GB1407423A - Optical apparatus for measurement for velocity and local turbulence in a fluid flow - Google Patents

Optical apparatus for measurement for velocity and local turbulence in a fluid flow

Info

Publication number
GB1407423A
GB1407423A GB4563272A GB4563272A GB1407423A GB 1407423 A GB1407423 A GB 1407423A GB 4563272 A GB4563272 A GB 4563272A GB 4563272 A GB4563272 A GB 4563272A GB 1407423 A GB1407423 A GB 1407423A
Authority
GB
United Kingdom
Prior art keywords
velocity
measurement
oct
photo
fluid 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.)
Expired
Application number
GB4563272A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GRENOBLOISE DETUDES ET DAPPLIC
Original Assignee
GRENOBLOISE DETUDES ET DAPPLIC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GRENOBLOISE DETUDES ET DAPPLIC filed Critical GRENOBLOISE DETUDES ET DAPPLIC
Publication of GB1407423A publication Critical patent/GB1407423A/en
Expired legal-status Critical Current

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
    • G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1407423 Monitoring fluid-flow photoelectrically SOC GRENOBLOISE D ETUDES ET D APPLICATIONS HYDRAULIQUES 3 Oct 1972 [5 Oct 1971] 45632/72 Heading G1A [Also in Division H4] To measure the velocity of a flowing medium a monochromatic light beam is projected along a probe 1, focused at a point 3 in the liquid and backscattered light 4c is combined at a photo-cell 5 with reference beam 4a to provide an output whose Doppler frequency shift is indicative of the flow velocity. The mirror arrangement may be replaced by optical fibre(s). A further embodiment Figs. 2, 3 (not shown) directs light scattered in three directions on to three photo-cells so as to determine three velocity components and/or turbulence conditions.
GB4563272A 1971-10-05 1972-10-03 Optical apparatus for measurement for velocity and local turbulence in a fluid flow Expired GB1407423A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7136866A FR2155898B1 (en) 1971-10-05 1971-10-05

Publications (1)

Publication Number Publication Date
GB1407423A true GB1407423A (en) 1975-09-24

Family

ID=9084338

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4563272A Expired GB1407423A (en) 1971-10-05 1972-10-03 Optical apparatus for measurement for velocity and local turbulence in a fluid flow

Country Status (4)

Country Link
CH (1) CH561424A5 (en)
DE (1) DE2248864A1 (en)
FR (1) FR2155898B1 (en)
GB (1) GB1407423A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2344023A1 (en) * 1976-03-12 1977-10-07 Alsthom Cgee OPTICAL PROBE FOR THE MEASUREMENT OF SPEEDS IN A FLOW

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349762A (en) * 1964-10-21 1967-10-31 Optics Technology Inc Blood flow indicator and process
US3511227A (en) * 1967-02-27 1970-05-12 Univ Utah Measurement of blood flow using coherent radiation and doppler effect
US3532427A (en) * 1969-04-22 1970-10-06 T O Paine Laser doppler system for measuring three dimensional vector velocity

Also Published As

Publication number Publication date
FR2155898B1 (en) 1975-08-22
DE2248864A1 (en) 1973-04-12
FR2155898A1 (en) 1973-05-25
CH561424A5 (en) 1975-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee