JPS5884406U - Perforated plate for boundary layer reduction - Google Patents
Perforated plate for boundary layer reductionInfo
- Publication number
- JPS5884406U JPS5884406U JP17944781U JP17944781U JPS5884406U JP S5884406 U JPS5884406 U JP S5884406U JP 17944781 U JP17944781 U JP 17944781U JP 17944781 U JP17944781 U JP 17944781U JP S5884406 U JPS5884406 U JP S5884406U
- Authority
- JP
- Japan
- Prior art keywords
- boundary layer
- perforated plate
- air passage
- layer reduction
- reduction
- 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
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は公知の風洞の境界層低減用多孔板を示す縦断面
図、第２図は第１図の部分拡大図、第３図は本考案の一
実施例を示す部分縦断面図、第４図は輌３図による境界
層低減効果を示す線図である。
２・・・多孔板、ｄ・・・孔径、ｔ・・・板厚、Ｒ・・
・曲率半径、σｍａｘ・・・入口境界層の厚み、σＳ・
・・出口境界層の厚み。FIG. 1 is a longitudinal cross-sectional view showing a known perforated plate for reducing the boundary layer of a wind tunnel, FIG. 2 is a partially enlarged view of FIG. 1, and FIG. 3 is a partial longitudinal cross-sectional view showing an embodiment of the present invention. Figure 4 is a diagram showing the boundary layer reduction effect according to Figure 3 of the vehicle. 2... Porous plate, d... Hole diameter, t... Plate thickness, R...
・Radius of curvature, σmax... Thickness of inlet boundary layer, σS・
...Thickness of the exit boundary layer.
Claims (1)
数の小孔を通して吸引し風路内の境界層を低減するよう
にした多孔板において、上記複数の小孔の上記風路に面
した開口縁に直線又は曲線の面取りを施したことを特徴
とする境界層低減用多孔板。In a perforated plate disposed on a wall surface forming an air passage of a wind tunnel, the fluid in the air passage is sucked through a plurality of small holes to reduce a boundary layer within the air passage. 1. A perforated plate for reducing boundary layer, characterized in that the edge of the opening facing the is chamfered in a straight line or in a curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17944781U JPS5884406U (en) | 1981-12-03 | 1981-12-03 | Perforated plate for boundary layer reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17944781U JPS5884406U (en) | 1981-12-03 | 1981-12-03 | Perforated plate for boundary layer reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5884406U true JPS5884406U (en) | 1983-06-08 |
Family
ID=29975151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17944781U Pending JPS5884406U (en) | 1981-12-03 | 1981-12-03 | Perforated plate for boundary layer reduction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5884406U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207729A (en) * | 2011-03-30 | 2012-10-25 | Mitsubishi Heavy Ind Ltd | Diffuser |
| JP2016200505A (en) * | 2015-04-10 | 2016-12-01 | 三菱重工メカトロシステムズ株式会社 | Boundary layer control device and wind tunnel test device using the same |
| JP2020046401A (en) * | 2018-09-21 | 2020-03-26 | 三菱重工業株式会社 | Boundary layer control device and wind tunnel testing apparatus |
-
1981
- 1981-12-03 JP JP17944781U patent/JPS5884406U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207729A (en) * | 2011-03-30 | 2012-10-25 | Mitsubishi Heavy Ind Ltd | Diffuser |
| JP2016200505A (en) * | 2015-04-10 | 2016-12-01 | 三菱重工メカトロシステムズ株式会社 | Boundary layer control device and wind tunnel test device using the same |
| JP2020046401A (en) * | 2018-09-21 | 2020-03-26 | 三菱重工業株式会社 | Boundary layer control device and wind tunnel testing apparatus |
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