JPS5757265A - Method for measuring flow trace speed - Google Patents
Method for measuring flow trace speedInfo
- Publication number
- JPS5757265A JPS5757265A JP13343480A JP13343480A JPS5757265A JP S5757265 A JPS5757265 A JP S5757265A JP 13343480 A JP13343480 A JP 13343480A JP 13343480 A JP13343480 A JP 13343480A JP S5757265 A JPS5757265 A JP S5757265A
- Authority
- JP
- Japan
- Prior art keywords
- light
- intensity
- fine grains
- speed
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/001—Full-field flow measurement, e.g. determining flow velocity and direction in a whole region at the same time, flow visualisation
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
PURPOSE:To measure the speed and the direction even in turbulent flow, by suspending fine grains in fluid, varying the intensity of light from a light source during the exposing time of photographing, and discriminating the starting and terminating points of the traces of the suspended fine grains. CONSTITUTION:The light 12 from the light source 11 is transmitted, through a transmitted light intensity modifier 16, expanded to form a plane shape by a lens 13, and illuminates a flowing place to be measured. The fine grains are suspended in the flowing place, and the flow traces of the grains are photographed by a cemera 15. When the light intensity at the vicinity of the end of exposure is increased than that at the start of the exposure by modifying the intensity of the illuminating light in the exposing time of the camera, the flow trace of the terminating point is photographed more brightly than that at the starting point. Thus the speed and the direction can be measured at the same time, and the measurement can be performed even in the turbulent flow.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13343480A JPS5757265A (en) | 1980-09-25 | 1980-09-25 | Method for measuring flow trace speed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13343480A JPS5757265A (en) | 1980-09-25 | 1980-09-25 | Method for measuring flow trace speed |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5757265A true JPS5757265A (en) | 1982-04-06 |
JPS6138824B2 JPS6138824B2 (en) | 1986-09-01 |
Family
ID=15104678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13343480A Granted JPS5757265A (en) | 1980-09-25 | 1980-09-25 | Method for measuring flow trace speed |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5757265A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0485383A1 (en) * | 1989-03-13 | 1992-05-20 | The Board of Trustees for the University of Illinois | Electro-optical method and system for determining the direction of motion in double-exposure velocimetry by shifting an optical image field |
WO1995001572A1 (en) * | 1993-07-01 | 1995-01-12 | Bodo Ruck | Process and device for generating graphic real-time directional information for detected object tracks |
WO2018193704A1 (en) * | 2017-04-20 | 2018-10-25 | ソニー株式会社 | Signal processing system, signal processing device, and signal processing method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6540261B2 (en) * | 2015-06-18 | 2019-07-10 | 株式会社ジェイテクト | High-speed imaging system and high-speed imaging method |
-
1980
- 1980-09-25 JP JP13343480A patent/JPS5757265A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0485383A1 (en) * | 1989-03-13 | 1992-05-20 | The Board of Trustees for the University of Illinois | Electro-optical method and system for determining the direction of motion in double-exposure velocimetry by shifting an optical image field |
WO1995001572A1 (en) * | 1993-07-01 | 1995-01-12 | Bodo Ruck | Process and device for generating graphic real-time directional information for detected object tracks |
US5812248A (en) * | 1993-07-01 | 1998-09-22 | Tsi Corporation | Process and device for generating graphical real-time directional information for detected object traces |
WO2018193704A1 (en) * | 2017-04-20 | 2018-10-25 | ソニー株式会社 | Signal processing system, signal processing device, and signal processing method |
JPWO2018193704A1 (en) * | 2017-04-20 | 2020-02-27 | ソニー株式会社 | Signal processing system, signal processing device, and signal processing method |
Also Published As
Publication number | Publication date |
---|---|
JPS6138824B2 (en) | 1986-09-01 |
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