JPH09229815A - High speed body tester - Google Patents
High speed body testerInfo
- Publication number
- JPH09229815A JPH09229815A JP3351096A JP3351096A JPH09229815A JP H09229815 A JPH09229815 A JP H09229815A JP 3351096 A JP3351096 A JP 3351096A JP 3351096 A JP3351096 A JP 3351096A JP H09229815 A JPH09229815 A JP H09229815A
- Authority
- JP
- Japan
- Prior art keywords
- model
- test
- speed
- tunnel
- phenomenon
- 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.)
- Granted
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、高速体、例えばリ
ニヤモータカー、新幹線等の高速列車のトンネル突入後
の空力現象のシミュレーションに適用する高速体試験装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed body test apparatus applied to a simulation of an aerodynamic phenomenon of a high-speed body such as a linear motor car and a high-speed train after entering a tunnel of a high-speed train.
【０００２】[0002]
【従来の技術】従来の高速体試験装置を図４により説明
すると、０１がトンネル模型で、同トンネル模型０１に
は、変形のない剛性体モデルが使用されている。０２が
試験体模型（列車モデル）で、高圧空気を発射する発射
装置（図示せず）から高圧空気を発射し、試験体模型０
２を実際の列車と同等の高速度（８０〜１４０ｍ／ｓ）
で軌道モデル０３上を走行させて、トンネル模型０１内
へ突入させるようにしている。2. Description of the Related Art A conventional high-speed body testing apparatus will be described with reference to FIG. 4, in which 01 is a tunnel model, and a rigid body model without deformation is used for the tunnel model 01. Reference numeral 02 is a test model (train model), which emits high-pressure air from a launching device (not shown) that emits high-pressure air.
2 is the same high speed as an actual train (80 to 140 m / s)
The vehicle is made to run on the track model 03 so as to enter the tunnel model 01.
【０００３】[0003]
【発明が解決しようとする課題】前記図４に示す従来の
高速体試験装置では、発射装置から高圧空気を発射する
ので、発射装置が複雑な装置になって、費用がかかる。
また高速体、例えばリニヤモータカー、新幹線等の高速
列車がトンネルを走行する場合、動的風圧力による車
体強度の問題、車体浮き上がりの問題、圧力波によ
る衝撃音の問題等があるが、これらの現象を解明して、
対策を十分に検証する手段がない。In the conventional high-speed body test apparatus shown in FIG. 4, high-pressure air is emitted from the launching device, so that the launching device becomes a complicated device and is expensive.
In addition, when a high-speed body, such as a linear motor car or a high-speed train such as the Shinkansen, travels in a tunnel, there are problems such as body strength due to dynamic wind pressure, body lifting, and impact noise due to pressure waves. Elucidating
There is no means to fully verify the measures.
【０００４】本発明は前記の問題点に鑑み提案するもの
であり、その目的とする処は、大幅に低速化した試験に
より高速現象をシミュレーションできて、現象の解明や
対策の検証を容易に行うことができる高速体試験装置を
提供しようとする点にある。The present invention is proposed in view of the above-mentioned problems, and the purpose thereof is to simulate a high-speed phenomenon by a test with a significantly reduced speed, and to easily clarify the phenomenon and verify countermeasures. The point is to provide a high-speed body test apparatus that can perform such a test.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の高速体試験装置は、試験体模型と、同試
験体模型の内部若しくは外部において同試験体模型に推
力を発生させる推力発生手段と、音速を低下させる弾性
体により製作されたトンネル模型とよりなり、上記試験
体模型が上記トンネル模型を通過するときの空力現象を
測定することを特徴としている（請求項１） 前記高速体試験装置において、トンネル模型の弾性体を
目標とする音速の低下率になるように選定してもよい
（請求項２）。In order to achieve the above-mentioned object, the high-speed body test apparatus of the present invention generates a thrust on the test body model and inside or outside the test body model. It is characterized by comprising a thrust generating means and a tunnel model made of an elastic body that lowers the speed of sound, and measures an aerodynamic phenomenon when the test model passes through the tunnel model (claim 1). In the high-speed body testing device, the elastic body of the tunnel model may be selected so as to have a target sound velocity reduction rate (claim 2).
【０００６】[0006]
【発明の実施の形態】次に本発明の高速体試験装置を図
１〜図３に示す一実施形態により説明する。図１は高速
体試験装置を示す斜視図、図２はトンネル模型の弾性体
にゴムシートを使用した場合の空気中試験での音速とト
ンネル材厚みとの関係を示す説明図、図３はトンネル模
型の弾性体にゴムシートを使用した場合の水中試験での
音速とトンネル材厚みとの関係を示す説明図である。BEST MODE FOR CARRYING OUT THE INVENTION Next, a high-speed body test apparatus of the present invention will be described with reference to an embodiment shown in FIGS. FIG. 1 is a perspective view showing a high-speed body testing device, FIG. 2 is an explanatory view showing a relationship between a sound velocity and a tunnel material thickness in an air test when a rubber sheet is used as an elastic body of a tunnel model, and FIG. 3 is a tunnel. It is explanatory drawing which shows the relationship between the sound speed and tunnel material thickness in an underwater test when a rubber sheet is used for the elastic body of a model.
【０００７】図１の１が音速を低下させる弾性体により
製作されたトンネル模型で、同トンネル模型１は、複数
のフレームリング１−２と同各フレームリング１−２を
連結するリブ１−３とによりフレームが作られ、このフ
レームに弾性体１−１が張付けられて構成されている。
２が試験体模型（列車モデル）、３が軌道モデルで、試
験体模型２は、牽引するか、モータ、エンジン等の動力
により自走させるかして、軌道モデル３上を走行させ
る。これが試験体模型２の内部若しくは外部において同
試験体模型２に推力を発生させる推力発生手段に相当し
ている。Reference numeral 1 in FIG. 1 is a tunnel model made of an elastic body that lowers the speed of sound. The tunnel model 1 includes a plurality of frame rings 1-2 and ribs 1-3 connecting the respective frame rings 1-2. A frame is made by and the elastic body 1-1 is attached to the frame.
Reference numeral 2 is a test model (train model), 3 is a track model, and the test model 2 is run on the track model 3 by being towed or self-propelled by power such as a motor and an engine. This corresponds to thrust generating means for generating thrust in the test body model 2 inside or outside the test body model 2.
【０００８】次に前記図１に示す高速体試験装置の作用
を具体的に説明する。トンネル模型１内の音速を低下さ
せるために、伸縮可能な弾性体１−１により製作された
トンネル模型１を使用しており、弾性体１−１の半径方
向への伸縮によりトンネル模型１内の体積弾性係数を低
下させて、音速を大幅に低下させ、これに対応して試験
体模型２の速度を低下させて、この低速度試験により高
速度現象を近似的に再現させる。Next, the operation of the high-speed body test apparatus shown in FIG. 1 will be specifically described. In order to reduce the sound velocity in the tunnel model 1, the tunnel model 1 made of a stretchable elastic body 1-1 is used. The bulk elastic coefficient is lowered, the sound velocity is drastically lowered, and the velocity of the test body model 2 is lowered correspondingly, and the high velocity phenomenon is approximately reproduced by the low velocity test.
【０００９】上記の作用を図２、図３によりさらに詳細
に説明する。弾性体１−１により製作されたトンネル模
型１内の音速は、次式により表される。The above operation will be described in more detail with reference to FIGS. The sound velocity in the tunnel model 1 produced by the elastic body 1-1 is expressed by the following equation.
【００１０】[0010]
【数１】 弾性体１−１にＥ＝２×１０6 Ｐａのゴムシートを使用
した場合、トンネル模型１内の音速をδ／Ｄに対して求
めると、図２のようになる。ここで、Ｋ0 ＝１．４×１
０5 Ｐａ、ρ＝１．２kg/m3 を用いた。図２の例から例
えばδ／Ｄ＝１／１０００の弾性体を用いると、音速
は、図２の点線矢印のように４０ｍ／ｓになる。[Equation 1] When a rubber sheet of E = 2 × 10 6 Pa is used for the elastic body 1-1, the sound velocity in the tunnel model 1 is calculated with respect to δ / D, as shown in FIG. Where K 0 = 1.4 × 1
0 5 Pa and ρ = 1.2 kg / m 3 were used. If an elastic body of δ / D = 1/1000 is used from the example of FIG. 2, the sound velocity becomes 40 m / s as indicated by the dotted arrow in FIG.
【００１１】実車での音速は、約３４０ｍ／ｓであるの
で、トンネル模型１内の音速は、実車の約１／８．５で
ある。従って試験体模型２と実車とでマッハ数を合わせ
ると、試験体模型（モデル列車）２の速度を実車の約１
／８．５程度に低速化できて、試験体模型２は、９〜１
６ｍ／ｓの低速になる。この程度の速度試験は、容易で
あり、試験体模型２も大型化できて、実際の形状を細部
迄再現できる。Since the speed of sound in the actual vehicle is about 340 m / s, the speed of sound in the tunnel model 1 is about 1 / 8.5 of that of the actual vehicle. Therefore, if the Mach numbers of the test body model 2 and the actual vehicle are matched, the speed of the test body model (model train) 2 is about 1 of that of the actual vehicle.
/ It can be slowed down to about 8.5, and the test model 2 has 9 to 1
It becomes a low speed of 6 m / s. The speed test of this degree is easy, the test model 2 can be enlarged, and the actual shape can be reproduced in detail.
【００１２】以上は、モデル試験を空気中で実施する場
合であるが、モデル試験を水中で実施する場合にも、同
じ要領で行うことができる。図３は、弾性体１−１によ
り製作されたトンネル模型１を水中に浸した場合のトン
ネル模型１内の音速を示している。空気の場合と同様
に、δ／Ｄ＝１／１０００の弾性体を用いると、音速
は、１．４ｍ／ｓになる。従って水中試験では、試験体
模型（モデル列車）２の速度を１．４／３４０＝１／２
４３に低速化できて、実車速度８０〜１４０ｍ／ｓを
０．３〜０．６ｍ／ｓの低速で試験でき、この大幅に低
速化した試験により高速現象をシミュレーションでき
て、現象の解明や対策の検証を容易に行うことができ
る。The above is the case where the model test is carried out in air, but the model test can also be carried out in water in the same manner. FIG. 3 shows the speed of sound in the tunnel model 1 when the tunnel model 1 made of the elastic body 1-1 is immersed in water. Similar to the case of air, when an elastic body with δ / D = 1/1000 is used, the sound velocity becomes 1.4 m / s. Therefore, in the underwater test, the speed of the test model 2 (model train) is 1.4 / 340 = 1/2.
The speed can be reduced to 43, and the actual vehicle speed of 80 to 140 m / s can be tested at a low speed of 0.3 to 0.6 m / s. High speed phenomena can be simulated by this greatly reduced speed test, and the phenomena can be elucidated and countermeasures taken. Can be easily verified.
【００１３】[0013]
【発明の効果】本発明の高速体試験装置は前記のように
試験体模型と、同試験体模型の内部若しくは外部におい
て同試験体模型に推力を発生させる推力発生手段と、弾
性体により製作されたトンネル模型とにより構成してお
り、トンネル模型の弾性体の半径方向への伸縮によりト
ンネル模型内の体積弾性係数を低下させて、音速を大幅
に低下させることができ、これに対応して試験体模型の
速度を低下させることができて、この低速度試験により
高速度現象を近似的に再現させることができる。つまり
この大幅に低速化した試験により高速現象をシミュレー
ションできて、現象の解明や対策の検証を容易に行うこ
とができるる。As described above, the high speed body testing apparatus of the present invention is made of the test body model, the thrust generating means for generating a thrust force in the test body model inside or outside the test body model, and the elastic body. And the tunnel model, the elastic body of the tunnel model expands and contracts in the radial direction to reduce the bulk modulus of elasticity in the tunnel model, which can significantly reduce the speed of sound. The speed of the body model can be reduced, and this low speed test can approximately reproduce the high speed phenomenon. In other words, this drastically slowed down test allows simulation of high-speed phenomena, making it easy to clarify phenomena and verify countermeasures.
【図１】本発明の高速体試験装置の一実施形態を示す斜
視図である。FIG. 1 is a perspective view showing an embodiment of a high-speed body testing device of the present invention.
【図２】トンネル模型の弾性体にゴムシートを使用した
場合の空気中試験での音速とトンネル材厚みとの関係を
示す説明図である。FIG. 2 is an explanatory diagram showing a relationship between a sound velocity and a tunnel material thickness in an air test when a rubber sheet is used as an elastic body of a tunnel model.
【図３】トンネル模型の弾性体にゴムシートを使用した
場合の水中試験での音速とトンネル材厚みとの関係を示
す説明図である。FIG. 3 is an explanatory diagram showing the relationship between the sound velocity and the tunnel material thickness in an underwater test when a rubber sheet is used as the elastic body of the tunnel model.
【図４】従来の高速体試験装置を示す斜視図である。FIG. 4 is a perspective view showing a conventional high-speed body testing device.
１ トンネル模型 １−１ 弾性体 １−２ フレームリング １−３ リブ ２ 試験体模型（例えば列車モデル） ３ 軌道モデル 1 Tunnel model 1-1 Elastic body 1-2 Frame ring 1-3 Rib 2 Specimen model (for example, train model) 3 Track model
Claims (2)
くは外部において同試験体模型に推力を発生させる推力
発生手段と、音速を低下させる弾性体により製作された
トンネル模型とよりなり、上記試験体模型が上記トンネ
ル模型を通過するときの空力現象を測定することを特徴
とした高速体試験装置。1. A test model, comprising: a thrust model generating means for generating a thrust in the model inside or outside the model; and a tunnel model made of an elastic body for reducing the speed of sound. A high-speed body testing device characterized by measuring an aerodynamic phenomenon when a test model passes through the tunnel model.
音速の低下率になるように選定した請求項１記載の高速
体試験装置。2. The high-speed body testing device according to claim 1, wherein the elastic body of the tunnel model is selected so as to have a target sound velocity decrease rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03351096A JP3272593B2 (en) | 1996-02-21 | 1996-02-21 | High-speed body test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03351096A JP3272593B2 (en) | 1996-02-21 | 1996-02-21 | High-speed body test equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09229815A true JPH09229815A (en) | 1997-09-05 |
| JP3272593B2 JP3272593B2 (en) | 2002-04-08 |
Family
ID=12388550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03351096A Expired - Fee Related JP3272593B2 (en) | 1996-02-21 | 1996-02-21 | High-speed body test equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3272593B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101476A (en) * | 2014-06-06 | 2014-10-15 | 华南理工大学 | Device used for measuring tail negative pressure of a transport carriage body model and test method thereof |
| CN104155079A (en) * | 2014-08-06 | 2014-11-19 | 山东大学 | Fluid-flow analog device and method for water bursting and mud emerging model test of tunnel |
| CN109030033A (en) * | 2018-06-21 | 2018-12-18 | 浙江大学城市学院 | A kind of experimental rig for simulating two-wire Subway Train Operation in Existed Subway operating condition |
| CN109489999A (en) * | 2018-11-23 | 2019-03-19 | 淮阴工学院 | A kind of train pneumatic performance simulation model test apparatus and its test method |
-
1996
- 1996-02-21 JP JP03351096A patent/JP3272593B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101476A (en) * | 2014-06-06 | 2014-10-15 | 华南理工大学 | Device used for measuring tail negative pressure of a transport carriage body model and test method thereof |
| CN104155079A (en) * | 2014-08-06 | 2014-11-19 | 山东大学 | Fluid-flow analog device and method for water bursting and mud emerging model test of tunnel |
| CN109030033A (en) * | 2018-06-21 | 2018-12-18 | 浙江大学城市学院 | A kind of experimental rig for simulating two-wire Subway Train Operation in Existed Subway operating condition |
| CN109489999A (en) * | 2018-11-23 | 2019-03-19 | 淮阴工学院 | A kind of train pneumatic performance simulation model test apparatus and its test method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3272593B2 (en) | 2002-04-08 |
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