Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[Clinical investigation of burn wound infection with type I herpes simplex virus].

Zhonghua shao shang za zhi = Zhonghua shaoshang zazhi = Chinese journal of burns·2002
Same author

[An epidemiological study on the incidence rates of colorectal cancer through different drinking water sources].

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi·2002
Same author

[Randomized controlled trial of sequence mass screening program for colorectal cancer].

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi·2002
Same author

[Drinking water types, microcystins and colorectal cancer].

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]·2002
Same author

[A study on family aggregation of type 2 diabetes mellitus].

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]·2002
Same author

Elevation of lactic acid concentration associated with megalophthalmia in Black Moor goldfish.

Experimental eye research·2002

Related Experiment Video

Updated: Jul 7, 2026

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
08:54

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

Flow-velocity measurements with a laser diode array.

M Azzazy, R L Potts, L Zhou

    Applied Optics
    |April 20, 1997
    PubMed
    Summary

    A novel laser diode array velocimetry technique accurately measures flow velocity using multiple laser spots and signal frequency analysis. This method offers high precision, confirmed by rotating wire and wind-tunnel experiments.

    Area of Science:

    • Fluid dynamics
    • Optical measurement techniques

    Background:

    • Accurate flow velocity measurement is crucial in various scientific and engineering fields.
    • Existing velocimetry methods may have limitations in precision or applicability.

    Purpose of the Study:

    • To introduce and validate a new technique for measuring flow velocity: laser diode array velocimetry (LDAV).
    • To assess the accuracy and precision of LDAV through experimental validation.

    Main Methods:

    • LDAV generates multiple laser spots (≥4) with precise separation (20-100 µm) at the probe volume.
    • Particle signals passing through the probe volume are analyzed by a digital signal processor for frequency content.
    • Flow velocity is calculated by multiplying signal frequency with laser-to-laser spot separation.

    More Related Videos

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
    10:53

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

    Published on: March 12, 2019

    Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
    09:17

    Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

    Published on: April 23, 2018

    Related Experiment Videos

    Last Updated: Jul 7, 2026

    Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
    08:54

    Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

    Published on: February 13, 2018

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
    10:53

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

    Published on: March 12, 2019

    Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
    09:17

    Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

    Published on: April 23, 2018

    Main Results:

    • Experimental validation using rotating wire and wind-tunnel setups confirmed LDAV performance.
    • Uncertainties in processed LDAV signal frequency were less than 0.3%.
    • Uncertainties in beam-to-beam separation were less than +/-0.05%.

    Conclusions:

    • Laser diode array velocimetry is a highly accurate and precise method for flow velocity measurement.
    • The technique demonstrates excellent performance and reliability in experimental conditions.
    • LDAV offers a valuable advancement in fluid dynamics measurement capabilities.