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Related Concept Videos

Bernoulli's Principle: Applications01:17

Bernoulli's Principle: Applications

6.1K
There are many devices and situations in which fluid flows at a constant height and so can be analyzed using Bernoulli's principle. These devices include, but are not limited to, entrainment devices and fluid flow measuring devices.
Entrainment devices use a high fluid speed to create low pressures and, thus, entrain one fluid into another. Some examples of these devices are given below:
6.1K
Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

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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,...
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Bernoulli's Equation: Problem Solving01:16

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A Venturi meter is essential for measuring fluid flow rates in pipelines. It utilizes the relationship between fluid velocity and pressure described by Bernoulli's equation. When installed in a sewage system, the Venturi meter accurately determines the wastewater flow rate by measuring pressure differences.
The first step is to compute the cross-sectional areas of the pipe and the Venturi throat to analyze the pressure difference indicated by the pressure gauge. Next, the continuity equation is...
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Bernoulli's Principle01:01

Bernoulli's Principle

11.6K
Bernoulli's equation incorporates how fluid pressure changes across a static, incompressible fluid by equating the kinetic energy contribution to zero. It is also helpful in analyzing horizontal flows in which the gravitational energy density is constant throughout. The latter equation is so useful that it is called Bernoulli's principle. According to Bernoulli's principle, the fluid pressure drops if the speed increases and vice versa.
Bernoulli's principle has several...
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Related Experiment Video

Updated: Jan 1, 2026

Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
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Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels

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Packaged microbubble resonator optofluidic flow rate sensor based on Bernoulli Effect.

Zhenmin Chen, Zhihe Guo, Xin Mu

    Optics Express
    |December 25, 2019
    PubMed
    Summary
    This summary is machine-generated.

    A new microbubble resonator flow sensor detects fluid pressure changes without structural modification. This innovative sensor achieves high flow rate sensitivity, offering a promising tool for fluid dynamics research.

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    Area of Science:

    • * Microfluidics and Sensor Technology
    • * Optical Measurement Techniques
    • * Fluid Dynamics

    Background:

    • * Microbubble resonators are sensitive to external environmental changes.
    • * Detecting fluid pressure variations is crucial for various microfluidic applications.
    • * Existing flow sensors may require complex structural modifications.

    Purpose of the Study:

    • * To propose and demonstrate a novel flow sensor utilizing a packaged microbubble resonator.
    • * To investigate the sensor's performance using both tunable and broadband light sources.
    • * To theoretically analyze fluid pressure variations based on the Bernoulli Effect.

    Main Methods:

    • * Fabricating and packaging a microbubble resonator.
    • * Implementing a flow system to introduce controlled fluid flow.
    • * Utilizing optical interrogation with tunable and broadband light sources to measure resonator response.
    • * Performing theoretical analysis of fluid pressure dynamics.

    Main Results:

    • * Experimental demonstration of a flow sensor based on dynamic fluid pressure changes.
    • * Achieved a flow rate sensitivity of up to 0.0196 pm / (µL/min).
    • * Presented sensing performance data obtained with different light sources.
    • * Provided theoretical analysis of pressure variations due to the Bernoulli Effect.

    Conclusions:

    • * The proposed microbubble resonator flow sensor operates without structural modifications.
    • * The sensor exhibits significant sensitivity to flow rate.
    • * The findings validate the potential of microbubble resonators for fluid flow sensing.