GB683865A - Improvements in or relating to fluid mixing device - Google Patents
Improvements in or relating to fluid mixing deviceInfo
- Publication number
- GB683865A GB683865A GB937651A GB937651A GB683865A GB 683865 A GB683865 A GB 683865A GB 937651 A GB937651 A GB 937651A GB 937651 A GB937651 A GB 937651A GB 683865 A GB683865 A GB 683865A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vortices
- boundary layer
- main stream
- aerofoils
- separation
- 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.)
- Expired
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
- G01M9/02—Wind tunnels
- G01M9/04—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
- F04F5/463—Arrangements of nozzles with provisions for mixing
Abstract
683,865. Boundary layer control in wind-tunnels and diffusers. UNITED AIRCRAFT CORPORATION. April 23, 1951. No. 9376/51. Class 4. The boundary layer of a fluid passing through a passage, such as a wind-tunnel or diffuser, is energized by vortices which promote mixing of the main stream with the boundary layer, such vortices being generated by members mounted on the wall of the passage and projecting into the main stream. The generators may consist of small aerofoil-shaped members 12, their tips, at which the vortices are produced, being located in the surface of separation between the main stream and the boundary layer. The aerofoils are mounted in circumferential rows and may all be arranged at the same angle of incidence to the main stream to produce vortices rotating in the same direction, Figs. 2 and 3, or preferably are arranged alternately at positive and negative angles of incidence to produce counter-rotating vortices, Figs. 5 and 6. In the case of a single row of aerofoils they are located at the separation zone. Fig. 9 shows an arrangement with three rows of aerofoils 12a, 12c, 12e of decreasing length in the downstream direction, the tips of the rearmost ring 12a being in the surface of separation between the main stream and the boundary layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB937651A GB683865A (en) | 1951-04-23 | 1951-04-23 | Improvements in or relating to fluid mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB937651A GB683865A (en) | 1951-04-23 | 1951-04-23 | Improvements in or relating to fluid mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB683865A true GB683865A (en) | 1952-12-03 |
Family
ID=9870775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB937651A Expired GB683865A (en) | 1951-04-23 | 1951-04-23 | Improvements in or relating to fluid mixing device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB683865A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008046389A1 (en) * | 2006-10-17 | 2008-04-24 | Mtu Aero Engines Gmbh | Assembly for influencing a flow by means of geometries influencing the boundary layer |
| CN116242576A (en) * | 2023-05-11 | 2023-06-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Floor suitable for open wind tunnel with floor test and open wind tunnel with floor |
-
1951
- 1951-04-23 GB GB937651A patent/GB683865A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008046389A1 (en) * | 2006-10-17 | 2008-04-24 | Mtu Aero Engines Gmbh | Assembly for influencing a flow by means of geometries influencing the boundary layer |
| CN116242576A (en) * | 2023-05-11 | 2023-06-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Floor suitable for open wind tunnel with floor test and open wind tunnel with floor |
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