CN102967724A - Method for measuring wind speed and wind direction - Google Patents
Method for measuring wind speed and wind direction Download PDFInfo
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- CN102967724A CN102967724A CN2012105324258A CN201210532425A CN102967724A CN 102967724 A CN102967724 A CN 102967724A CN 2012105324258 A CN2012105324258 A CN 2012105324258A CN 201210532425 A CN201210532425 A CN 201210532425A CN 102967724 A CN102967724 A CN 102967724A
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Abstract
The invention discloses a method for measuring wind speed and wind direction, and according to the method, a wind power reception device is used. The method comprises the steps of mounting sensors, acquiring data, converting the data into vector force, computing vector resultant force, converting the vector resultant force into wind power and wind direction, and storing the wind power and the wind direction for display. A windward loaded body of the wind power reception device is in a bluff body structure without a critical Reynolds region defined in aerodynamics. The sensors which are arranged on a deformation rod that is arranged on the wind power reception device and connected with the bluff body structure according to a designed position are tensile strain sheets and pressure strain sheets; the place is a rectangular cross section; and the tensile strain sheets and the pressure strain sheets are arranged on each surface in pairs. The bluff body structure is formed by two vertical plates which are vertical to each other. In the step of computing the vector resultant force, the vector force converted by the tensile strain sheets and the vector force converted by the opposite pressure strain sheets are superposed. The method has the advantages of being scientific and reasonable, solving the technical difficulty of the critical Reynolds region and being correct and reliable in measurement precision.
Description
Technical field
The present invention relates to a kind of method of measuring wind wind direction.
Background technology
Anemometer mainly is divided into mechanical type and on-mechanical formula two classes on the market at present.Mechanical type mainly comprises wind-cup type and propeller type, and since in the routine use mechanical friction and sandstone cause its serviceable life not high to the effect that impacts of rotatable parts.Particularly under low temperature freezes situation, in historical rare sleet and snow ice weather in 2008, disaster-stricken province a large amount of mechanical type anemometer weathervane, vane are frozen in and can not rotate, and cause anemometer malfunctioning.The on-mechanical formula mainly comprises hot type (hot line, hot-bulb) and ultrasound wave two classes.Its probe stream field of hot type anemometer has certain disturbance, also have the hot line easy fracture, need the shortcomings such as periodic maintenance and calibration, so it uses also relatively limitation.Although adopt ultrasound wind measuring accuracy higher, price is expensive, and has relatively high expectations in the installation site.And also do not see on the market based on the anemometer of dynamometry mode.
The correlative study that cylinder and ball are surveyed wind speed and direction has the people carrying out, but cylinder and ball can run into the aerodynamics problem when the measuring wind wind direction.Cylinder and ball circumferential motion problem Chinese scholars early have research, at Reynolds number about 3 * 10
5The time, its resistance coefficient has a precipitate zone, is called critical Reynolds district, and it is namely suffered that to make a concerted effort with wind speed be not monotonic relationshi completely, and in critical Reynolds district, the suffered aerodynamic force of wind speed and cylinder and ball is not one to one.And the factor analysis such as the size of critical Reynolds number and incoming flow turbulivity, cylinder ball surfaceness change.When reynolds number Re hour, its boundary layer, windward side is laminar flow, the stalling point position is forward, about 85 ° of windward sides, lee face Disengagement zone area is large, pressure is low.Along with Re improves, reach critical Reynolds number after, the windward side boundary-layer flow is twisted separating forward, is separated into turbulence separation.Turbulent flow is because the ectonexine energy exchange is strong, and it is strong to keep the jet attached flow ability, thus the burble point position move after to 100 ° of lee faces, lee face pressure is to a certain degree recovered, and the Disengagement zone area dwindles greatly, so the resistance coefficient resistance coefficient is die-offed.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of suitable environment wide, measurement result is the method for reliable measuring wind wind direction more accurately.
Purpose of the present invention is achieved by following technical proposals: adopt the wind-force receiving trap, the key step of described method comprises sensor installation, image data, becomes vectorial force, compute vectors to make a concerted effort, vector is made a concerted effort to convert to wind direction and stored demonstration data-switching; The beaer that facings the wind of described wind-force receiving trap is the bluff body structure, and there is not defined critical Reynolds district in the aerodynamics in this bluff body structure.
The sensor that install the position of determining according to design on described wind-force receiving trap and the deformed rod that the bluff body structure is connected is tensile strain sheet and pressure-strain sheet, and the xsect at this place is rectangle, arranges in pairs tensile strain sheet and pressure-strain sheet on each face.
Described bluff body structure is two mutual vertically arranged risers.
In the step that described compute vectors is made a concerted effort, the vectorial force that the pressure-strain sheet on the vectorial force that the tensile strain sheet changes into out and this tensile strain sheet opposite changes into out superposes mutually.
Compared with prior art, the present invention has the following advantages: methodological science is reasonable, has solved the technical barrier of the art, has overcome the technical barrier in critical Reynolds district, so that measuring accuracy is more precisely reliable.
Description of drawings
Fig. 1 is that method of the present invention adopts bluff body dull and stereotyped suffered with joint efforts with the wind speed change curve;
Fig. 2 is that background technology cylinder and ball are suffered with joint efforts with the wind speed change curve.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Adopt the wind-force receiving trap, the key step of described method comprises sensor installation, image data, becomes vectorial force, compute vectors to make a concerted effort, vector is made a concerted effort to convert to wind direction and stored demonstration data-switching; The beaer that facings the wind of described wind-force receiving trap is the bluff body structure, and there is not defined critical Reynolds district in the aerodynamics in this bluff body structure.
The sensor that install the position of determining according to design on described wind-force receiving trap and the deformed rod that the bluff body structure is connected is tensile strain sheet and pressure-strain sheet, and the xsect at this place is rectangle, arranges in pairs tensile strain sheet and pressure-strain sheet on each face.
Described bluff body structure is two mutual vertically arranged risers.
In the step that described compute vectors is made a concerted effort, the vectorial force that the pressure-strain sheet on the vectorial force that the tensile strain sheet changes into out and this tensile strain sheet opposite changes into out superposes mutually.
With reference to figure 1, the beaer that facings the wind of the wind-force receiving trap that adopts in the method for the present invention is the bluff body structure, and be two mutual vertically arranged risers, riser is followed bluff body and is streamed rule in wind tunnel test, that is: when air flow stream is crossed riser, air-flow must separate at the riser edge, does not have the problem in critical Reynolds district.As can see from Figure 1, its trend is dull, and riser is suffered to be one-to-one relationship with wind speed with joint efforts, therefore can carry out measuring wind speed under the wind speed arbitrarily.The wind-force receiving trap adopts mutually vertically arranged two risers, can detect the wind-force size of arbitrary orientation.
With reference to figure 2, when the wind-force receiving trap adopts cylinder and ball, be about 3 * 10 at Reynolds number
5The time, its resistance coefficient has a precipitate zone, is called critical Reynolds district, and in critical Reynolds district, the suffered aerodynamic force of wind speed and cylinder and ball is not one to one.And the factor analysis such as the size of critical Reynolds number and incoming flow turbulivity, cylinder ball surfaceness change.
Embodiment:
One, device:
The beaer that facings the wind of wind-force receiving trap connects deformed rod for adopting the mutually bluff body structure of vertically arranged two risers composition on the bluff body structure, the position of deformed rod sensor installation is square cross section, adopts hollow-core construction.When the wind-force receiving trap was installed, any vertical center line of the rectangular cross section at the position of deformed rod sensor installation was arranged according to the north-south.
Two. step:
1, sensor installation: tensile strain sheet and pressure-strain sheet are installed in the position of determining according to design on deformed rod, and the xsect at this place is rectangle, arrange in pairs tensile strain sheet and pressure-strain sheet on each face.
2, image data: known method and technology.
3, data-switching is become vectorial force: known method and technology.
4, compute vectors is made a concerted effort: the vectorial force that the vectorial force that the tensile strain sheet changes into out and its opposite pressure-strain sheet change into out superposes mutually, all adopts known method and technology.
5, vector is made a concerted effort to convert to wind direction: known method and technology.
6, store demonstration: known method and technology.The data that store are for future reference.
Theoretically, any vertical center line of the rectangular cross section at the position of deformed rod sensor installation is arranged according to the north-south, just can determine in advance a coordinate relation corresponding with the earth, calculates the vector that obtains and makes a concerted effort, not only have size, and have direction.The direction that vector is made a concerted effort is consistent with direction, and there is certain relation in the size of the size that vector is made a concerted effort and wind-force, according to this relation, lists relational expression, just can calculate the size of air-out.
Claims (4)
1. the method for a measuring wind wind direction adopts the wind-force receiving trap, and the key step of described method comprises sensor installation, image data, becomes vectorial force, compute vectors to make a concerted effort, vector is made a concerted effort to convert to wind direction and stored demonstration data-switching; It is characterized in that: the beaer that facings the wind of described wind-force receiving trap is the bluff body structure, and there is not defined critical Reynolds district in the aerodynamics in this bluff body structure.
2. method according to claim 1, it is characterized in that: the sensor that install the position of determining according to design on described wind-force receiving trap and the deformed rod that the bluff body structure is connected is tensile strain sheet and pressure-strain sheet, the xsect at this place is rectangle, arranges in pairs tensile strain sheet and pressure-strain sheet on each face.
3. method according to claim 1 and 2, it is characterized in that: described bluff body structure is two mutual vertically arranged risers.
4. method according to claim 2, it is characterized in that: in the step that described compute vectors is made a concerted effort, the vectorial force that the pressure-strain sheet on the vectorial force that the tensile strain sheet changes into out and this tensile strain sheet opposite changes into out superposes mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105324258A CN102967724A (en) | 2012-12-12 | 2012-12-12 | Method for measuring wind speed and wind direction |
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| CN2012105324258A CN102967724A (en) | 2012-12-12 | 2012-12-12 | Method for measuring wind speed and wind direction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217548A (en) * | 2013-03-25 | 2013-07-24 | 中南大学 | Vortex street anemograph |
| CN103675329A (en) * | 2013-12-11 | 2014-03-26 | 苏州市峰之火数码科技有限公司 | Pressure intensity sensing type wind power monitor |
| CN109241688A (en) * | 2018-11-09 | 2019-01-18 | 石家庄铁道大学 | A kind of determination method, system and the terminal device of suspension cable aerodynamic drag |
| CN110440745A (en) * | 2019-08-14 | 2019-11-12 | 中铁西南科学研究院有限公司 | A kind of deformation detecting method of lining cutting, device and storage medium |
| CN114675054A (en) * | 2022-02-23 | 2022-06-28 | 明阳智慧能源集团股份公司 | Wind direction identification method and system based on tower footing load of wind generating set |
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| JP2006064444A (en) * | 2004-08-25 | 2006-03-09 | Jfe Steel Kk | Method of measuring flow velocity of molten metal |
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| JPH01140168U (en) * | 1988-03-18 | 1989-09-26 | ||
| JPH0727781A (en) * | 1993-07-14 | 1995-01-31 | Sony Corp | Detector of flow velocity and flow direction of fluid |
| JP2006064444A (en) * | 2004-08-25 | 2006-03-09 | Jfe Steel Kk | Method of measuring flow velocity of molten metal |
| CN101587130A (en) * | 2008-05-21 | 2009-11-25 | 中国科学院电子学研究所 | A kind of miniature wind detection unit crossed and encapsulated type wind speed wind transducer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217548A (en) * | 2013-03-25 | 2013-07-24 | 中南大学 | Vortex street anemograph |
| CN103675329A (en) * | 2013-12-11 | 2014-03-26 | 苏州市峰之火数码科技有限公司 | Pressure intensity sensing type wind power monitor |
| CN109241688A (en) * | 2018-11-09 | 2019-01-18 | 石家庄铁道大学 | A kind of determination method, system and the terminal device of suspension cable aerodynamic drag |
| CN110440745A (en) * | 2019-08-14 | 2019-11-12 | 中铁西南科学研究院有限公司 | A kind of deformation detecting method of lining cutting, device and storage medium |
| CN110440745B (en) * | 2019-08-14 | 2021-07-23 | 中铁西南科学研究院有限公司 | Lining deformation detection method and device and storage medium |
| CN114675054A (en) * | 2022-02-23 | 2022-06-28 | 明阳智慧能源集团股份公司 | Wind direction identification method and system based on tower footing load of wind generating set |
| CN114675054B (en) * | 2022-02-23 | 2023-12-22 | 明阳智慧能源集团股份公司 | Wind direction identification method and system based on tower foundation load of wind generating set |
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Application publication date: 20130313 |