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

General Characteristics of Pipe Flow I01:22

General Characteristics of Pipe Flow I

476
Pipe flow refers to the movement of fluids within fully enclosed conduits, typically cylindrical in shape, such as water pipes or hydraulic hoses. These conduits are designed to withstand high-pressure gradients that drive fluid movement, contrasting with open-channel flows, where gravity is the primary driving force. Rectangular conduits, like air conditioning and heating ducts, generally operate at lower pressures and are less suited for high-pressure applications.
The classification of fluid...
476
Laminar Flow: Problem Solving01:24

Laminar Flow: Problem Solving

67
Laminar flow occurs when a fluid moves smoothly in parallel layers with minimal mixing and turbulence. In fluid mechanics, ensuring laminar flow within a pipe is essential for precise control of flow characteristics, especially in engineering applications. The key factor in determining whether flow remains laminar is the Reynolds number, a dimensionless quantity that depends on the fluid's velocity, density, viscosity, and the pipe's diameter. A Reynolds number of 2100 or lower...
67
General Characteristics of Pipe Flow II01:24

General Characteristics of Pipe Flow II

453
When fluid enters a pipe, it first passes through the entrance region, where the velocity profile adjusts due to viscous effects. In this region, a boundary layer forms along the pipe walls and grows until it fully occupies the pipe's cross-section. Once the boundary layer merges, the flow becomes fully developed, with a steady velocity profile that remains consistent along the pipe's length.
The distance to reach a fully developed flow is called the entrance length and depends on the...
453
Single Pipe Systems01:24

Single Pipe Systems

61
In pipe flow analysis, problems are typically categorized into three types — Type I, Type II, and Type III — based on the known parameters and the desired outcome. Each type of problem addresses specific engineering requirements using fluid properties, pipe characteristics, and operational conditions.
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...
61
Laminar Flow01:27

Laminar Flow

381
Laminar flow represents a smooth, orderly fluid motion where particles move along parallel paths, resulting in minimal mixing between layers. Streamlined particle paths characterize this flow regime and occur under conditions where viscous forces dominate over inertial forces. The distinction between laminar, transitional, and turbulent flow is primarily determined by the Reynolds number, a dimensionless quantity calculated as:
381
Sieve Analysis and Grading Curves01:19

Sieve Analysis and Grading Curves

229
Sieve analysis is a method used to determine the particle size distribution of aggregate materials. This process involves the following steps:
229

You might also read

Related Articles

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

Sort by
Same author

Automated Tomographic Assessment of Structural Defects of Freeze-Dried Pharmaceuticals.

AAPS PharmSciTech·2024
Same author

TSS-ConvNet for electrical impedance tomography image reconstruction.

Physiological measurement·2024
Same author

Shear zones in granular mixtures of hard and soft particles with high and low friction.

Soft matter·2024
Same author

A device for studying fluid-induced cracks under mixed-mode loading conditions using x-ray tomography.

The Review of scientific instruments·2023
Same author

Packing structure of semiflexible rings.

Proceedings of the National Academy of Sciences of the United States of America·2020
Same author

Publisher Correction: Rotating robots move collectively and self-organize.

Nature communications·2018
Same journal

Exploring mechanisms for reversal of flow in tunicate hearts.

Chaos (Woodbury, N.Y.)·2026
Same journal

State estimation in spatiotemporal chaos via low-rank StatFEM.

Chaos (Woodbury, N.Y.)·2026
Same journal

Universal response functions in driven dissipative tunneling dynamics.

Chaos (Woodbury, N.Y.)·2026
Same journal

A network-based approach to characterize the dynamics of the coupling field of thermoacoustic oscillators in annular geometry.

Chaos (Woodbury, N.Y.)·2026
Same journal

Data-driven soliton manifold approximations for dark and bright waves: Some prototypical 1D case examples.

Chaos (Woodbury, N.Y.)·2026
Same journal

Gap junction architecture and synchronization clusters in the thalamic reticular nuclei.

Chaos (Woodbury, N.Y.)·2026
See all related articles

Related Experiment Video

Updated: May 11, 2025

Frugal Imaging Technique of Capillary Flow Through Three-Dimensional Polymeric Printing Powders
06:01

Frugal Imaging Technique of Capillary Flow Through Three-Dimensional Polymeric Printing Powders

Published on: October 4, 2022

1.2K

Particle size segregation in granular pipe flow.

Patric Müller1, Artem Panchenko1, Wing To Ku1

  • 1Institute for Multiscale Simulation, Friedrich-Alexander Universität Erlangen-Nürnberg, 91058 Erlangen, Germany.

Chaos (Woodbury, N.Y.)
|April 18, 2025
PubMed
Summary
This summary is machine-generated.

Adding surface roughness to pipes can reduce density waves in granular flow. However, this modification may cause particle size segregation in systems with multiple particle sizes. Researchers explored the conditions under which this segregation occurs.

More Related Videos

The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

8.4K
Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

8.6K

Related Experiment Videos

Last Updated: May 11, 2025

Frugal Imaging Technique of Capillary Flow Through Three-Dimensional Polymeric Printing Powders
06:01

Frugal Imaging Technique of Capillary Flow Through Three-Dimensional Polymeric Printing Powders

Published on: October 4, 2022

1.2K
The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

8.4K
Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

8.6K

Area of Science:

  • Physics of granular materials
  • Fluid dynamics
  • Particle science and engineering

Background:

  • Granular material flow in pipes exhibits density waves, causing intermittent solid fraction variations.
  • Texturing pipe inner walls has been previously shown to mitigate these density waves.

Purpose of the Study:

  • To investigate the effect of surface roughness on granular flow in pipes.
  • To determine if surface roughness leads to particle size segregation in bidisperse systems.
  • To characterize the parameter ranges associated with segregation.

Main Methods:

  • Utilized particle simulations to model granular flow through pipes with textured inner walls.
  • Analyzed the impact of surface roughness on particle distribution and segregation in bidisperse granular flows.

Main Results:

  • Surface roughness, while mitigating density waves, can induce particle size segregation as an unintended consequence.
  • Identified specific parameter ranges where this segregation phenomenon is observed in bidisperse systems.

Conclusions:

  • Surface texturing of pipes for flow control requires careful consideration of potential particle size segregation.
  • Understanding the parameter space for segregation is crucial for designing effective granular flow systems.