JPH09218127A - Wind tunnel test device for wind direction fluctuation - Google Patents
Wind tunnel test device for wind direction fluctuationInfo
- Publication number
- JPH09218127A JPH09218127A JP2786596A JP2786596A JPH09218127A JP H09218127 A JPH09218127 A JP H09218127A JP 2786596 A JP2786596 A JP 2786596A JP 2786596 A JP2786596 A JP 2786596A JP H09218127 A JPH09218127 A JP H09218127A
- Authority
- JP
- Japan
- Prior art keywords
- wind
- wind tunnel
- wind direction
- fluctuation
- direction fluctuation
- 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.)
- Withdrawn
Links
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、環境アセスメント
のために実施される排ガス拡散風洞実験等において、供
試模型が設置された風洞測定部に、環境アセスメント等
を行う場所の大気と相似な風向変動を再現するための風
向変動風洞実験装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas diffusion wind tunnel experiment or the like carried out for an environmental assessment, in which the wind direction similar to the atmosphere at the place where the environmental assessment is performed is performed in the wind tunnel measuring section in which the test model is installed. The present invention relates to a wind direction fluctuation wind tunnel experimental device for reproducing fluctuations.
【0002】[0002]
【従来の技術】排ガス拡散風洞実験等において、実験を
行う煙突模型等が設置された風洞測定部に、模擬された
煙突等を実際に建設する場所(以下,現地という)にお
ける風向変動と相似な風向変動を再現する風向変動風洞
実験装置として、図3に示すものが従来から使用されて
いる。2. Description of the Related Art In an exhaust gas diffusion wind tunnel experiment or the like, a wind direction change at a place where a simulated chimney or the like is actually constructed (hereinafter referred to as a site) is similar to a wind tunnel measurement section in which a chimney model or the like for performing the experiment is installed. As a wind direction fluctuation wind tunnel experiment device that reproduces the wind direction fluctuation, the one shown in FIG. 3 has been conventionally used.
【0003】図に示すように、送風機等の気流発生装置
を具え、風洞軸の軸心方向に流れる気流を内部に発生さ
せる風洞の途中には、煙突模型05を設置する風洞測定
部01が設けられている。この風洞測定部01の上流側
には、流れに直角な方向に複数本列設した回転軸02が
直立させて設けられ、この回転軸02のそれぞれには、
2〜4枚の鉛直振動板04が外周面に取付けられてい
る。また、この回転軸02は、測定部01の床下に設け
たパルス・モータなどの回転装置03で鉛直軸周りに正
逆方向に回動させられ、この回転軸02の回動により、
鉛直振動板04が水平方向に揺動し、整流されて一様な
流れとして、測定部01に流入した気流07の風向変動
を起こさせるようにしている。As shown in the figure, a wind tunnel measuring section 01 for installing a chimney model 05 is provided in the middle of a wind tunnel which has an air flow generating device such as a blower and which generates an air flow flowing in the axial direction of the wind tunnel axis. Has been. On the upstream side of the wind tunnel measuring unit 01, a plurality of rotating shafts 02 arranged in a line at right angles to the flow are provided upright, and each of the rotating shafts 02 is
Two to four vertical diaphragms 04 are attached to the outer peripheral surface. The rotating shaft 02 is rotated in the forward and reverse directions about the vertical axis by a rotating device 03 such as a pulse motor provided under the floor of the measuring unit 01. By rotating the rotating shaft 02,
The vertical vibrating plate 04 swings in the horizontal direction and is rectified to generate a uniform flow, which causes a change in the wind direction of the air flow 07 flowing into the measurement unit 01.
【0004】従って、測定部01の上流側に設置される
回転軸02、および鉛直振動板04からなる風向変動装
置の配置、および回転装置03による個々の回転軸02
の回転制御により、風洞測定部01には、現地に発生す
る地上の風向変動と相似な風向変動の気流が再現され、
このような気流7中に、例えば、煙突模型05と設置し
て、煙突模型05からガス06を排出させ、排出される
ガス06の濃度分布を風下側で計測することにより、実
際の煙突から排出される煙の現地における拡散状況を知
得でき、煙突設置に伴う環境アセスメントを風洞実験で
実施することができる。Therefore, an arrangement of the wind direction fluctuation device composed of the rotary shaft 02 installed on the upstream side of the measuring section 01 and the vertical vibration plate 04, and the individual rotary shafts 02 by the rotary device 03.
By controlling the rotation of the wind tunnel, the wind tunnel measuring unit 01 reproduces an air flow with a wind direction fluctuation similar to the ground wind direction fluctuation occurring at the site.
In such an air flow 7, for example, the chimney model 05 is installed, the gas 06 is discharged from the chimney model 05, and the concentration distribution of the discharged gas 06 is measured on the leeward side, so that the gas is discharged from the actual chimney. It is possible to know the diffusion situation of the smoke that is generated in the field, and it is possible to carry out an environmental assessment associated with the chimney installation by a wind tunnel experiment.
【0005】しかしながら、このように風洞測定部01
の風上側に、図示したように、流れと直交させて複数の
風洞変動装置を1列だけ設けて、風洞測定部01に風向
変動を発生させる、従来の風向変動風洞実験装置では、
風洞測定部01の風上側で発生させた風向変動が、風下
方向に行くに従って減衰し、拡がり幅が狭くなり、計測
を必要とする風下方向の所定位置においては、所定の風
向変動幅が維持できず、現地に発生する風向変動と差異
が生じるという問題点があった。However, as described above, the wind tunnel measuring unit 01
On the windward side of, as shown in the figure, a plurality of wind tunnel fluctuation devices are provided in one row so as to be orthogonal to the flow, and the wind direction fluctuation is generated in the wind tunnel measurement unit 01. In the conventional wind direction fluctuation wind tunnel experimental device,
The wind direction fluctuation generated on the windward side of the wind tunnel measurement unit 01 is attenuated in the leeward direction, and the spread width is narrowed, and the predetermined wind direction fluctuation range can be maintained at the predetermined position in the leeward direction that requires measurement. However, there was a problem in that there was a difference with the wind direction fluctuation that occurred locally.
【0006】すなわち、図に示すように、煙突模型05
から放出されたガス06は、鉛直振動板04の近傍で
は、鉛直振動板04の振動により発生する風向変動によ
り、左右に振れて、現地に設置された煙突から排出され
る煙と相似形をなし、幅広く広がるが、風下に行くに従
って、風向変動エネルギーが低減して、拡がり幅が狭く
なり、野外の実現象とは差異を生じる不具合があった。That is, as shown in the figure, the chimney model 05
In the vicinity of the vertical vibration plate 04, the gas 06 emitted from the gas sways to the left and right due to the change in the wind direction generated by the vibration of the vertical vibration plate 04, and has a shape similar to the smoke discharged from the chimney installed at the site. Although it spreads widely, the wind direction fluctuation energy decreases as it goes downwind, and the spread width narrows, which is a difference from the actual outdoor phenomenon.
【0007】[0007]
【発明が解決しようとする課題】本発明は、上述した従
来の風向変動風洞実験装置の不具合解消するため、少く
とも、風洞実験を行い計測に必要とする、設置された供
試模型より風下方向の所定位置までの風洞測定部には、
風向変動を連続して発生させ、風向変動幅の減衰を防止
できるようにした風向変動風洞実験装置の提供を課題と
する。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the conventional wind direction fluctuation wind tunnel test apparatus by at least the direction required to conduct the wind tunnel test and to measure the wind direction from the installed test model. In the wind tunnel measuring section up to the predetermined position of
An object of the present invention is to provide a wind direction fluctuation wind tunnel experiment device capable of continuously generating wind direction fluctuations and preventing attenuation of the wind direction fluctuation width.
【0008】[0008]
【課題を解決するための手段】このため、請求項1に示
す本発明の風向変動風洞実験装置は、次の手段とした。Therefore, the wind direction fluctuation wind tunnel experimental apparatus of the present invention as defined in claim 1 has the following means.
【0009】(1) 風洞測定部の床上に直立し、床下
に設けられた回転装置により、鉛直軸まわりに正逆方向
に回動させられる回転軸と、回転軸の外周に固着され、
回転軸の回動により、水平方向に揺動する振動板とから
なり、風洞測定部に風向変動を発生させる、風向変動装
置を風洞測定部の軸方向(風下方向)に複数列配設し
た。(1) The wind tunnel measuring section stands upright on the floor and is fixed to the outer circumference of the rotary shaft and the rotary shaft which is rotated in the forward and reverse directions about the vertical axis by a rotating device provided under the floor.
A plurality of rows of wind direction changing devices, which consist of a vibration plate that horizontally oscillates due to the rotation of the rotary shaft and generate a wind direction change in the wind tunnel measurement unit, are arranged in the axial direction (downward direction) of the wind tunnel measurement unit.
【0010】なお、風向変動装置は、風洞測定部に設置
された供試模型の風上側に、流れと直角な方向に複数本
配置したものを、少くとも1列設けるとともに、供試模
型の計測を必要とする風洞測定部の供試模型より風下側
に、同様に、流れと直角な方向に複数本配置したもの
を、少くとも1列設けて、風洞測定部全域に、同じ大き
さの風向変動を連続して発生させ、風洞測定部の軸方向
に発生する風向変動幅の減衰を防止できるように、風洞
測定部の軸方向に、複数列設けることが好ましい。ま
た、風洞測定部への各風向変動装置の配置は、平面視に
おいて格子状になるようにしても、千鳥格子状になるよ
うにしても良いものである。The wind direction changing device is provided with at least one row of a plurality of models arranged in the direction perpendicular to the flow on the windward side of the test model installed in the wind tunnel measurement section, and the measurement of the test model is performed. If there are at least one row of multiple wind tunnel measurement units arranged in the direction perpendicular to the flow, on the leeward side of the test model of the wind tunnel measurement unit, the wind direction of the same size is distributed over the entire wind tunnel measurement unit. It is preferable to provide a plurality of rows in the axial direction of the wind tunnel measuring unit so that the fluctuation can be continuously generated and the attenuation of the wind direction fluctuation width that occurs in the axial direction of the wind tunnel measuring unit can be prevented. Further, the arrangement of the wind direction changing devices in the wind tunnel measuring unit may be a grid shape or a staggered grid shape in a plan view.
【0011】(a)本発明の風向変動風洞実験装置は、
上述(1)の手段により、風洞測定部の全域に、風向変
動のエネルギーが連続して加えられることになり、風向
変動エネルギーが風洞測定部の風下方向に行くにつれ
て、減衰するのを防止することができ、現地に発生する
風向変動と相似な風向変動のある気流とすることができ
る。これにより、例えば、風洞測定部に設置された煙突
模型から放出されたガスは、風洞測定部に設置された供
試模型から所定量離れた風下側においても、左右に幅広
く拡散することになり、現地と相似な拡散現象を風洞測
定部に再現させることが出来る。(A) The wind direction fluctuation wind tunnel experimental apparatus of the present invention is
By means of the above-mentioned (1), the energy of the wind direction fluctuation is continuously applied to the entire area of the wind tunnel measurement unit, and it is prevented that the wind direction fluctuation energy is attenuated as it goes downwind of the wind tunnel measurement unit. Therefore, it is possible to obtain an airflow with a wind direction variation similar to the wind direction variation occurring locally. Thereby, for example, the gas released from the chimney model installed in the wind tunnel measurement unit will spread widely to the left and right even on the lee side, which is a predetermined amount away from the test model installed in the wind tunnel measurement unit, It is possible to reproduce the diffusion phenomenon similar to the site in the wind tunnel measurement section.
【0012】また、請求項2に示す本発明の風向変動風
洞実験装置は、次の手段とした。The wind direction fluctuation wind tunnel experimental apparatus of the present invention as defined in claim 2 has the following means.
【0013】(2) 風洞測定部の床上に直立し、上端
部および下端部が、風洞測定部を形成する天井および床
面にそれぞれ固定された支持棒を、風洞測定部に設置さ
れる供試模型の風上側および風下側のそれぞれに、少く
とも1列設けて、風洞測定部の軸方向に複数列配設し
た。なお、支持棒は流れと直角方向に複数本配置したも
のを列にして、風洞測定部全域に、同じ大きさの風向変
動を連続して発生させ、風洞測定部の軸方向に発生する
風洞変動幅の減衰を防止できるように、配置することが
望ましい。また、支持棒の配置は、平面視において格子
状、あるいは千鳥格子状にしても良い。(2) A test piece in which the support rods, which are upright on the floor of the wind tunnel measuring section and whose upper and lower ends are respectively fixed to the ceiling and floor surface forming the wind tunnel measuring section, are installed in the wind tunnel measuring section. At least one row was provided on each of the windward side and the leeward side of the model, and a plurality of rows were arranged in the axial direction of the wind tunnel measurement unit. The support rods are arranged in rows at right angles to the flow, and the same direction of wind direction fluctuation is continuously generated over the entire wind tunnel measurement section, and the wind tunnel fluctuation occurs in the axial direction of the wind tunnel measurement section. Arrangement is desirable so that width attenuation can be prevented. Further, the support rods may be arranged in a grid pattern or a zigzag pattern in plan view.
【0014】(3) 天井,床面間の1/2以下の縦方
向長さにされ、複数に分断された布片の1側端部を、支
持棒の高さ方向に略等ピッチに、固着して設けた。な
お、布片の横方向長さは、固着する支持棒と隣接する支
持棒の間隔以下にすることが好ましい。(3) The length of the ceiling and the floor is 1/2 or less in the longitudinal direction, and one side end of the cloth piece divided into a plurality of pieces is arranged at a substantially equal pitch in the height direction of the support rod. It was fixedly provided. In addition, it is preferable that the lateral length of the cloth piece is equal to or less than the distance between the support rods to be fixed and the adjacent support rods.
【0015】(b)本発明の風向変動風洞実験装置は、
上述(2),(3)の手段により、風洞測定部の気流の
平均エネルギーは、風洞測定部に流入したときの平均エ
ネルギーより減少するが、風向変動のエネルギーが連続
して加えられることになり、風向変動エネルギーの減衰
を防止することができ、上述(a)と同様に、現地に発
生する風向変動と相似な風向変動のある気流を、供試模
型設置部の風上側を含む風洞測定部全域に発生させるこ
とができる。(B) The wind direction fluctuation wind tunnel experimental apparatus of the present invention is
By means of the above (2) and (3), although the average energy of the air flow in the wind tunnel measurement unit is lower than the average energy when flowing into the wind tunnel measurement unit, the energy of wind direction fluctuation is continuously added. As in (a) above, it is possible to prevent the attenuation of the wind direction fluctuation energy, and the wind tunnel measuring section including the windward side of the test model installation section is used to generate an air flow with a wind direction fluctuation similar to the wind direction fluctuation occurring locally. It can be generated over the entire area.
【0016】従って、例えば、煙突模型から放出された
ガスは、左右に幅広く拡散することになり、野外と相似
な拡散現象を風洞測定部に再現することが出来る。ま
た、本発明の風向変動風洞実験装置では、回転装置およ
び駆動源等を必要とすることなく、風洞測定部に流れる
気流の布片への作用のみにより、風洞測定部の全域に、
風向変動のエネルギーが連続して加えられることになる
ので、構造が簡単になるとともに、運転コストを含め、
安価な装置とすることができる。Therefore, for example, the gas emitted from the chimney model diffuses widely to the left and right, and a diffusion phenomenon similar to the field can be reproduced in the wind tunnel measurement section. Further, in the wind direction fluctuation wind tunnel experimental device of the present invention, without the need for a rotating device and a drive source, only the action of the air flow flowing through the wind tunnel measurement unit to the cloth piece, the entire wind tunnel measurement unit,
Since the energy of wind direction fluctuation will be continuously applied, the structure will be simple and the operating cost will be included.
An inexpensive device can be provided.
【0017】[0017]
【発明の実施の形態】以下、本発明の風向変動風洞実験
装置の実施の一形態を図面にもとづき説明する。図1
は、本発明の風向変動風洞実験装置の実施の第1形態に
示す図で、図1(a)は側面図、図1(b)は図1
(a)に示す矢視A−Aにおける平面図である。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the wind direction fluctuation wind tunnel experimental apparatus of the present invention will be described below with reference to the drawings. FIG.
FIG. 1 is a diagram showing a first embodiment of a wind direction fluctuation wind tunnel experimental apparatus of the present invention, FIG. 1 (a) is a side view, and FIG. 1 (b) is FIG.
It is a top view in arrow AA shown in (a).
【0018】図に示すように、送風機等を具え、軸方向
に流れる気流を内部に発生させる、風洞の途中には、供
試模型としての煙突模型5を設置する風洞測定部1が設
けられている。この煙突模型5より風上側の風洞測定部
1には、床を貫通して直立するとともに、上端が天井に
設けた軸受で支持されて回動自在にされ、流れに直角な
方向に複数本配置され、1列に並べられた回転軸2aが
設けられている。この回転軸2aのそれぞれには、2〜
4枚からなり、回転軸2aの回動とともに、水平方向に
揺動する鉛直振動板4aが固着されている。As shown in the figure, a wind tunnel measuring section 1 for installing a chimney model 5 as a test model is provided in the middle of the wind tunnel, which is equipped with a blower or the like and internally generates an air flow flowing in the axial direction. There is. In the wind tunnel measuring section 1 on the windward side of the chimney model 5, the floor is erected through the floor, and the upper end is supported by a bearing provided on the ceiling so as to be rotatable, and a plurality of them are arranged in a direction perpendicular to the flow. The rotary shafts 2a arranged in one line are provided. 2 to each of the rotating shafts 2a
A vertical vibrating plate 4a, which is made up of four sheets, is fixed to the rotary shaft 2a so as to swing in the horizontal direction as the rotary shaft 2a rotates.
【0019】また、この回転軸2aのそれぞれは、測定
部1の床下に設けたパルス・モータなどの回転装置3a
で、鉛直軸周りに回転させられ、この回転軸2aの回転
により、鉛直振動板4aが水平方向に揺動し、整流され
て測定部1に流入した気流7の風向を変動させる。測定
部1の上流側、すなわち、煙突模型5の風上側に設置さ
れる回転軸2a、および鉛直振動板4aからなる、第1
列目風向変動装置8aの配置、および回転装置3aによ
る、個々の回転軸2aの回転制御により、煙突模型5の
風上側には、現地の風向変動と相似な風向変動を再現さ
せることができる。Further, each of the rotating shafts 2a is provided with a rotating device 3a such as a pulse motor provided under the floor of the measuring unit 1.
Then, the vertical vibration plate 4a is rotated around the vertical axis, and the vertical vibration plate 4a is horizontally swung by the rotation of the rotation axis 2a, and the wind direction of the airflow 7 that is rectified and flows into the measurement unit 1 is changed. The first side includes a rotary shaft 2a installed on the upstream side of the measurement unit 1, that is, on the windward side of the chimney model 5, and a vertical diaphragm 4a.
By arranging the row wind direction changing device 8a and controlling the rotation of each rotating shaft 2a by the rotating device 3a, it is possible to reproduce a wind direction change similar to the local wind direction change on the windward side of the chimney model 5.
【0020】同様に、風洞測定部1の煙突模型6の風下
側には、第1列目の風向変動装置8aと同様な構成にさ
れた、第2列目の風向変動装置8b、および第3列目の
風向変動装置8cが設けられている。Similarly, on the leeward side of the chimney model 6 of the wind tunnel measuring unit 1, the second-direction air-direction changing device 8b and the third-direction air-direction changing device 8a each having the same structure as the first-row air-direction changing device 8a. The wind direction changing device 8c in the second row is provided.
【0021】このように、風洞測定部1に設置された煙
突模型5の風上側に、風向変動装置8aを設けるととも
に、煙突模型5の風下側全域に、複数の風向変動装置8
b,8cを第2列目、第3列目として設け、これ等の風
向変動装置8b,8cを構成する、回転軸2b,2cと
鉛直振動板4b,4cを、回転装置3b,3cで回転揺
動させることにより、第1列目の風向変動装置8aで発
生した風向変動は、減衰することなく、風洞測定部1の
風下側においても、同様に保持され、風向変動幅が低減
することがなくなり、煙突模型5から排出されるガス6
は、野外の実際の拡散と相似な状態で拡散される。すな
わち、風洞測定部1全域には、現地の野外の実現象と同
様な、風向変動を発生させることができる。As described above, the wind direction changing device 8a is provided on the windward side of the chimney model 5 installed in the wind tunnel measuring section 1, and a plurality of wind direction changing devices 8 are provided all over the leeward side of the chimney model 5.
Rotating shafts 2b and 2c and vertical diaphragms 4b and 4c, which are provided as b and 8c in the second and third rows and constitute wind direction changing devices 8b and 8c, are rotated by the rotating devices 3b and 3c. By oscillating, the wind direction fluctuation generated in the wind direction fluctuation device 8a in the first row is not attenuated and is similarly held on the leeward side of the wind tunnel measurement unit 1, and the width of the wind direction fluctuation can be reduced. Gas 6 exhausted from the chimney model 5
Is spread in a state similar to the actual spread in the field. That is, it is possible to generate the wind direction variation in the entire wind tunnel measurement unit 1, which is similar to the actual field phenomenon in the field.
【0022】また、風向変動装置8a〜8cの回転揺動
の方法としては、風洞測定部1に流入する、整流された
気流7の風向と平行な角度を0度として、所定の風向変
動幅θ度の間で、一様な乱数分布となるような、回転角
度で回転揺動させることが効果的である。さらに、鉛直
振動板4a〜4cと回転軸2a〜2cの接合部の一部
に、空間を設けて回動揺動させるようにすると、これら
の風向変動装置8a〜8cで発生する風向変動渦の大き
さが均一ではなくなり、野外の実際の渦の構成に近づけ
ることができ、ガスの拡散が、より野外における拡散と
相似になるようにすることができる。As a method of rotating and swinging the wind direction changing devices 8a to 8c, a predetermined wind direction changing width θ is set with an angle of 0 degree parallel to the wind direction of the rectified airflow 7 flowing into the wind tunnel measuring unit 1. It is effective to rotate and oscillate at a rotation angle so as to obtain a uniform random number distribution between degrees. Further, when a space is provided in a part of the joint between the vertical diaphragms 4a to 4c and the rotary shafts 2a to 2c so as to be pivotally oscillated, the size of the wind direction fluctuation vortices generated by these wind direction fluctuation devices 8a to 8c. Can be non-uniform, approaching the actual eddy configuration in the field and making gas diffusion more similar to field diffusion.
【0023】次に、図2は、本発明の風向変動風洞実験
装置の実施の第2形態を示す図で、図2(a)は側面
図、図2(b)は、図2(a)に示す矢視B−Bにおけ
る平面図である。Next, FIG. 2 is a view showing a second embodiment of the wind direction fluctuation wind tunnel experimental apparatus of the present invention, FIG. 2 (a) is a side view, and FIG. 2 (b) is FIG. 2 (a). It is a top view in the arrow BB shown in FIG.
【0024】図に示すように、供試模型としての煙突模
型5が床面9に設置された風洞測定部1には、上端部が
天井10に、また下端部が床面9に固着されて、直立す
るとともに、気流7の方向と直角な方向に4本配置さ
れ、1列に並べられた支持棒11が設けられている。こ
の支持棒11には、1側端部を固着した長方形の布片1
2が、高さ方向に等ピッチに間隔を設けて3枚設けられ
ている。As shown in the figure, in a wind tunnel measuring section 1 in which a chimney model 5 as a test model is installed on a floor surface 9, the upper end is fixed to the ceiling 10 and the lower end is fixed to the floor surface 9. Further, four support rods 11 are provided which are upright and arranged in a line at right angles to the direction of the air flow 7 and arranged in one row. The support rod 11 has a rectangular piece 1 of which one end is fixedly attached.
Two 2 are provided at equal pitches in the height direction.
【0025】1列に並べられた支持棒11は、支持棒1
1に固着された布片12により、一様流で風洞測定部1
に流入する気流7に、現地の風向変動を相似する風向変
動が煙突模型5の設置位置に発生できるように、煙突模
型5の風上側に第1列目を設けるとともに、この布片1
2により発生した風向変動の減衰を考慮した間隔を設け
て、第1列目の風下側に第2列目,第3列目、および第
4列目を設けている。また、布片12は、上述したよう
に、高さ方向に間隔を設けて複数枚設けられるため、縦
方向の長さは、床面9,天井10の間隔の枚数分の1以
下にされるとともに、横方向の長さは、固着した支持棒
11に隣接して配設される支持棒11と干渉を起さない
大きさにされている。The support rods 11 arranged in one row are the support rods 1.
The wind tunnel measuring unit 1 with a uniform flow by the cloth piece 12 fixed to 1
A first row is provided on the windward side of the chimney model 5 so that a wind direction variation similar to the local wind direction variation can be generated at the installation position of the chimney model 5 in the airflow 7 flowing into
The second row, the third row, and the fourth row are provided on the leeward side of the first row with an interval in consideration of the attenuation of the wind direction fluctuation caused by 2. Further, as described above, the plurality of cloth pieces 12 are provided at intervals in the height direction, so that the length in the vertical direction is set to be equal to or less than the number of spaces between the floor surface 9 and the ceiling 10. At the same time, the lateral length thereof is sized so as not to interfere with the support rod 11 arranged adjacent to the fixed support rod 11.
【0026】このように、本実施の形態では、風洞測定
部1に設置した模型煙突5の風上と風下との全域に、気
流7と方向と直交する方向に、複数の支持棒11を直立
させて形成された列を複数列設け、この支持棒11の各
々に、複数の揺動する布片12を設置して、気流7の作
用によって揺動させるようにしたので、風洞測定部内全
域での風向変動は、所定の大きさに維持された気流7に
することができ、煙突から放出されたガスは、野外と相
似な拡散幅となる。特に、布片12によって発生する風
向変動渦の大きさは均一ではないので、野外で実際に発
生する渦の構成に近くなり、ガスの拡散が、より野外に
おける拡散状況を相似するものとなる。また、本実施の
形態の風向変動風洞実験装置では、実施の第1形態で示
した、パルスモータ等の回転装置3a、およびこれを駆
動する駆動源を必要とすることなく、風洞測定部1に流
入する気流7のエネルギーで風向変動を発生させるよう
にしたので、風洞測定部1の気流7の平均エネルギー
が、流入時の平均エネルギーよりも減少するものの、構
成が簡素なものになり、取扱いが容易になるとともに、
運転コストを含む、装置のコストを低廉なものにするこ
とができる。As described above, in the present embodiment, a plurality of support rods 11 are erected upright in the direction orthogonal to the air flow 7 over the entire windward and leeward of the model chimney 5 installed in the wind tunnel measuring section 1. A plurality of rows formed by the above are provided, and a plurality of oscillating cloth pieces 12 are installed on each of the support rods 11 and oscillated by the action of the air flow 7. The fluctuation of the wind direction can be the airflow 7 maintained at a predetermined size, and the gas discharged from the chimney has a diffusion width similar to that in the field. In particular, since the size of the wind direction fluctuation vortex generated by the cloth piece 12 is not uniform, it becomes close to the configuration of the vortex actually generated in the field, and the diffusion of gas becomes more similar to the diffusion situation in the field. Further, in the wind direction fluctuation wind tunnel experiment device of the present embodiment, the wind tunnel measurement unit 1 is provided without the need for the rotating device 3a such as the pulse motor and the drive source for driving the rotating device 3a described in the first embodiment. Since the wind direction fluctuation is generated by the energy of the inflowing airflow 7, the average energy of the airflow 7 of the wind tunnel measurement unit 1 is lower than the average energy at the inflowing time, but the configuration is simple and the handling is easy. As it becomes easier
The cost of the device can be kept low, including operating costs.
【0027】[0027]
【発明の効果】以上述べたように、本発明の風向変動風
洞実験装置によれば、請求項1,2に示す構成により、
風洞測定部全域で、風向変動は、所定の大きさに維持さ
れ、風洞測定部に設置された、供試模型により発生する
攪乱は、減衰することなく、風洞測定部全域で保持でき
る。従って、例えば、煙突模型から放出されたガスは、
風洞測定部の下流側の測定個所においても、野外と相似
な拡散幅とすることができる。As described above, according to the wind direction fluctuation wind tunnel experiment device of the present invention, the configuration according to claims 1 and 2 provides
The wind direction fluctuation is maintained at a predetermined magnitude in the entire wind tunnel measurement unit, and the disturbance generated by the test model installed in the wind tunnel measurement unit can be maintained in the entire wind tunnel measurement unit without being attenuated. So, for example, the gas emitted from the chimney model is
Even at the measurement location on the downstream side of the wind tunnel measurement section, the diffusion width can be similar to that in the field.
【0028】これにより、風洞測定部に設置された煙突
模型から放出されたガスは、風洞測定部の風下側におい
ても、左右に幅広く拡散することになり、野外と相似な
拡散現象を風洞内に再現することができ、精度の高い環
境アセスメント結果を、風洞実験で取得することができ
る。さらに、請求項2に示す構成により、従来の風向変
動実験装置に比較して、簡素な構成のものとすることが
でき、風洞実験が容易になるとともに、運転コストを含
む装置の低廉化ができる。As a result, the gas emitted from the chimney model installed in the wind tunnel measurement unit diffuses widely to the left and right even on the leeward side of the wind tunnel measurement unit, and a diffusion phenomenon similar to the field is diffused in the wind tunnel. The environmental assessment results that can be reproduced and are highly accurate can be obtained by wind tunnel experiments. Further, with the configuration according to claim 2, it is possible to make the configuration simpler than that of the conventional wind direction fluctuation experiment device, facilitate the wind tunnel experiment, and reduce the cost of the device including the operating cost. .
【図1】本発明の風向変動風洞実験装置の実施の第1形
態を示す図で、図1(a)は側面図、図1(b)は図1
(a)に示す矢視A−Aにおける平面図、1A and 1B are diagrams showing a first embodiment of a wind direction fluctuation wind tunnel experimental apparatus of the present invention, in which FIG. 1A is a side view and FIG. 1B is FIG.
The top view in the arrow AA shown in (a),
【図2】本発明の風向変動風洞実験装置の実施の第2形
態を示す図で、図2(a)は側面図、図2(b)は図2
(a)に示す矢視B−Bにおける平面図、2A and 2B are views showing a second embodiment of the wind direction fluctuation wind tunnel experiment device of the present invention, FIG. 2A being a side view and FIG.
The top view in the arrow BB shown in (a),
【図3】従来の風向変動風洞実験装置の1例を示す図
で、図3(a)は側面図、図3(b)は図3(a)に示
す矢視C−Cにおける平面図である。3A and 3B are views showing an example of a conventional wind direction fluctuation wind tunnel experiment device, FIG. 3A is a side view, and FIG. 3B is a plan view taken along the arrow CC shown in FIG. 3A. is there.
1 風洞測定部 2a,2b,2c 回転軸 3a,3b,3c 回転装置 4a,4b,4c 鉛直振動板 5 煙突模型 6 ガス(流れ) 7 気流 8a,8b,8c 風向変動装置 9 床面 10 天井 11 支持棒 12 布片 1 Wind Tunnel Measuring Section 2a, 2b, 2c Rotating Shafts 3a, 3b, 3c Rotating Device 4a, 4b, 4c Vertical Vibration Plate 5 Chimney Model 6 Gas (Flow) 7 Air Flow 8a, 8b, 8c Wind Direction Change Device 9 Floor 10 Ceiling 11 Support rod 12 piece of cloth
Claims (2)
回転軸に固着され、水平方向に揺動する振動板とからな
る風向変動装置、および前記風洞測定部の床下に設置さ
れた回転装置で構成され、前記回転装置による前記回転
軸の駆動により前記振動板を揺動させて、前記風洞測定
部に風向変動を発生させる風向変動風洞実験装置におい
て、前記風向変動装置を前記風洞測定部の軸方向に複数
列配設したことを特徴とする風向変動風洞実験装置。1. A wind direction changing device comprising a rotating shaft upright in a wind tunnel measuring unit and a diaphragm fixed to the rotating shaft and swinging in a horizontal direction, and a rotation installed under the floor of the wind tunnel measuring unit. A wind direction fluctuation wind tunnel experimental device configured to generate a wind direction fluctuation in the wind tunnel measurement unit by rocking the diaphragm by driving the rotation shaft by the rotation device, wherein the wind direction fluctuation device is the wind tunnel measurement unit. A wind direction fluctuation wind tunnel experimental device characterized by being arranged in a plurality of rows in the axial direction of the.
変動風洞実験装置において、前記風洞測定部に設置され
た供試模型の風上側、および風下側に複数列立設され、
上端部および下端部が前記風洞測定部の天井、および床
面にそれぞれ固定された支持棒と、高さ方向に複数に分
割され、1側端部が前記支持棒に固着された布片とから
なることを特徴とする風向変動風洞実験装置。2. A wind direction fluctuation wind tunnel experimental apparatus for generating a wind direction fluctuation in a wind tunnel measuring unit, wherein a plurality of columns are erected on a windward side and a leeward side of a test model installed in the wind tunnel measuring unit,
From a support rod whose upper end and lower end are fixed to the ceiling and floor of the wind tunnel measuring unit, respectively, and a piece of cloth which is divided into a plurality in the height direction and whose one end is fixed to the support rod. A wind direction fluctuation wind tunnel experiment device characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2786596A JPH09218127A (en) | 1995-12-07 | 1996-02-15 | Wind tunnel test device for wind direction fluctuation |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7-318976 | 1995-12-07 | ||
JP31897695 | 1995-12-07 | ||
JP2786596A JPH09218127A (en) | 1995-12-07 | 1996-02-15 | Wind tunnel test device for wind direction fluctuation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09218127A true JPH09218127A (en) | 1997-08-19 |
Family
ID=26365856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2786596A Withdrawn JPH09218127A (en) | 1995-12-07 | 1996-02-15 | Wind tunnel test device for wind direction fluctuation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09218127A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104596725A (en) * | 2015-01-26 | 2015-05-06 | 大连理工大学 | Semi-active simulator of harmonic wind field of wind tunnel |
CN105910793A (en) * | 2016-06-12 | 2016-08-31 | 哈尔滨工业大学深圳研究生院 | Active vibration grating capable of increasing atmosphere boundary layer wind tunnel turbulence level |
CN106768793A (en) * | 2016-12-06 | 2017-05-31 | 华南农业大学 | The wind room of flight environment of vehicle outside a kind of simulation unmanned plane room with detection function |
CN115436008A (en) * | 2022-10-20 | 2022-12-06 | 国网甘肃省电力公司电力科学研究院 | Device and method for simulating low-altitude rapid flow pulsating wind field |
-
1996
- 1996-02-15 JP JP2786596A patent/JPH09218127A/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104596725A (en) * | 2015-01-26 | 2015-05-06 | 大连理工大学 | Semi-active simulator of harmonic wind field of wind tunnel |
CN105910793A (en) * | 2016-06-12 | 2016-08-31 | 哈尔滨工业大学深圳研究生院 | Active vibration grating capable of increasing atmosphere boundary layer wind tunnel turbulence level |
CN106768793A (en) * | 2016-12-06 | 2017-05-31 | 华南农业大学 | The wind room of flight environment of vehicle outside a kind of simulation unmanned plane room with detection function |
CN115436008A (en) * | 2022-10-20 | 2022-12-06 | 国网甘肃省电力公司电力科学研究院 | Device and method for simulating low-altitude rapid flow pulsating wind field |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Kanda et al. | Passive scalar diffusion in and above urban-like roughness under weakly stable and unstable thermal stratification conditions | |
JPH09218127A (en) | Wind tunnel test device for wind direction fluctuation | |
JP2009150669A (en) | Wind tunnel experiment device | |
US4646564A (en) | Method for testing gas diffusion and apparatus for same | |
JPH09159571A (en) | Wind direction variation device for wind tunnel | |
JPH0564288B2 (en) | ||
JP3207707B2 (en) | Turbulent grid | |
JPH1062298A (en) | Turbulent flow generating device | |
JPS61139740A (en) | Wind tunnel | |
JPH0499940A (en) | Ground boundary layer wind velocity distribution controller of wind tunnel | |
JPH11352009A (en) | Boundary layer turbulence generator | |
JPH10115571A (en) | Wind-tunnel experimenting apparatus | |
JPS6216671Y2 (en) | ||
JP3495547B2 (en) | Wind direction fluctuation reproduction wind tunnel | |
JPH0114903Y2 (en) | ||
Flay et al. | Model tests of twisted flow wind tunnel designs for testing yacht sails | |
JPS6245152Y2 (en) | ||
JPS61120036A (en) | Wind channel | |
JPH0335139A (en) | Fluid testing method | |
JPS5828202Y2 (en) | Wind tunnel airflow turbulence variable device | |
CN113884272B (en) | Wind tunnel test device and method for simulating multi-scale turbulence structure of atmospheric boundary layer | |
CN115014698A (en) | Typhoon field wind speed profile and non-steady wind simulation device, system and method | |
JP2023034690A (en) | Wind tunnel current generating device | |
JPH0450529Y2 (en) | ||
JPH0416188Y2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030506 |