JPH01101430A - Method for detecting flow state of air flow on body-installed pedestal - Google Patents
Method for detecting flow state of air flow on body-installed pedestalInfo
- Publication number
- JPH01101430A JPH01101430A JP25830887A JP25830887A JPH01101430A JP H01101430 A JPH01101430 A JP H01101430A JP 25830887 A JP25830887 A JP 25830887A JP 25830887 A JP25830887 A JP 25830887A JP H01101430 A JPH01101430 A JP H01101430A
- Authority
- JP
- Japan
- Prior art keywords
- pedestal
- airflow
- temperature
- air flow
- flow
- 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
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims description 29
- 238000009434 installation Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 206010011878 Deafness Diseases 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (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〕
この発明は、台座上に設置の物体に吹き付けた気流の、
台座上における流れ状況を検出するための方法に関する
ものである。[Detailed Description of the Invention] [Industrial Application Field] This invention is directed to
The present invention relates to a method for detecting flow conditions on a pedestal.
立体構造物の構造解析やビル風の検討、大気汚染の予測
などに際して、水平板等の台座上に設置の物体に気流を
吹き付けたときの台座上における気流の流れ状況番知る
こと、は、極めて重要である。When analyzing the structure of a three-dimensional structure, examining building winds, or predicting air pollution, it is extremely important to know the flow status of the airflow on the pedestal when airflow is blown onto an object installed on the pedestal, such as a horizontal plate. is important.
台座上に設置の円柱等の物体に吹き付けた気流の、台座
上における流れ状況を検出する方法として、従来一般に
用いられている方法には、油膜法および電解腐食法など
がある（朝食書店「流れの可視化ハンドブック」９２頁
以下（油膜法）および１２３頁以下（電解腐食法））。The oil film method and the electrolytic corrosion method are methods that have been commonly used to detect the state of the air flow on the pedestal when it is blown onto an object such as a cylinder installed on the pedestal. ``Visualization Handbook'' (pages 92 and below (oil film method) and pages 123 and below (electrolytic corrosion method)).
油膜法は、円柱等の物体を設置の台座および物体の表面
に油と顔料の混合物（油膜）を塗布して気流等の流れ中
に置き、そのとき油膜に働く流体力の作用によって油膜
に現われる縞、筋状の模様を調べることにより、台座表
面等での流れの状況を検・出する方法である。In the oil film method, a mixture of oil and pigment (oil film) is applied to the pedestal and surface of the object, such as a cylinder, and placed in a stream of air, etc. At that time, an oil film appears due to the action of fluid force acting on the oil film. This is a method of detecting the flow situation on the surface of a pedestal, etc. by examining striped or streaky patterns.
一方、電解腐食法は直接的には水流の流れ状況を検出す
る方法である突、水流での知見を利用して気流の流れ状
況を知ることが行なわれている。On the other hand, the galvanic corrosion method is a method of directly detecting the flow condition of water current, and the knowledge of water flow is used to determine the flow condition of air current.
電解腐食法では、例えば黄銅製の台座および物体の表面
にハンダを溶着したものを水流中に置き、これを陽極と
して使用し水を直流によりミ気分層する。すると、ハン
ダ面上に流線に沿って腐食による筋模様が現われるので
、その筋模様を調べることにより、台座表面等での流れ
の状況を検出するものである。In the electrolytic corrosion method, for example, a brass base and an object with solder welded to the surface are placed in a stream of water, used as an anode, and the water is divided into layers using a direct current. Then, streaks due to corrosion appear on the solder surface along the streamlines, and by examining the streaks, the state of flow on the surface of the pedestal, etc. can be detected.
しかしながら、上記油膜法には次のような問題点がある
。However, the oil film method has the following problems.
（１）油膜の塗布に高度な専門的技術を要し、また結果
の判断にも高度な専門的技術を必要とする。(1) Highly specialized techniques are required to apply the oil film, and highly specialized techniques are also required to judge the results.
また油膜の材質選択などに専門的知識を必要とする。Also, specialized knowledge is required for selecting the material for the oil film.
（２） 一般に気流等の流れに対して油膜に発生する
模様の応答が悪く、検出精度に劣る。(2) In general, the pattern generated on an oil film has a poor response to the flow of air or the like, resulting in poor detection accuracy.
（３）油膜に遠心力が働く場合、重力による影響がある
場合などには、結果にその影響が入り、正確な検出はで
きない。(3) If centrifugal force acts on the oil film, or if there is an influence from gravity, the results will be affected and accurate detection will not be possible.
（４）油による周辺への汚れなどがあシ、検出作業が一
般に面倒である。また、検出作業を繰シ返すような場合
には、油膜の塗布を何回か繰シ返して行なう必要があシ
、この点でも面倒である。(4) Oil can stain the surrounding area, and detection work is generally troublesome. Further, when the detection work is repeated, it is necessary to apply the oil film several times, which is also troublesome.
（５）適用できる流速は１ｍ／秒以上であシ、これより
低速流には適さない。(5) The applicable flow velocity is 1 m/sec or more, and it is not suitable for lower velocity flows.
（６）台座等の表面の仕上げ精度が結果に大きく影響を
与え易いため、注意が必要である。(6) Care must be taken as the finishing accuracy of the surface of the pedestal etc. tends to greatly affect the results.
電解腐食法は上述したように直接的には水流について適
用される方法であるが、次のような問題点がある。As mentioned above, the galvanic corrosion method is a method that is directly applied to water flow, but it has the following problems.
（１）適用できる水流の範囲が０．０１〜０．１ ｍ
／秒の流速のものに誤られている。(1) Applicable water flow range is 0.01 to 0.1 m
It is mistaken for a flow rate of /sec.
（２）水を流し、電気分解を行なうなど検出方法自体が
複雑で、作業が面倒であり、専門的な技術が必要である
。(2) The detection method itself, which involves running water and performing electrolysis, is complicated, laborious, and requires specialized techniques.
（３） 電気分解がＩ・ンダ面表面に一様でなく、流
線に沿ってｉ状に行なわれる理由が充分に解明されてい
ない。(3) The reason why electrolysis is not uniform on the I/D surface but is carried out in an i-shape along the streamlines has not been fully elucidated.
（４）剥離線付近の流速が零になる箇所では１重力の影
響を受は易い。(4) Areas near the separation line where the flow velocity becomes zero are easily affected by 1 gravity.
（５）台座等の表面に溶着したハンダ面をむらなく滑ら
かに仕上げる必要があり、精度の確保が難しく高度の技
術を必要とする。(5) It is necessary to finish the solder surface welded to the surface of the pedestal etc. evenly and smoothly, making it difficult to ensure accuracy and requiring advanced technology.
この発明は、上述の現状に鑑み、台座上に設置の物体に
吹き付けた気流の、台座上における流れ状況を、容易且
つ精度良く検出することができる方法を目的とするもの
である。In view of the above-mentioned current situation, the object of the present invention is to provide a method that can easily and accurately detect the flow condition on the pedestal of the airflow blown onto an object installed on the pedestal.
この発明は、台座上に設置の物体に吹き付けた気流の、
前記台座上における流れ状況を検出する方法において、
前興台座上面と前記気流との間に相対的に温度差を付け
て、前記気流を前□記物体に吹き付ける一方、この状態
下で前記台座上面を赤外線カメラにより撮影し、かくし
て、前記台座上での前記気流の流れ状況を前記台座上面
の赤外線画像上に温度分布として検出することに特徴を
有するものである。This invention is based on the air flow blown onto an object installed on a pedestal.
In the method of detecting the flow condition on the pedestal, a relative temperature difference is created between the upper surface of the pedestal and the airflow, and the airflow is blown onto the object, while under this condition, the upper surface of the pedestal is is photographed by an infrared camera, and the flow condition of the air current on the pedestal is thus detected as a temperature distribution on an infrared image of the upper surface of the pedestal.
以下、この発明の検出方法について詳述する。The detection method of the present invention will be described in detail below.
第１図は、この発明の検出方法の一実施態様を示す説明
図であ、る。FIG. 1 is an explanatory diagram showing one embodiment of the detection method of the present invention.
第１図において、１は物体、２は物体１を設置の台座で
ある。物体ｌは、これに吹き付けた気流３の、台座２上
での流れ状況を検出したい対象物である。物体ｌは、こ
の例では円柱体からなっているが、楕円体、円錐体、角
柱体、球体など、どんな物体、立体、構造物でも可能で
ある。実際の構造物の縮小模型であってもよい。物体１
は、できるだけ熱を伝えにくい材質のものとして、台座
２の上面２ａの温度の影響を材質的にできるだけ受けな
いようにする。物体ｌの材質としては、例えば木材、硬
質ウレタン等が掲げられる。このような物体ｌを台座２
上に所望の姿勢に、例えば図のように直立に設置する。In FIG. 1, 1 is an object, and 2 is a pedestal on which the object 1 is installed. The object 1 is an object on which the flow condition of the airflow 3 blown onto the pedestal 2 is to be detected. Although the object l is a cylinder in this example, it can be any object, solid, or structure, such as an ellipsoid, a cone, a prism, or a sphere. It may be a scaled model of an actual structure. Object 1
is made of a material that conducts heat as little as possible so that it is not affected by the temperature of the upper surface 2a of the pedestal 2 as much as possible. Examples of the material of the object 1 include wood, hard urethane, and the like. Place such an object l on pedestal 2
Place it on top in the desired position, for example upright as shown.
台座２は、物体１の周辺で台座２の形状が小さいことに
よる気流３の流れの乱れ発生がないようにするために、
充分に広い形状としである。台座２の上面２ａは、そこ
での気流３の流れ状況を調べたい表面形状をとっておシ
、この例では水平面になっているが、傾斜面であろうと
、曲面であろうと、凹凸面であろうと可能である。台座
２は、台座２上での気流３の流れ状況を検出し易いよう
にするために、鋼板のような熱伝導率の大きい、熱を伝
え易い材料ではなく、例えばグラスチックのような熱伝
導率の小さい、熱を伝えにくい材料で形成することが好
ましい。The pedestal 2 is designed to prevent turbulence of the airflow 3 around the object 1 due to the small shape of the pedestal 2.
It has a sufficiently wide shape. The upper surface 2a of the pedestal 2 has a surface shape on which you want to examine the flow condition of the airflow 3. Although it is a horizontal surface in this example, it may be an inclined surface, a curved surface, or an uneven surface. It is possible to be deaf. In order to make it easier to detect the flow condition of the airflow 3 on the pedestal 2, the pedestal 2 is made of a heat-conducting material such as glass instead of a material with high thermal conductivity such as a steel plate that easily transmits heat. It is preferable to use a material that has a low heat conductivity and is difficult to conduct heat.
このような台座２の上面２ａの温度を上昇させて、吹き
付ける気流３の温度よシも高くする。その温度上昇手段
は何んでも可能である。この例では、台座２を水平台状
の函体に形成して、台座２の中空部２ｂ内に温水４を注
入し、これによって行なっている。この場合、台座２の
上面２ａの各部で温度差が付くのを防止するため、中空
部２ｂ内に一ング５等を設置して、温水４を流動させる
ことが好ましい。By increasing the temperature of the upper surface 2a of such a pedestal 2, the temperature of the airflow 3 blown is also increased. Any means for increasing the temperature is possible. In this example, the pedestal 2 is formed into a horizontal pedestal-like box, and hot water 4 is injected into the hollow part 2b of the pedestal 2. In this case, in order to prevent temperature differences from forming at various parts of the upper surface 2a of the pedestal 2, it is preferable to install a ring 5 or the like in the hollow part 2b to allow the hot water 4 to flow.
なお、温度上昇手段として台座２外の外部加熱器を用い
て、台座２の上面２ａの一様加熱によ多温度上昇させる
ときには、台座２は面体である必要はなく板体でよい。Note that when an external heater outside the pedestal 2 is used as a temperature raising means to raise the temperature by uniformly heating the upper surface 2a of the pedestal 2, the pedestal 2 does not need to be a face piece and may be a plate.
上面２ａの背面からの温風による一様加熱のときも同様
である。なおまた、一般的ではないが１台座２の上面２
ａの温度を上昇させる代りに、吹き付ける気流３として
上面２ａの温度よシも低いものを用い、これにより気流
３に対して上面２ａの温度を相対的に高いものとするこ
とも可能である。気流３の温度に対する上面２ａの温度
差は、上面２ａを撮影する赤外線カメラ６の温度分解能
や検出精度に与える温度の影響等を考慮して、適宜決定
する。The same applies to the case of uniform heating by hot air from the back side of the upper surface 2a. Furthermore, although it is not common, the upper surface 2 of 1 pedestal 2
Instead of increasing the temperature of the airflow 3, it is also possible to use an airflow 3 that is lower in temperature than the upper surface 2a, thereby making the temperature of the upper surface 2a relatively higher than that of the airflow 3. The temperature difference of the upper surface 2a with respect to the temperature of the airflow 3 is appropriately determined in consideration of the influence of temperature on the temperature resolution and detection accuracy of the infrared camera 6 that photographs the upper surface 2a.
以上のように、気流３に対して台座２の上面２ａの温度
を相対的に高くしたならば、その台座２上の物体１に一
方向から気流３を吹き付ける。気流３を物体１に吹き付
けるには、一般的には風洞を利用し、物体ｌを設置の台
座２を風洞内に収容して行なえばよい。気流３の速度お
よび上下方向の速度分布等は、検出目的に応じて適宜決
定する。As described above, once the temperature of the upper surface 2a of the pedestal 2 is made relatively high with respect to the airflow 3, the airflow 3 is blown onto the object 1 on the pedestal 2 from one direction. In order to blow the airflow 3 onto the object 1, generally a wind tunnel may be used and the object 1 may be placed on the pedestal 2 accommodated in the wind tunnel. The velocity of the airflow 3, the velocity distribution in the vertical direction, etc. are determined as appropriate depending on the purpose of detection.
すると、台座２の上面２ａの、気流３が接触して流れる
領域は、気流３による冷却によって低温となシ、これと
接する気流３が非接触の温度が相対的に高い領域と区別
して、赤外線カメラ６に感知される。従って、この状態
下で台座２の上方の適当な位置から赤外線カメラ６で上
面２ａを撮影すれば、上面２ａ上での気流３の流れ状況
が上面２ａの赤外線画像上に、低温の画像部分と高温の
画像部分とがなす画像模様として検出される。こ、れか
ら、台座２の上面２ａ上での気流３の剥離位置や、その
前方に発生する気流の剥離位置を示す馬蹄形渦の位置、
後方に発生するアーチ渦の位置などが、その画像模様に
おける低温の画像部分と高温の画像部分の境の温度急変
位置として、知ることができる。Then, the area on the upper surface 2a of the pedestal 2 where the airflow 3 comes in contact with and flows through is cooled by the airflow 3 and becomes low temperature, and the airflow 3 in contact with this area is distinguished from the area where the temperature is relatively high without contact, and infrared rays are emitted. It is sensed by camera 6. Therefore, if the upper surface 2a is photographed with the infrared camera 6 from an appropriate position above the pedestal 2 under this condition, the flow condition of the airflow 3 on the upper surface 2a will be shown on the infrared image of the upper surface 2a as a low-temperature image area. It is detected as an image pattern formed by high temperature image parts. From this, the position of the horseshoe-shaped vortex indicating the separation position of the airflow 3 on the upper surface 2a of the pedestal 2 and the separation position of the airflow generated in front of it,
The position of the arch vortex generated in the rear can be known as the position of sudden temperature change at the boundary between the low-temperature image part and the high-temperature image part in the image pattern.
なお、以上の場合、第２図に示すように、物体１を設置
の台座２を９０度傾けて垂直に設置し、台座２の上面２
ａを赤外線カメラ６により側方から撮影することができ
る。この場合、気流３は紙面に垂直方向に物体ｌに吹き
付けられる。In the above case, as shown in FIG. 2, the object 1 is installed vertically with the pedestal 2 tilted 90 degrees,
a can be photographed from the side with an infrared camera 6. In this case, the airflow 3 is blown onto the object l in a direction perpendicular to the plane of the paper.
第１図に示す方法によって気流３の流れ状況を検出した
赤外線画像の１例を、第３図に示す。第３図において、
７は台座２の上面２ａの赤外線画像、′８は上面２ａの
赤外線画像７上に表示された物体１（円柱である）の画
像、９は上面２ａの赤外線画像上に表わ７．れた画像模
様における低温の画像部分、ｌＯは同じく、高温の画像
部分、１１はこれら画像部分９，１００境の温度急変位
置のラインである。気流３は第３図に示す′位置関係に
おいて左方向から物体ｌに吹き付けられている。FIG. 3 shows an example of an infrared image obtained by detecting the flow condition of the airflow 3 by the method shown in FIG. 1. In Figure 3,
7 is an infrared image of the upper surface 2a of the pedestal 2, '8 is an image of the object 1 (which is a cylinder) displayed on the infrared image 7 of the upper surface 2a, and 9 is an infrared image displayed on the infrared image of the upper surface 2a. Similarly, 10 is a low-temperature image portion in the image pattern, and 11 is a line at a temperature sudden change position between these image portions 9,100. The airflow 3 is blown onto the object l from the left in the positional relationship shown in FIG.
上記の赤外線画像７上の温度急変位置のライン１１は、
物体ｌの前方から物体１を取シ巻いて後方に延びている
が、このライン１１が台座２の上面２・ａ上での気流３
の剥離位置であシ、赤外線画像７から気流３の剥離位置
を知ることができることが判る。なお、低温、高温の画
像部分９，１０は、気流３の風下方向に行くに従って、
その表示温度の差が徐々に小さくなるので、温度急変位
置は不明確になる。また、気流３の風下方向上では気流
３の速度等の関係によって、赤外線画像７上に馬蹄形渦
などの画像模様が表われる。The line 11 of the temperature sudden change position on the above infrared image 7 is
The line 11 extends from the front of the object 1 to the rear, wrapping around the object 1, and this line 11 is the airflow 3 on the upper surface 2.a of the pedestal 2.
It can be seen that the separation position of the airflow 3 can be determined from the infrared image 7. It should be noted that the image parts 9 and 10 of low temperature and high temperature change as they go downwind of the airflow 3
As the difference in the displayed temperatures gradually decreases, the location of the sudden temperature change becomes unclear. Further, in the leeward direction of the airflow 3, an image pattern such as a horseshoe-shaped vortex appears on the infrared image 7 depending on the speed of the airflow 3, etc.
以上の実施態様では、気流３に対して台座２の上面２ａ
の温度を相対的に高くして、気流３を台座２上に設置の
物体ｌに吹き付けた場合を例にとって説明したが、この
発明はこれに限られ”ず、気流３に対して台座２の上面
２ａの温度を相対的に低くして、気流３を物体１に吹き
付けてもよい。In the above embodiment, the upper surface 2a of the pedestal 2 is
The explanation has been given by taking as an example a case in which the temperature of the airflow 3 is made relatively high and the airflow 3 is blown onto the object l installed on the pedestal 2, but the present invention is not limited to this. The airflow 3 may be blown onto the object 1 while keeping the temperature of the upper surface 2a relatively low.
気流３に対して台座２の上面２ａの温度を相対的に低く
するためには１台座２の中空部２ｂ内に気流３よりも温
度の低い冷水を注入したシ、台座２外の外部の冷却器に
より上面２ａを冷却する方法が採れ、また気流３として
上面２ａよシも温度の高いもΦを用いる方法を採ること
もできる。気流３に対して台座２の上面２ａの温度を相
対的に低くして気流３を物体１に吹き付けた場合には、
上面２ａの気流３が接触して流れる領域および非接触で
流れる領域の温度は上述したのとは高低が逆になるが、
同様に、上面２ａの赤外線画像上にそれらの領域の画像
部分がなす画像模様として、上面２ａ上での気流３の流
れ状況が検出される。In order to lower the temperature of the upper surface 2a of the pedestal 2 relative to the airflow 3, 1) Inject cold water with a lower temperature than the airflow 3 into the hollow part 2b of the pedestal 2, and cool the outside of the pedestal 2. A method can be adopted in which the upper surface 2a is cooled by a container, and a method can also be adopted in which the upper surface 2a has a higher temperature than the upper surface 2a as the air flow 3. When the temperature of the upper surface 2a of the pedestal 2 is made relatively lower than the airflow 3 and the airflow 3 is blown onto the object 1,
The temperature of the region where the airflow 3 flows in contact with the upper surface 2a and the region where it flows without contact is opposite in height to that described above,
Similarly, the flow condition of the airflow 3 on the upper surface 2a is detected as an image pattern formed by the image portions of those regions on the infrared image of the upper surface 2a.
この発明は以上のように構成されるので、次のような効
果を有する。Since the present invention is configured as described above, it has the following effects.
（１）台座上に設置の種々の対象物体に吹き付けた気流
の、台座上における流れ状況を台座上面の赤外線画像上
に、容易に検出することができ１台座上での気流の剥離
位置や馬蹄形渦、アーチ渦等の位置を、赤外線画像上の
温度急変位置として、極めて容易且つ明確に知ることが
できる。これらの位置の特定は素人にも可能で、専門的
判断をほとんど必要としない。(1) The flow conditions on the pedestal of the airflow blown onto various target objects installed on the pedestal can be easily detected on the infrared image on the top surface of the pedestal, and the separation position of the airflow on the pedestal and the horseshoe shape can be easily detected. The positions of vortices, arch vortices, etc. can be known very easily and clearly as positions of sudden temperature changes on an infrared image. Identifying these positions is possible even for amateurs and requires little professional judgment.
（２）検出方法そのものが特に高度な技術や特殊な機器
を必要、とせず、誰れでも容易に流れ状況の検出ができ
る。(2) The detection method itself does not require particularly advanced technology or special equipment, and anyone can easily detect the flow situation.
（３） 対象物体の形状や台座上面の形状によらずに
、同じ方法で対応できる。例えば任意の形状の物体が不
陸のある凹凸した台座上にある場合でも。(3) The same method can be used regardless of the shape of the target object or the shape of the top surface of the pedestal. For example, even if an object of arbitrary shape is placed on an uneven pedestal.
、全く同じ方法で台座上での気流の流れ状況を検出する
ことができる。従って、山など起伏のある地盤上にある
構造物廻シの地盤付近の風の分布状況や、街中のピルに
囲まれた地上の風の分布状況の調査などにも利用できる
。, the airflow situation on the pedestal can be detected in exactly the same way. Therefore, it can also be used to investigate the distribution of wind near the ground of structures located on uneven ground such as mountains, and the distribution of wind on the ground surrounded by pillars in the city.
（４）結果を赤外線カメラの付属装置によりビデオテー
プやフロッピーデスクなどに直接画像として記録でき、
結果が判）易い。(4) The results can be recorded directly as an image on a videotape or floppy disk using an attached device of the infrared camera.
The results are easy to understand.
（５）その他、従来技術の問題点がほとんど解決できる
他、赤外線カメラでの撮影による検出の特長、例えば非
接触、遠隔での検出などが生かせる。(5) In addition to solving most of the problems of the prior art, the advantages of detection by photographing with an infrared camera, such as non-contact and remote detection, can be utilized.
第１図は、この発明の検出方法の一実施態様を示す説明
図、ＷＥ２図は、この発明の検出方法での撮影方向の他
−の例を示す説明図、！３図は、第１図の方法で気流の
流れ状況を検出した赤外線画像の１例を模式的に示す平
面図である。図面におりて、
１・・・物体、 ２・・・台座。
２ａ・・・上面、 ３・・・気流。
４・・・温水、 ６・・・赤外線カメラ、７
・・・上面の赤外線画像、８・・・物体の画像、９・・
・低温の画像部分、ｌＯ・・・高温の画像部分。
１１・・・温度急変位置のライン。
夛１図
第２図FIG. 1 is an explanatory diagram showing one embodiment of the detection method of the present invention, and FIG. WE2 is an explanatory diagram showing another example of the photographing direction in the detection method of the present invention. FIG. 3 is a plan view schematically showing an example of an infrared image obtained by detecting the airflow state using the method shown in FIG. In the drawing, 1...object, 2...pedestal. 2a...Top surface, 3...Airflow. 4...Hot water, 6...Infrared camera, 7
... Infrared image of the top surface, 8... Image of object, 9...
・Low temperature image area, lO...high temperature image area. 11...Line at the position of sudden temperature change. Figure 1 Figure 2
Claims (1)
における流れ状況を検出する方法において、前記台座上
面と前記気流との間に相対的に温度差を付けて、前記気
流を前記物体に吹き付ける一方、この状態下で前記台座
上面を赤外線カメラにより撮影し、かくして、前記台座
上での前記気流の流れ状況を前記台座上面の赤外線画像
上に温度分布として検出することを特徴とする、物体設
置の台座上での気流の流れ状況検出方法。In the method for detecting the flow condition on the pedestal of an airflow blown onto an object installed on the pedestal, the airflow is blown onto the object while creating a relative temperature difference between the upper surface of the pedestal and the airflow. On the other hand, the object installation is characterized in that the top surface of the pedestal is photographed by an infrared camera under this condition, and thus the flow condition of the air current on the pedestal is detected as a temperature distribution on the infrared image of the top surface of the pedestal. A method for detecting airflow conditions on a pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25830887A JPH01101430A (en) | 1987-10-15 | 1987-10-15 | Method for detecting flow state of air flow on body-installed pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25830887A JPH01101430A (en) | 1987-10-15 | 1987-10-15 | Method for detecting flow state of air flow on body-installed pedestal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01101430A true JPH01101430A (en) | 1989-04-19 |
Family
ID=17318447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25830887A Pending JPH01101430A (en) | 1987-10-15 | 1987-10-15 | Method for detecting flow state of air flow on body-installed pedestal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01101430A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6327766A (en) * | 1986-07-22 | 1988-02-05 | Mitsui Eng & Shipbuild Co Ltd | Visualizing apparatus for flow of fluid |
-
1987
- 1987-10-15 JP JP25830887A patent/JPH01101430A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6327766A (en) * | 1986-07-22 | 1988-02-05 | Mitsui Eng & Shipbuild Co Ltd | Visualizing apparatus for flow of fluid |
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