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

Irrotational Flow01:28

Irrotational Flow

404
Irrotational flow is characterized by fluid motion where particles do not rotate around their axes, resulting in zero vorticity. For a flow to be irrotational, the curl of the velocity field must be zero. This imposes specific conditions on velocity gradients. For instance, to maintain zero rotation about the z-axis, the gradient condition:
404
Steady Flow of a Fluid Stream01:27

Steady Flow of a Fluid Stream

247
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...
247
Laminar Flow01:27

Laminar Flow

596
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:
596
Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

8.4K
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...
8.4K
Conservation of Mass in Moving, Nondeforming Control Volume01:14

Conservation of Mass in Moving, Nondeforming Control Volume

754
Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
754
Viscosity01:17

Viscosity

5.8K
When water is poured into a glass, it falls freely and quickly, whereas if honey or maple syrup is poured over a pancake, it flows slowly and sticks to the surface of the container. This difference in the flow of different kinds of liquids arises due to the fluid friction between the liquid layers and the liquid and the surrounding material. This property of fluids is called fluid viscosity. In this example, water has a lower viscosity than honey and maple syrup.
The SI unit of viscosity is...
5.8K

You might also read

Related Articles

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

Sort by
Same author

Inhibition of osteoarthritis progression with freshly thawed small umbilical cord-derived fast proliferating cells in a rat model.

Scientific reports·2026
Same author

Plasma Enabled Hierarchical Surface Reconstruction of Nanoengineered, Dendrite-Free Zn Metal for Durable Aqueous Zinc Ion Battery.

Small methods·2026
Same author

Harnessing yeasts for sustainable methanol valorization: Metabolic and fermentation engineering strategies.

New biotechnology·2026
Same author

Green solvent systems for anhydrous fabric cleaning: from prediction to performance.

Scientific reports·2026
Same author

Mixed exposure to lead, methylmercury, and cadmium aggravates spatial memory deficits via dopamine signaling pathways in the mouse hippocampus.

Frontiers in public health·2026
Same author

Plasma Enabled Synthesis of Dual Phase Alkali Metals (Li, Na, K) & Water Co-Intercalated V<sub>2</sub>O<sub>5</sub> 3D TMO Clusters for High Performing Aqueous Zinc Ion Battery.

Small (Weinheim an der Bergstrasse, Germany)·2026

Related Experiment Video

Updated: Jun 2, 2025

Quantifying Mixing using Magnetic Resonance Imaging
07:33

Quantifying Mixing using Magnetic Resonance Imaging

Published on: January 25, 2012

10.9K

Liquid flows induced in a rotating drum with different fill ratios.

Daeun Lee1, Jaebeen Lee1, Seok Min Choi2

  • 1Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Korea.

Scientific Reports
|January 14, 2025
PubMed
Summary

This study reveals that partially-filled rotating drums exhibit asymmetric liquid flow, unlike fully-filled drums. These findings are crucial for understanding fluid dynamics in rotating cylindrical tanks for engineering applications.

Keywords:
Fill ratioFlow structureFree surfaceParticle image velocimetryRotating drum

More Related Videos

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.5K
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.5K

Related Experiment Videos

Last Updated: Jun 2, 2025

Quantifying Mixing using Magnetic Resonance Imaging
07:33

Quantifying Mixing using Magnetic Resonance Imaging

Published on: January 25, 2012

10.9K
Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.5K
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.5K

Area of Science:

  • Fluid Dynamics
  • Experimental Physics
  • Engineering Applications

Background:

  • Rotating drums are common in industrial processes.
  • Understanding liquid behavior in partially-filled rotating drums is essential for process optimization.
  • Existing research often focuses on fully-filled or granular flows.

Purpose of the Study:

  • To experimentally investigate liquid flow structures in a horizontally aligned rotating drum.
  • To analyze the effects of varying fill ratios and rotational speeds on flow dynamics.
  • To compare liquid flow with granular flow in partially-filled drums.

Main Methods:

  • Utilized particle image velocimetry (PIV) to measure velocity fields.
  • Varied water height to control fill ratios.
  • Adjusted rotational speed of the drum.

Main Results:

  • Fully-filled drums (fill ratio 1.0) exhibit solid-body rotation.
  • Partially-filled drums show substantial asymmetric flow structures.
  • Asymmetry is driven by radial momentum diffusion, centrifugal acceleration, and gravitational flux.

Conclusions:

  • Partially-filled rotating drums develop complex, asymmetric flow patterns.
  • The study provides insights into free surface dynamics and fluctuating velocity fields.
  • Results offer valuable data for engineering applications involving partially-filled rotating drums.