Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Eulerian and Lagrangian Flow Descriptions

Eulerian and Lagrangian Flow Descriptions

Fluid flow analysis is critical in many scientific and engineering disciplines, and two principal approaches are used to describe this flow: the Eulerian and Lagrangian methods. These methods offer different perspectives on monitoring and analyzing the motion of fluids, each with distinct advantages depending on the scenario.
The Eulerian method focuses on fixed points in space where fluid properties, such as velocity, pressure, and temperature, are observed as the fluid moves between these...

Drag

Drag

Drag is a resistive force opposing an object’s motion through a fluid, resulting from surface pressure and shear forces. It comprises two components: a perpendicular one from pressure and a tangential one from shear stress. Accurate drag calculations use pressure and wall shear stress distributions, often determined through Computational Fluid Dynamics (CFD) or wind tunnel testing. The drag coefficient, a dimensionless measure, depends on factors like shape, Reynolds number, Mach number, Froude...

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

Steady, Laminar Flow Between Parallel Plates

Steady, Laminar Flow Between Parallel Plates

Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.

General External Flow Characteristics

General External Flow Characteristics

The study of external flow is essential for creating structures and objects that interact efficiently and safely with moving fluids, such as air or water. When a body is immersed in a flowing fluid, it experiences two primary forces: drag, which opposes motion along the flow direction, and lift, which acts perpendicular to the flow. The shape, size, and orientation of the object influence these forces.Streamlined and Blunt Bodies in External FlowObjects in fluid flow are classified as...

Laminar and Turbulent Flow

Laminar and Turbulent Flow

Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the streamlines...

You might also read

Related Articles

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

Sort by

Same author

Individualized mRNA vaccines evoke durable T cell immunity in adjuvant TNBC.

Nature·2026

Same author

Australian Youth Self-Harm Atlas: spatial modelling and mapping of self-harm prevalence and related risk and protective factors to inform youth suicide prevention strategies.

Epidemiology and psychiatric sciences·2024

Same author

Infusion of Non-HLA-Matched Off-the-Shelf <i>Ex Vivo</i> Expanded Cord Blood Progenitors in Patients Undergoing Cord Blood Transplantation: Result of a Phase II Clinical Trial.

Frontiers in cell and developmental biology·2022

Same author

Mad River Valley Dental Association.

The Dental register·2021

Same author

Qiviut cortisol reflects hypothalamic-pituitary-adrenal axis activity in muskoxen (Ovibos moschatus).

General and comparative endocrinology·2021

Same author

Spinal Stenosis in Familial Transthyretin Amyloidosis.

Journal of neuromuscular diseases·2019

Search research articles

Related Experiment Video

Updated: Jun 8, 2026

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

Published on: March 5, 2014

Slow-flow measurements and fluid dynamics analysis using the Fresnel drag effect.

R T de Carvalho, J Blake

|October 12, 2010

Summary

A Sagnac interferometer measures optical phase shifts from the Fresnel drag effect in moving water. This system accurately detects low flow rates and measures velocity profiles and turbulence.

Area of Science:

Optics
Fluid Dynamics
Metrology

Background:

The Fresnel drag effect describes how light is affected by the motion of a medium.
Accurate measurement of fluid flow is crucial in various scientific and industrial applications.
Traditional flow meters can introduce significant pressure drops.

Purpose of the Study:

To develop and demonstrate a Sagnac interferometer system for measuring optical phase shifts induced by the Fresnel drag effect.
To utilize this system for precise detection of low volumetric flow rates in water.
To investigate the system's capability in measuring water velocity profiles and turbulence.

Main Methods:

A Sagnac interferometer was employed to detect optical phase shifts.
The system was calibrated and tested using flowing water.

More Related Videos

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Published on: July 20, 2017

Related Experiment Videos

Last Updated: Jun 8, 2026

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

Published on: March 5, 2014

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Published on: July 20, 2017

Volumetric flow rates, pressure drop, velocity profiles, and turbulence were measured.

Main Results:

The Sagnac interferometer successfully measured optical phase shifts due to the Fresnel drag effect.
The system demonstrated the ability to detect volumetric flow rates as low as 43 µL/min.
A minimal pressure drop was maintained across the measuring pipe.
Velocity profiles and turbulence characteristics of flowing water were successfully measured and analyzed.

Conclusions:

The Sagnac interferometer is a viable tool for measuring optical phase shifts related to the Fresnel drag effect.
The developed system offers high sensitivity for detecting low flow rates in fluids.
This technique provides a non-intrusive method for characterizing fluid dynamics, including velocity profiles and turbulence, with minimal impact on the flow itself.