力研究所 | Resistivity-based ice porosity measurement method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2322140Y (en) * | 1997-08-27 | 1999-06-02 | 中国科学院兰州冰川冻土研究所 | Device for investigating ice physical parameter |
| WO2011003033A1 (en) * | 2009-07-01 | 2011-01-06 | Energ2, Inc. | Ultrapure synthetic carbon materials |
| RU2482465C1 (en) * | 2011-11-29 | 2013-05-20 | Шлюмберже Текнолоджи Б.В. | Frozen rock specimen investigation method |
| GB201209415D0 (en) * | 2012-05-28 | 2012-07-11 | Renishaw Plc | Manufacture of metal articles |
| US10624865B2 (en) * | 2013-03-14 | 2020-04-21 | Pathak Holdings Llc | Methods, compositions, and devices for drug/live cell microarrays |
| US10429511B2 (en) * | 2017-05-04 | 2019-10-01 | The Boeing Company | Light detection and ranging (LIDAR) ice detection system |
| TWI716205B (en) * | 2019-11-28 | 2021-01-11 | 財團法人工業技術研究院 | Power measuring protection method and laser protection system |
| CN111473946A (en) * | 2020-05-07 | 2020-07-31 | 中国空气动力研究与发展中心低速空气动力研究所 | Three-dimensional ice shape online measuring device and method for icing wind tunnel test |
| FR3113032A1 (en) * | 2020-07-31 | 2022-02-04 | Safran Aerosystems | Device for detecting the intensity of icing for an aircraft in flight |
-
2022
- 2022-03-09 CN CN202210221236.2A patent/CN114295532B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2602564A1 (en) * | 2009-03-27 | 2013-06-12 | Mitsubishi Electric Corporation | Electrostatic atomizing apparatus, appliance, air conditioner, and refrigerator |
| US9068890B2 (en) * | 2013-09-18 | 2015-06-30 | Dmitry Maznichenko | Three-dimensional titania nano-fibrous architecture for molecular detection by Raman spectroscopy |
| CN104597033A (en) * | 2015-02-02 | 2015-05-06 | 俞国林 | Equipment for detecting nickel sulfide explosive object in glass by virtue of Raman spectra |
| CN105004630A (en) * | 2015-06-10 | 2015-10-28 | 国家电网公司 | Method for measuring power grid icing volume density and porosity |
| CN107014728A (en) * | 2016-01-27 | 2017-08-04 | 中国石油化工股份有限公司 | A kind of hole measuring method |
| JP2020085751A (en) * | 2018-11-29 | 2020-06-04 | ラトックシステムエンジニアリング株式会社 | Method, device, and program for evaluating structure of porous body |
| CN209432282U (en) * | 2019-01-23 | 2019-09-24 | 无锡厦泰生物科技有限公司 | A kind of laser power test macro |
| CN110890862A (en) * | 2019-12-04 | 2020-03-17 | 孙倩兰 | Solar photovoltaic auxiliary device capable of automatically removing ice and snow according to gravity change |
| CN111952819A (en) * | 2020-08-20 | 2020-11-17 | 国网湖南省电力有限公司 | Deicing laser wavelength optimization selection method and system |
| CN114076727A (en) * | 2022-01-10 | 2022-02-22 | 中国空气动力研究与发展中心低速空气动力研究所 | Resistivity-based ice porosity measurement method |
Non-Patent Citations (3)
| Title |
|---|
| "Estimation of the uniaxial compressive strength of Arctic sea ice during melt season";Qingkai Wang 等;《Cold Regions Science and Technology》;20180731;第151卷;第9-18页 * |
| "动态结冰孔隙结构三维建模方法";李伟斌 等;《化工学报》;20201231;第71卷(第3期);第1009-1017页 * |
| "大功率半导体激光除冰技术";赵宇明 等;《南方电网技术》;20111231;第5卷(第5期);第60-64页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114295532A (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kind et al. | Experimental and computational simulation of in-flight icing phenomena | |
| CN111307406B (en) | Icing wind tunnel liquid water content measuring method | |
| US11161629B2 (en) | System for numerical simulation and test verification of icing characteristics of an aerostat | |
| CN109653966B (en) | Test method for preventing and removing ice of wind turbine wing panel | |
| CN110702419B (en) | Anti-icing conformance test system and method for engine air inlet system | |
| CN114295532B (en) | Icing porosity measuring device and method | |
| CN107677444A (en) | A kind of method for measuring icing tunnel cloud and mist uniformity | |
| EP1545972B1 (en) | A method of determining the risk of ice deposition due to precipitation and apparatus for exercising the method | |
| CN112197721B (en) | Water film thickness measuring method | |
| CN114154353B (en) | Optical fiber icing detection sensor data reconstruction method, system and storage medium | |
| CN113901591B (en) | Hot wire unit dry power calculation method and liquid water content calculation method | |
| CN112729762B (en) | Method for measuring uniformity of icing grid and cloud and mist field | |
| CN113295124B (en) | Coating thickness detection method and coating thickness detection device | |
| CN114578020A (en) | Method for calculating unfrozen water content of just-frozen soil body based on soil body microstructure | |
| CN114076727B (en) | Resistivity-based ice porosity measurement method | |
| CN106018460B (en) | A kind of measuring device and method for rapid survey drop condensation point | |
| CN115270068B (en) | Method for quickly estimating atmospheric moisture delay of offshore inclined path based on buoy platform | |
| Anderson et al. | Evaluation and validation of the messinger freezing fraction | |
| CN111319789B (en) | Full-size propeller blade icing wind tunnel test method | |
| Miyauchi et al. | Photogrammetric Frost Roughness Measurements in Cold-Soaked Conditions | |
| CN114153249B (en) | High-precision optical fiber icing sensor, system and method | |
| CN112729147A (en) | Blade strain measurement test system and method under complex environment | |
| CN114754971B (en) | Method and device for testing height of anhydrous shielding area | |
| US2749623A (en) | La barre | |
| Hervy | New SLD Icing Capabilities at DGA Aero-E ngine Testing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |