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

Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

940
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.
940
Couette Flow01:22

Couette Flow

1.2K
Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
1.2K
Newtonian Fluid: Problem Solving01:18

Newtonian Fluid: Problem Solving

1.1K
Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
1.1K
Steady, Laminar Flow in Circular Tubes01:23

Steady, Laminar Flow in Circular Tubes

1.3K
Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...
1.3K
Steady Flow of a Fluid Stream01:27

Steady Flow of a Fluid Stream

820
Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
820
Typical Model Studies01:30

Typical Model Studies

667
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.
667

You might also read

Related Articles

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

Sort by
Same author

Entropic-dielectric interplay governs ion adsorption in inner electric double layers.

Science advances·2026
Same author

Using Sorbitol as Electrolyte Additive to Control Interfacial Environments in Electrochemical CO<sub>2</sub> Reduction on Silver.

ACS catalysis·2025
Same author

Polarization of disk electrodes in high-conductivity electrolyte solutions.

The Journal of chemical physics·2024
Same author

Nanoscale Meniscus Dynamics in Evaporating Thin Films: Insights from Molecular Dynamics Simulations.

Langmuir : the ACS journal of surfaces and colloids·2023
Same author

Real-time visualisation of ion exchange in molecularly confined spaces where electric double layers overlap.

Faraday discussions·2023
Same author

Changes in Electrical Capacitance of Cell Membrane Reflect Drug Partitioning-Induced Alterations in Lipid Bilayer.

Micromachines·2023

Related Experiment Video

Updated: Mar 12, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

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

Published on: August 27, 2013

18.1K

A phenomenological continuum model for force-driven nano-channel liquid flows.

Jafar Ghorbanian1, Alper T Celebi1, Ali Beskok1

  • 1Department of Mechanical Engineering, Southern Methodist University, Dallas, Texas 75205, USA.

The Journal of Chemical Physics
|November 17, 2016
PubMed
Summary

A new continuum model accurately predicts liquid flow in nano-channels using molecular dynamics simulations. This model simplifies complex fluid behavior, enabling precise flow rate predictions for various liquids and channel sizes.

More Related Videos

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions
08:41

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Published on: September 7, 2018

9.5K
Development of a Microfluidics-Based Approach for Investigating Microtubule Polymer Mechanics
06:03

Development of a Microfluidics-Based Approach for Investigating Microtubule Polymer Mechanics

Published on: May 30, 2025

906

Related Experiment Videos

Last Updated: Mar 12, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

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

Published on: August 27, 2013

18.1K
Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions
08:41

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Published on: September 7, 2018

9.5K
Development of a Microfluidics-Based Approach for Investigating Microtubule Polymer Mechanics
06:03

Development of a Microfluidics-Based Approach for Investigating Microtubule Polymer Mechanics

Published on: May 30, 2025

906

Area of Science:

  • Physics
  • Materials Science
  • Chemical Engineering

Background:

  • Confined fluid flow at the nanoscale exhibits unique behaviors due to surface interactions.
  • Molecular dynamics (MD) simulations provide detailed insights into these nanoscale phenomena.
  • Developing continuum models that capture nanoscale fluid dynamics is crucial for accurate predictions.

Purpose of the Study:

  • To develop a phenomenological continuum model for force-driven liquid flow in nano-channels.
  • To define effective channel height and density deficit parameters based on MD simulations.
  • To validate the model's predictive capabilities for various liquid-solid systems and thermodynamic conditions.

Main Methods:

  • Systematic molecular dynamics (MD) simulations of liquid argon in gold nano-channels.
  • Development of a phenomenological continuum model incorporating density layering effects.
  • Calibration of model parameters using a single MD simulation for a specific liquid-solid pair.
  • Verification of the model against MD results for different channel heights, thermodynamic states, and liquid-solid interactions.

Main Results:

  • The model accurately predicts velocity distribution, volumetric, and mass flow rates.
  • Observed constant slip-length and kinematic viscosity were incorporated into the model.
  • Successful verification for liquid argon in gold nano-channels across various conditions.
  • Demonstrated applicability to water flow in silica and gold nano-channels with distinct slip lengths (1.2 nm and 15.5 nm).
  • Excellent agreement for channel heights as small as 3 nm.

Conclusions:

  • The developed continuum model effectively captures nanoscale fluid dynamics in confined geometries.
  • The model provides accurate predictions for flow rates and velocity profiles.
  • The approach is versatile, applicable to different liquids, solid materials, and thermodynamic states.
  • This work offers a computationally efficient alternative to full MD simulations for certain nanoscale flow problems.