JPS61230040A - Gas diffusion testing method - Google Patents
Gas diffusion testing methodInfo
- Publication number
- JPS61230040A JPS61230040A JP7148385A JP7148385A JPS61230040A JP S61230040 A JPS61230040 A JP S61230040A JP 7148385 A JP7148385 A JP 7148385A JP 7148385 A JP7148385 A JP 7148385A JP S61230040 A JPS61230040 A JP S61230040A
- Authority
- JP
- Japan
- Prior art keywords
- wind
- model
- gas
- gas diffusion
- terrain
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Algebra (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Fluid Mechanics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、自然界におけるガスの拡散を実験室的に模擬
するガス拡散試験方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas diffusion test method that simulates gas diffusion in the natural world in a laboratory manner.
煙突やトンネルの排気筒などから出る煙。 Smoke emitted from chimneys and tunnel exhaust stacks.
クーリングタワーなどから出る熱、′！またＬＮＧタン
クから漏洩するガスなどは、風に乗って拡散して行く。Heat emitted from cooling towers, etc. Additionally, gas leaking from LNG tanks will spread on the wind.
これら自然界における現象を実験室内で模擬する場合に
は、風洞が用いられることになる。従って、自然界を風
洞内に持ち込む為に、煙突などの模型とともにその煙突
が設置される付近の山河や建物などもいわゆる地形模型
として風洞内に入れられることになる。Wind tunnels are used to simulate these phenomena in the natural world in a laboratory. Therefore, in order to bring the natural world into the wind tunnel, along with a model of the chimney, mountains, rivers, buildings, etc. in the vicinity of the chimney are also placed inside the wind tunnel as a so-called topographical model.
このようにして、模型の煙突などから特別な気体を吐出
し、風洞内に風を流し、その模型による気体の広がりを
変色試験や、トラバ−スによる吸引・ガス分析などに゛
よりて観察・測定しているし一般に、風洞は固定されて
おυ、同様に風路内の地形模型も固定されておシ、−回
の試験において２例えば南風が吹いた場合などという特
別な条件下においてのみ拡散が試験測定されることにな
る。In this way, a special gas is discharged from the chimney of the model, the wind is passed through the wind tunnel, and the spread of the gas through the model is observed by color change tests, suction by traverse, gas analysis, etc. Generally speaking, the wind tunnel is fixed and the topographical model inside the wind channel is also fixed. Only diffusion will be tested and measured.
もし、北風によるガスの拡散を測定しようとすると、風
洞内で地形模型を反転させてやる必要があるが、模型の
煙突などから気体を出す配管、ガス吸引のバイブなどが
接続されているので、地形模型を反転するには困難があ
った。If we were to measure the diffusion of gas due to northerly winds, we would need to invert the terrain model inside the wind tunnel, but since the model's chimney, etc., are connected to pipes that emit gas, as well as gas suction vibrators, etc. There were difficulties in inverting the terrain model.
しかし、いずれにしても従来のガス拡散試験では、それ
ぞれの風向・風速におけるガス拡散試験を夫々側々に行
っていたにすぎないものである。However, in any case, in the conventional gas diffusion test, the gas diffusion test was merely conducted on each side in each wind direction and wind speed.
屋上に配設した風見鶏を見るまでもなく。There is no need to look at the weather vane placed on the roof.
自然界における風の風向は一時として一定しておらず、
数時間の間でも実に風向の分布は広範囲なものである。The wind direction in the natural world is not constant at any given time.
Even within a few hours, the distribution of wind direction is wide-ranging.
また、詳細に風を見ると風向のみならず。Also, when you look at the wind in detail, you can see not only the direction of the wind.
風速までも変化しており、これら風向と風速を加味した
ガス拡散試験も当然必要であるにもかかわらず、従来は
行われていなかった。Even the wind speed is changing, and gas diffusion tests that take these wind directions and speeds into account are of course necessary, but they have not been done in the past.
本発明は、このように時々刻々と変化する風向を正しく
模擬するようにしたもので、風洞の風路内に地形模型を
配置し、同模型の定位置よシ気体を吐出して、その拡散
を試験するようにしたガス拡散試験方法において、上記
風路を回転可能とし、吹く風の方向の時間的分布を予め
設定し、その風の方向時間的分布に基づいて風路を回転
させるようにしたガス拡散試験方法を提供するものであ
る。The present invention is designed to accurately simulate the wind direction, which changes from moment to moment, by placing a terrain model in the wind path of a wind tunnel, discharging gas from a fixed position of the model, and dispersing it. In the gas diffusion test method, the air passage is rotatable, the temporal distribution of the direction of the blowing wind is set in advance, and the air passage is rotated based on the temporal distribution of the direction of the wind. The present invention provides a gas diffusion test method based on the above-described method.
また２本発明は、風洞の風路内に地形模型を配置し、同
模型の定位置よシ気体を吐出して、その拡散を試験する
ようにしたガス拡散試験方法において、上記風路を回転
可能とし。In addition, the present invention provides a gas diffusion test method in which a terrain model is placed in the wind path of a wind tunnel, and gas is discharged from a fixed position of the model to test its diffusion, in which the air path is rotated. possible.
吹く風の方向の時間的分布および風速を予め設定し、そ
の風の方向時間的分布に基づいて風路を回転させるとと
もに、風路２内の風速を変化させるようにしたガス拡散
試験方法をも提供するものである。A gas diffusion test method is also provided in which the temporal distribution of wind direction and wind speed are set in advance, and the wind path is rotated based on the temporal distribution of wind direction and the wind speed in the air path 2 is changed. This is what we provide.
以下のガス拡散試験方法を１図面に示した実施する為の
装置によシ説明する。The following gas diffusion test method will be explained using an apparatus for carrying out the test shown in one drawing.
仕切板１５の間に配設されたファン１４によって発生さ
れる定常流に整流された気流１が吹き込まれる風路２の
床面３の中央に、模型の煙突５などの地形模型を置く地
形テーブル４が設けられており、その上面は床面３と一
致する。同地形テーブル４には模型煙突５が貫通して植
設されておシ、また地形テーブル４上面には模型建屋６
．模型地形１７などのいわゆる地形模型が配設されてい
る。風路２の側面は、中の地形模型が透視可能な強化ガ
ラス々どで出来ておシ、気流１は仕切板１５と整流板１
６で整流されている。床面３は。A topography table on which a topography model such as a model chimney 5 is placed in the center of the floor surface 3 of an air passage 2 into which airflow 1 rectified into a steady flow generated by a fan 14 disposed between partition plates 15 is blown. 4 is provided, the upper surface of which coincides with the floor surface 3. A model chimney 5 is installed through the topography table 4, and a model building 6 is installed on the top surface of the topography table 4.
．． So-called terrain models such as model terrain 17 are arranged. The sides of the air passage 2 are made of tempered glass that allows the terrain model inside to be seen through, and the air flow 1 is made of a partition plate 15 and a rectifier plate 1.
It is rectified by 6. Floor 3 is.
地面１Ｂの上に設けられた支柱基礎１９で円周状に支持
され、この上の転がシローラ１３の上に乗せられている
。このため、ファ／１４を含め風路２は自由に水平面内
で回転出来るようになっている。It is supported in a circumferential manner by a pillar foundation 19 provided on the ground 1B, and the rollers on this are placed on top of the rollers 13. Therefore, the air passage 2 including the F/14 can freely rotate within the horizontal plane.
地形テーブル４の下面には２円周板９が突設されておシ
、上記床面３の開口した円周部の下方に上向きに取９つ
けられた円周溝８に収納されたシール液１０中に上記円
周板９が浸されている。従って、シール液１０によシ床
面３と地形テーブル４との間隙１１はシールされ、ニア
リークが防止されている。なお。Two circumferential plates 9 are protruded from the lower surface of the topographical table 4, and a sealing liquid is stored in a circumferential groove 8 that is installed downward in the open circumferential portion of the floor surface 3 and faces upward. The circumferential plate 9 is immersed in the container 10. Therefore, the gap 11 between the floor surface 3 and the topography table 4 is sealed by the sealing liquid 10, and near leakage is prevented. In addition.
風路２は図示しない適宜手段で回転し、また模型煙突５
からはトレーサ用のガス７が吐出される。The air passage 2 is rotated by an appropriate means (not shown), and the model chimney 5
Gas 7 for tracer is discharged from.
一方、地形テーブル４上に集約さ、れた地形上に吹く風
を９次のようにして予め定める。On the other hand, the wind blowing on the terrain summarized on the terrain table 4 is predetermined in a 9-order manner.
実際に煙突が配置された。または予定の現地において、
−日の間に吹く風の例えば４ない、 Ｌ ５
ｍ ／ ｓの風の１６方位の度数分布を測定し、第３
図に示すような風紀図を作る。A chimney was actually placed. or at the scheduled location,
- The wind that blows during the day, e.g. 4, L 5
The frequency distribution of m/s wind in 16 directions was measured, and the third
Create a moral chart like the one shown in the figure.
第３図には、１６方位の度数分布をパーセント表示して
あり１例えば３０分で一日間のガス拡散を試験しようと
すれば、１％が１８秒に相当することになる。In FIG. 3, the frequency distribution in 16 directions is expressed as a percentage.1 For example, if one were to test gas diffusion for one day in 30 minutes, 1% would correspond to 18 seconds.
さて、実地対応５ ｍ ／ ｓに相当する風を風路内に
作り、地形テーブル４．風路２を２２．５度づつ回転さ
せ、第３図の風紀図の度数に見合った時間だけにその位
置で気流１を維持する。もし、西風からガス拡散を初め
るとすると、地形テーブル４上の模型煙突５の西側を風
路２の気流１へ向けておき、風洞内の風が整定された所
でガス７を吐出する。Now, create a wind equivalent to 5 m/s in the wind path and create a topography table 4. The air passage 2 is rotated 22.5 degrees at a time, and the air flow 1 is maintained at that position only for a period of time commensurate with the degree of the moral chart shown in FIG. If gas diffusion is to start from a westerly wind, the west side of the model chimney 5 on the topography table 4 is directed toward the airflow 1 of the wind path 2, and the gas 7 is discharged when the wind in the wind tunnel is stabilized.
まず、１４４（８Ｘ１８）秒間そのｔまにして拡散試験
を続け１次に風路２を時計回りに２２．５度回転させ、
３９６（２２Ｘ１８）秒間固定する。このような操作を
繰り返し。First, the diffusion test was continued for 144 (8 x 18) seconds, and then the air passage 2 was rotated 22.5 degrees clockwise.
Fix for 396 (22X18) seconds. Repeat these operations.
風路２を１回転させ、拡散実験を終了する。The air passage 2 is rotated once and the diffusion experiment is completed.
なお、第３図は１６方位のもの（２２，５度で分割）を
示したが、３２方位（１１，２５度分割）でも任意に選
べることは当然であり。Although FIG. 3 shows 16 directions (divided by 22.5 degrees), it is of course possible to arbitrarily select 32 directions (divided by 11.25 degrees).
また、ガス７の拡散状況の測定は１例えば変色試験方法
によって行われる。Further, the diffusion state of the gas 7 is measured by, for example, a color change test method.
このように本発明のガス拡散試験方法によると、従来一
方向の風による拡散しか模擬出来なかったものが２例え
ば−日や１ケ月の間とかに全方向から吹く平均的風によ
る拡散を模擬することが出来る。In this way, according to the gas diffusion test method of the present invention, diffusion that could only be simulated by wind in one direction can now be simulated by average winds blowing from all directions over a period of -2 days or a month, for example. I can do it.
次に風向のみならず、風速までも加味したガス拡散試験
方法について説明する。現在。Next, a gas diffusion test method that takes into account not only the wind direction but also the wind speed will be explained. the current.
火力発電所などは燃料の輸送や公害の問題等から海岸沿
に建設している。海岸付近はいわゆる海風・山風として
一日の間に風向きが変化し、また゛年間でみると風速も
かなり異なり。Thermal power plants and other facilities are built along the coast due to fuel transportation and pollution issues. Near the coast, the direction of the wind changes throughout the day, in the form of sea breezes and mountain winds, and the wind speed also varies considerably over the course of a year.
全方向から吹く風の平均風速に大きな差のあるものであ
る。このような場合には、単に風の吹く方向だけでなく
、その風速も変化させたガス拡、散試験が必要となる。There is a large difference in the average wind speed of wind blowing from all directions. In such cases, it is necessary to conduct a gas diffusion test in which not only the wind direction but also the wind speed is varied.
第４図には１例として１６方位の風速を含んだ風紀図を
示しである。すなわち、ある期間で多数の時点で１６方
位の風向と風速を測定し、風向に対し、ではその度数を
、また夫々の方位で測定された風速を平均して示したも
ので、実線で示す風向はパーセント表示２点線で示す風
速はｍ ／ ｓで表示しである。FIG. 4 shows, as an example, a chronology chart that includes wind speeds in 16 directions. In other words, the wind direction and wind speed are measured in 16 directions at a number of points in a certain period, and the wind direction is shown in degrees and the wind speed measured in each direction is averaged.The wind direction is shown by the solid line. The wind speed is shown in percentage and the two dotted lines are shown in m/s.
この場合の試験方法は、先に示したものとほぼ同じよう
にして行うが、特徴的な点は夫々の方位で風洞内の気流
１の風速を、その方位の平均風速に対応した風速に変化
させることでアシ、通常はファン１４の回転数調整で行
うが、他の方法で変化させてももちろん良い０
〔効 果〕
このように本発明に係わるガス拡散試験方法によると、
煙・熱・ＬＮＧガスなどガス発生源の設置される現地の
自然条件に合致したガス拡散状況を調査することが出来
る。The test method in this case is almost the same as the one shown above, but the characteristic point is that the wind speed of airflow 1 in the wind tunnel is changed in each direction to a wind speed corresponding to the average wind speed in that direction. This is usually done by adjusting the rotation speed of the fan 14, but it is of course possible to change it by other methods. [Effect] As described above, according to the gas diffusion test method according to the present invention,
It is possible to investigate gas diffusion conditions that match the natural conditions of the site where gas generating sources such as smoke, heat, and LNG gas are installed.
第１図は本発明のガス拡散試験方法で用いる装置の縦断
面、第２図は第１図の■−■断面図。
第３図は風向の度数を示す風紀図、第４図は風向の度数
と平均風速を示す風紀図である。
に気流、２：測定室、３：床面、４：地形テーブル、７
：ガス、１４：ファン、１７：地形模型。FIG. 1 is a longitudinal section of an apparatus used in the gas diffusion test method of the present invention, and FIG. 2 is a sectional view taken along the line 1--2 of FIG. Fig. 3 is an ecological chart showing the frequency of wind direction, and Fig. 4 is an ecological chart showing the frequency of wind direction and average wind speed. airflow, 2: measurement room, 3: floor surface, 4: terrain table, 7
: Gas, 14: Fan, 17: Terrain model.
Claims (2)
置より気体を吐出して、その拡散を試験するようにした
ガス拡散試験方法において、上記模型を固定とし、風路
を回転可能とし、吹く風の方向の時間的分布を予め設定
し、その風の方向時間的分布に基づいて風路を回転させ
るようにしたガス拡散試験方法。(1) A gas diffusion test method in which a terrain model is placed in the wind path of a wind tunnel, and gas is discharged from a fixed position of the model to test its diffusion.The model is fixed and the air path is A gas diffusion test method that is rotatable, the temporal distribution of the blowing wind direction is set in advance, and the wind path is rotated based on the temporal distribution of the wind direction.
置より気体を吐出して、その拡散を試験するようにした
ガス拡散試験方法において、上記模型を固定とし、風路
を回転可能とし、吹く風の方向の時間的分布および風速
を予め設定し、その風の方向時間的分布に基づいて風路
を回転させるとともに、風路内の風速を変化させるよう
にしたガス拡散試験方法。(2) A gas diffusion test method in which a terrain model is placed in the wind path of a wind tunnel, and gas is discharged from a fixed position on the model to test its diffusion.The model is fixed and the air path is A gas diffusion test in which the wind channel is rotatable, the temporal distribution of wind direction and wind speed are set in advance, and the wind channel is rotated based on the temporal distribution of wind direction and the wind speed within the wind channel is changed. Method.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7148385A JPS61230040A (en) | 1985-04-04 | 1985-04-04 | Gas diffusion testing method |
| US06/801,132 US4646564A (en) | 1984-02-19 | 1985-11-21 | Method for testing gas diffusion and apparatus for same |
| EP85730159A EP0184545B1 (en) | 1984-12-04 | 1985-12-03 | Method for testing gas diffusion and apparatus for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7148385A JPS61230040A (en) | 1985-04-04 | 1985-04-04 | Gas diffusion testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61230040A true JPS61230040A (en) | 1986-10-14 |
Family
ID=13461933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7148385A Pending JPS61230040A (en) | 1984-02-19 | 1985-04-04 | Gas diffusion testing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61230040A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748937A (en) * | 2013-12-26 | 2015-07-01 | 中国辐射防护研究院 | Power plant cooling tower thermal plume emission simulation device in environmental wind tunnel |
| CN108692910A (en) * | 2017-03-30 | 2018-10-23 | 波音公司 | Long-range control method and system for activating the boundary layer conversion equipment in wind tunnel model |
-
1985
- 1985-04-04 JP JP7148385A patent/JPS61230040A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748937A (en) * | 2013-12-26 | 2015-07-01 | 中国辐射防护研究院 | Power plant cooling tower thermal plume emission simulation device in environmental wind tunnel |
| CN104748937B (en) * | 2013-12-26 | 2019-08-30 | 中国辐射防护研究院 | The hot plumage emission transaction device of power plant cooling tower in environmental wind tunnel |
| CN108692910A (en) * | 2017-03-30 | 2018-10-23 | 波音公司 | Long-range control method and system for activating the boundary layer conversion equipment in wind tunnel model |
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